1
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Wu P, Zhang WT, Yang JX, Yu XY, Ni SF, Tan W, Shi F. Synthesis of Alkene Atropisomers with Multiple Stereogenic Elements via Catalytic Asymmetric Rearrangement of 3-Indolylmethanols. Angew Chem Int Ed Engl 2024; 63:e202410581. [PMID: 39039588 DOI: 10.1002/anie.202410581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/12/2024] [Accepted: 07/22/2024] [Indexed: 07/24/2024]
Abstract
Catalytic enantioselective preparation of alkene atropisomers with multiple stereogenic elements and discovery of their applications have become significant but challenging issues in the scientific community due to the unique structures of this class of atropisomers. We herein report the first catalytic atroposelective preparation of cyclopentenyl[b]indoles, a new kind of alkene atropisomers, with stereogenic point and axial chirality via an unusual rearrangement reaction of 3-indolylmethanols under asymmetric organocatalysis. Notably, this novel type of alkene atropisomers have promising applications in developing chiral ligands or organocatalysts, discovering antitumor drug candidates and fluorescence imaging materials. Moreover, the theoretical calculations have elucidated the possible reaction mechanism and the non-covalent interactions to control the enantioselectivity. This approach offers a new synthetic strategy for alkene atropisomers with multiple stereogenic elements, and represents the first catalytic enantioselective rearrangement reaction of 3-indolylmethanols, which will advance the chemistry of atropisomers and chiral indole chemistry.
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Affiliation(s)
- Ping Wu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Wen-Tao Zhang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Ji-Xiang Yang
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063, China
| | - Xian-Yang Yu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Shao-Fei Ni
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063, China
| | - Wei Tan
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Feng Shi
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
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2
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Campbell JW, Cotnam MJ, Annan FR, Hilborn JW, Thompson A. Synthesis of chiral systems featuring the pyrrole unit: a review. Chem Commun (Camb) 2024; 60:11385-11414. [PMID: 39292192 DOI: 10.1039/d4cc03601h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
Synthetic strategies towards pyrroles within chiral frameworks are summarised, focussing on reports published 2010-2023. The synthesis of pyrroles featuring substituents bearing chiral centres are summarised, as are those whereby pyrroles are located within axially chiral systems courtesy of restricted bond rotation.
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Affiliation(s)
- Jacob W Campbell
- Department of Chemistry, Dalhousie University, P. O. Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada.
| | - Michael J Cotnam
- Department of Chemistry, Dalhousie University, P. O. Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada.
| | - Francisca R Annan
- Department of Chemistry, Dalhousie University, P. O. Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada.
| | - James W Hilborn
- Department of Chemistry, Dalhousie University, P. O. Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada.
| | - Alison Thompson
- Department of Chemistry, Dalhousie University, P. O. Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada.
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3
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Jia L, Li B, Wang X, Zhao J, Qu J, Zhou Y. Construction of axially chiral 2-arylpyrroles using catalytic asymmetric Suzuki-Miyaura cross-coupling: an efficient approach to esaxerenone. Org Biomol Chem 2024. [PMID: 39177493 DOI: 10.1039/d4ob01174k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
A general and efficient method has been developed to access axially chiral 2-arylpyrroles using catalytic asymmetric Suzuki-Miyaura cross-coupling. A wide range of axially chiral arylpyrroles were obtained in high yields with good to excellent enantioselectivities. The key to success is the use of a combined catalytic system involving a palladium catalyst and chiral ferrocene diphosphine ligand for achieving effective enantiocontrol. More importantly, this axially chiral CF3-substituted 2-arylpyrrole serves as a key intermediate in the preparation of the anti-hypertensive and diabetic nephropathy drug esaxerenone. It was directly asymmetrically synthesized with high enantioselectivity (92% ee). Thus, a new strategy is provided for the catalytic asymmetric synthesis of esaxerenone.
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Affiliation(s)
- Ling Jia
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Bing Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Xi Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Jinfeng Zhao
- Instrumental Analysis Center, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
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4
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Yao C, Li DR, Xiang HM, Li SJ, Lu Y, Wang Z, Yin T, Wang J, Feng K, Zhu C, Xu H. Copper-catalysed asymmetric annulation of yne-allylic esters with amines to access axially chiral arylpyrroles. Nat Commun 2024; 15:6848. [PMID: 39127693 DOI: 10.1038/s41467-024-50896-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024] Open
Abstract
The construction of atropisomers with 1,2-diaxes, while maintaining high enantiocontrol, presents a significant challenge due to the dynamic nature of steric hindrance at ortho-aryl substituents. Although various catalytic asymmetric methods have been developed for accessing axially chiral arylpyrroles, the synthesis of axially chiral arylpyrroles with 1,2-diaxes in a catalytic asymmetric manner has remained rare. Herein, the authors report the synthesis of diverse axially chiral arylpyrroles with 1,2-diaxes, and C-C and C-N axes through copper-catalysed asymmetirc [4 + 1] annulation of yne-allylic esters with arylamines via a remote stereocontrol strategy. This approach provides facile access to a broad range of heterobiaryl atropisomers (67 examples) in excellent enantioselectivities, each bearing one or two C-C/C-N axes, demonstrating its versatility and efficiency. The utility of this methodology is further highlighted by the transformation of the product into chiral phosphine ligand, and chiral thioureas for the use in asymmetric catalysis.
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Affiliation(s)
- Chaochao Yao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Dan-Ran Li
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Hua-Ming Xiang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Si-Jia Li
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Yuepeng Lu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Zihao Wang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Tingrui Yin
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Jiaqiang Wang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Kongling Feng
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Cuiju Zhu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Hao Xu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China.
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5
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Ying M, Wang K, Yan W, Pu M, Lin L. Stable Axially Chiral Cyclohexylidenes from Catalytic Asymmetric Knoevenagel Condensation. Chemistry 2024; 30:e202401243. [PMID: 38711202 DOI: 10.1002/chem.202401243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/08/2024]
Abstract
Axially chiral cycloalkylidenes are interesting but less developed axially chiral molecules. Here, a bispidine-based chiral amine catalytic system was developed to promote efficiently the asymmetric Knoevenagel condensation of N-protected oxindoles and benzofuranones with 4-substituted cyclohexanones. A variety of alkylidenecycloalkanes with stable axial chirality were obtained in good yields and fairly good er (enantiomeric ratio). Based on the absolute configuration determination of product and DFT calculations, a possible mechanism of stereoselective induction was proposed.
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Affiliation(s)
- Meijia Ying
- Key Laboratory of Green Chemistry & Technology Ministry of Education, College of Chemistry, Sichuan University, P. R. China
| | - Kaixuan Wang
- Key Laboratory of Green Chemistry & Technology Ministry of Education, College of Chemistry, Sichuan University, P. R. China
| | - Wenjun Yan
- Key Laboratory of Green Chemistry & Technology Ministry of Education, College of Chemistry, Sichuan University, P. R. China
| | - Maoping Pu
- Key Laboratory of Green Chemistry & Technology Ministry of Education, College of Chemistry, Sichuan University, P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education, College of Chemistry, Sichuan University, P. R. China
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6
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Schmidt TA, Hutskalova V, Sparr C. Atroposelective catalysis. Nat Rev Chem 2024; 8:497-517. [PMID: 38890539 DOI: 10.1038/s41570-024-00618-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2024] [Indexed: 06/20/2024]
Abstract
Atropisomeric compounds-stereoisomers that arise from the restricted rotation about a single bond-have attracted widespread attention in recent years due to their immense potential for applications in a variety of fields, including medicinal chemistry, catalysis and molecular nanoscience. This increased interest led to the invention of new molecular motors, the incorporation of atropisomers into drug discovery programmes and a wide range of novel atroposelective reactions, including those that simultaneously control multiple stereogenic axes. A diverse set of synthetic methodologies, which can be grouped into desymmetrizations, (dynamic) kinetic resolutions, cross-coupling reactions and de novo ring formations, is available for the catalyst-controlled stereoselective synthesis of various atropisomer classes. In this Review, we generalize the concepts for the catalyst-controlled stereoselective synthesis of atropisomers within these categories with an emphasis on recent advancements and underdeveloped atropisomeric scaffolds beyond stereogenic C(sp2)-C(sp2) axes. We also discuss more complex systems with multiple stereogenic axes or higher-order stereogenicity.
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Affiliation(s)
- Tanno A Schmidt
- Department of Chemistry, University of Basel, Basel, Switzerland
| | | | - Christof Sparr
- Department of Chemistry, University of Basel, Basel, Switzerland.
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7
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Li X, Kong L, Yin S, Zhou H, Lin A, Yao H, Gao S. Palladium-Catalyzed Atroposelective Suzuki-Miyaura Coupling to Construct Axially Chiral Tetra-Substituted α-Boryl Styrenes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309706. [PMID: 38602437 PMCID: PMC11199998 DOI: 10.1002/advs.202309706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/05/2024] [Indexed: 04/12/2024]
Abstract
Palladium-catalyzed Suzuki-Miyaura (SM) coupling is a valuable method for forming C─C bonds, including those between aryl moieties. However, achieving atroposelective synthesis of axially chiral styrenes via SM coupling remains challenging. In this study, a palladium-catalyzed atroposelective Suzuki-Miyaura coupling between gem-diborylalkenes and aryl halides is presented. Using the monophosphine ligand Me-BI-DIME (L2), a range of axially chiral tetra-substituted acyclic styrenes with high yields and excellent enantioselectivities are successfully synthesized. Control experiments reveal that the gem-diboryl group significantly influences the product enantioselectivities and the coupling prefers to occur at sites with lower steric hindrance. Additionally, the alkenyl boronate group in the products proves versatile, allowing for various transformations while maintaining high optical purities.
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Affiliation(s)
- Xiaorui Li
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Lingyu Kong
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Shuxin Yin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Hengrui Zhou
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Shang Gao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
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8
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Liu J, Wei X, Wang Y, Qu J, Wang B. Asymmetric synthesis of atropisomeric arylpyrazoles via direct arylation of 5-aminopyrazoles with naphthoquinones. Org Biomol Chem 2024; 22:4254-4263. [PMID: 38738921 DOI: 10.1039/d4ob00514g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Construction of axially chiral arylpyrazoles represents an attractive challenge due to the relatively low rotational barrier of biaryl structures containing five-membered heterocycles. This work describes the catalytic asymmetric construction of axially chiral arylpyrazoles using 5-aminopyrazoles and naphthoquinone derivatives. The chiral axis could be formed through a central-to-axial chirality relay step of the chiral phosphoric acid-catalyzed arylation reaction, which features excellent yields and enantioselectivities with a broad substrate scope under mild reaction conditions.
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Affiliation(s)
- Jiamin Liu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Xingfu Wei
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Yue Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China.
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9
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Maclean I, Gallent E, Orozco O, Molina A, Rodríguez N, Adrio J, Carretero JC. Atroposelective Synthesis of Axially Chiral Naphthylpyrroles by a Catalytic Asymmetric 1,3-Dipolar Cycloaddition/Aromatization Sequence. Org Lett 2024; 26:922-927. [PMID: 38266629 PMCID: PMC10845160 DOI: 10.1021/acs.orglett.3c04261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/13/2024] [Accepted: 01/19/2024] [Indexed: 01/26/2024]
Abstract
A straightforward methodology for the enantioselective preparation of axially chiral 2-naphthylpyrroles has been developed. This protocol is based on a CuI/Fesulphos-catalyzed highly enantioselective 1,3-dipolar cycloaddition of an azomethine ylide followed by pyrrolidine alkylation and pyrrolidine to pyrrole oxidation. The mild conditions employed in the DDQ/blue light-mediated aromatization process facilitate an effective central-to-axial chirality transfer affording the corresponding pyrroles with high atroposelectivity.
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Affiliation(s)
- Ian Maclean
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Enrique Gallent
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Oscar Orozco
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Alba Molina
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Nuria Rodríguez
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem) and Center for
Innovation in Advanced Chemistry (ORFEO-CINQA), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Javier Adrio
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem) and Center for
Innovation in Advanced Chemistry (ORFEO-CINQA), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Juan C. Carretero
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem) and Center for
Innovation in Advanced Chemistry (ORFEO-CINQA), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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10
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Lee C, Lee S, Kim A, Kwon Y. Nitro-Enabled Atroposelective Dynamic Kinetic Resolution of 2-Arylindoles by Phase-Transfer Catalysis. Org Lett 2024; 26:681-686. [PMID: 38232328 DOI: 10.1021/acs.orglett.3c03933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
This study presents the atroposelective alkylation of 2-arylindoles catalyzed by a substituted cinchonium salt as a phase-transfer catalyst. Under the optimized reaction conditions, various substrates are employed to yield products with high enantioselectivity. The presence of an ortho-nitro group at the aromatic ring is essential for high atroposelectivity, because it facilitates favorable interactions between the catalyst and substrate. The origin of the enantioselectivity reveals favorable π-π interactions for both enantiomers and unfavorable steric strains for undesired enantiomers.
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Affiliation(s)
- Chanhee Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sujin Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ahreum Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yongseok Kwon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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11
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Yin S, Liu J, Weeks KN, Aponick A. Catalytic Enantioselective Synthesis of Axially Chiral Imidazoles by Cation-Directed Desymmetrization. J Am Chem Soc 2023; 145:28176-28183. [PMID: 38096490 DOI: 10.1021/jacs.3c10746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Axially chiral five-membered heterobiaryls synthesized by enantioselective catalysis typically feature large ortho-substituents or a heteroatom in the chiral axis to maintain a stable configuration. Herein we report a cation-directed catalytic enantioselective desymmetrization method that enables rapid access to axially chiral imidazoles with the basic nitrogen at the ortho position and efficiently integrates π-stacking moieties to ensure a stable axial configuration for further applications. The process is operationally simple, is highly enantioselective, and can be performed on the gram scale. The majority of the products are obtained in >90% ee, but interestingly even those with only moderate ee can readily be enriched to near optical purity by selective racemate crystallization. Together with a mild phosphine oxide reduction method, axially chiral imidazoles such as StackPhos and its derivatives are readily prepared in high yield and excellent enantioselectivity on the gram scale. The method also enables the preparation of new chiral non-phosphine-bearing imidazoles.
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Affiliation(s)
- Shengkang Yin
- Florida Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Ji Liu
- Florida Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Kendall N Weeks
- Florida Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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12
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Zou JY, Yang YY, Gu J, Liu F, Ye Z, Yi W, He Y. Asymmetric Allylic Substitution-Isomerization for the Modular Synthesis of Axially Chiral N-Vinylquinazolinones. Angew Chem Int Ed Engl 2023; 62:e202310320. [PMID: 37582683 DOI: 10.1002/anie.202310320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/12/2023] [Accepted: 08/15/2023] [Indexed: 08/17/2023]
Abstract
Axially chiral N-substituted quinazolinones are important bioactive molecules, which are presented in many synthetic drugs. However, most strategies toward their atroposelective synthesis are mainly limited to the axially chiral arylquinazolinone frameworks. The development of modular synthetic methods to access diverse quinazolinone-based atropisomers remains scarce and challenging. Herein, we report the regio- and atroposelective synthesis of axially chiral N-vinylquinazolinones via the strategy of asymmetric allylic substitution-isomerization. The catalysis system utilized both asymmetric transition-metal catalysis and organocatalysis to efficiently afford trisubstituted and tetrasubstituted N-vinylquinazolinone atropisomers, respectively. With the meticulous design of β-substituted allylic substrates, both Z- and E-tetrasubstituted axially chiral N-vinylquinazolinones were obtained in good yields and high enantioselectivities.
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Affiliation(s)
- Jia-Yu Zou
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Yu-Ying Yang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Jun Gu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Fei Liu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Zhiwen Ye
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Wenbin Yi
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Ying He
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
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13
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Dai L, Zhou X, Guo J, Dai X, Huang Q, Lu Y. Diastereo- and atroposelective synthesis of N-arylpyrroles enabled by light-induced phosphoric acid catalysis. Nat Commun 2023; 14:4813. [PMID: 37558716 PMCID: PMC10412603 DOI: 10.1038/s41467-023-40491-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 07/27/2023] [Indexed: 08/11/2023] Open
Abstract
The C-N axially chiral N-arylpyrrole motifs are privileged scaffolds in numerous biologically active molecules and natural products, as well as in chiral ligands/catalysts. Asymmetric synthesis of N-arylpyrroles, however, is still challenging, and the simultaneous creation of contiguous C-N axial and central chirality remains unknown. Herein, a diastereo- and atroposelective synthesis of N-arylpyrroles enabled by light-induced phosphoric acid catalysis has been developed. The key transformation is a one-pot, three-component oxo-diarylation reaction, which simultaneously creates a C-N axial chirality and a central quaternary stereogenic center. A broad range of unactivated alkynes were readily employed as a reaction partner in this transformation, and the N-arylpyrrole products are obtained in good yields, with excellent enantioselectivities and very good diastereoselectivities. Notably, the N-arylpyrrole skeletons represent interesting structural motifs that could be used as chiral ligands and catalysts in asymmetric catalysis.
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Affiliation(s)
- Lei Dai
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Xueting Zhou
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, Fujian, China
| | - Jiami Guo
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, Fujian, China
| | - Xuan Dai
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Qingqin Huang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, Fujian, China
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, Fujian, China.
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14
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Zhu X, Mi R, Yin J, Wang F, Li X. Rhodium-catalyzed atroposelective access to trisubstituted olefins via C-H bond olefination of diverse arenes. Chem Sci 2023; 14:7999-8005. [PMID: 37502336 PMCID: PMC10370552 DOI: 10.1039/d3sc02714g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/01/2023] [Indexed: 07/29/2023] Open
Abstract
The atroposelective synthesis of axially chiral acyclic olefins remains a daunting challenge due to their relatively lower racemization barriers, especially for trisubstituted ones. In this work, atroposelective C-H olefination has been realized for synthesis of open-chain trisubstituted olefins via C-H activation of two classes of (hetero)arenes in the coupling with sterically hindered alkynes. The employment of phenyl N-methoxycarbamates as arene reagents afforded phenol-tethered olefins, with the carbamate being a traceless directing group. The olefination of N-methoxy-2-indolylcarboxamides afforded the corresponding chiral olefin by circumventing the redox-neutral [4 + 2] annulation. The reactions proceeded with excellent Z/E selectivity, chemoselectivity, regioselectivity, and enantioselectivity in both hydroarylation systems.
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Affiliation(s)
- Xiaohan Zhu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Ruijie Mi
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Jie Yin
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Fen Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
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15
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Fu L, Chen X, Fan W, Chen P, Liu G. Copper-Catalyzed Asymmetric Functionalization of Vinyl Radicals for the Access to Vinylarene Atropisomers. J Am Chem Soc 2023. [PMID: 37300506 DOI: 10.1021/jacs.3c04498] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A novel asymmetric radical strategy for the straightforward synthesis of atropisomerically chiral vinyl arenes has been established herein, proceeding through copper-catalyzed atroposelective cyanation/azidation of aryl-substituted vinyl radicals. Critical to the success of the radical relay process is the atroposelective capture of the highly reactive vinyl radicals with chiral L*Cu(II) cyanide or azide species. Moreover, these axially chiral vinylarene products can be easily transformed into atropisomerically enriched amides and amines, enantiomerically enriched benzyl nitriles via an axis-to-center chirality transfer process, and an atropisomerically pure organocatalyst for the chemo-, diastereo-, and enantioselective (4 + 2) cyclization reaction.
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Affiliation(s)
- Liang Fu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xin Chen
- Chang-Kung Chuang Institute, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Wenzheng Fan
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Guosheng Liu
- Chang-Kung Chuang Institute, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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16
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Wu JH, Tan JP, Zheng JY, He J, Song Z, Su Z, Wang T. Towards Axially Chiral Pyrazole-Based Phosphorus Scaffolds by Dipeptide-Phosphonium Salt Catalysis. Angew Chem Int Ed Engl 2023; 62:e202215720. [PMID: 36694276 DOI: 10.1002/anie.202215720] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/26/2023]
Abstract
Given the comparatively lower rotational barriers, the catalytic asymmetric construction of axially chiral biaryl structures, especially those containing a five-membered heterocycle, still remains a challenge. Herein, we described a general and modular protocol to access atropisomeric arylpyrazole scaffolds containing a phosphorus unit by a dipeptide phosphonium salt catalyzed reaction involving an oxidative central-to-axial chirality conversion. This reaction features excellent yields and enantioselectivities, broad substrate scope, and a low catalyst loading, delivering axially chiral phosphine compounds.
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Affiliation(s)
- Jia-Hong Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jian-Ping Tan
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, 411104, P. R. China
| | - Jia-Yan Zheng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jiajia He
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zhenlei Song
- West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
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17
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Yao L, Gashaw Woldegiorgis A, Huang S, Wang Y, Lin X. Palladium-Catalyzed Directed Atroposelective C-H Iodination to Synthesize Axial Chiral Biaryl N-Oxides via Enantioselective Desymmetrization Strategy. Chemistry 2023; 29:e202203051. [PMID: 36263903 DOI: 10.1002/chem.202203051] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Indexed: 12/04/2022]
Abstract
The discovery of enantioselective desymmetrization reactions to provide practical synthesis of enantio-enriched atropisomeric biaryls is a challenging topic in the field of asymmetric catalysis. Herein, we report a highly enantioselective desymmetrization reaction for the synthesis of axially chiral biaryl N-oxides by atroposelective C-H iodination by using Pd(II) coordinated by N-benzoyl-l-phenylalanine as a chiral catalyst at room temperature. A broad range of products were obtained in high yields (up to 99 %) with excellent enantioselectivities (up to 98 % ee). The products could be synthesized in gram scale, one of which was proved to be a powerful organocatalyst in asymmetric allylation reaction. Mechanistic evidence as well as DFT calculations point towards the factors that lead to high reactivity and excellent enantiocontrol in this reaction.
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Affiliation(s)
- Linxi Yao
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Alemayehu Gashaw Woldegiorgis
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Shaoying Huang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yongtao Wang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Xufeng Lin
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
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18
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Peng X, Rahim A, Peng W, Jiang F, Gu Z, Wen S. Recent Progress in Cyclic Aryliodonium Chemistry: Syntheses and Applications. Chem Rev 2023; 123:1364-1416. [PMID: 36649301 PMCID: PMC9951228 DOI: 10.1021/acs.chemrev.2c00591] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Indexed: 01/18/2023]
Abstract
Hypervalent aryliodoumiums are intensively investigated as arylating agents. They are excellent surrogates to aryl halides, and moreover they exhibit better reactivity, which allows the corresponding arylation reactions to be performed under mild conditions. In the past decades, acyclic aryliodoniums are widely explored as arylation agents. However, the unmet need for acyclic aryliodoniums is the improvement of their notoriously low reaction economy because the coproduced aryl iodides during the arylation are often wasted. Cyclic aryliodoniums have their intrinsic advantage in terms of reaction economy, and they have started to receive considerable attention due to their valuable synthetic applications to initiate cascade reactions, which can enable the construction of complex structures, including polycycles with potential pharmaceutical and functional properties. Here, we are summarizing the recent advances made in the research field of cyclic aryliodoniums, including the nascent design of aryliodonium species and their synthetic applications. First, the general preparation of typical diphenyl iodoniums is described, followed by the construction of heterocyclic iodoniums and monoaryl iodoniums. Then, the initiated arylations coupled with subsequent domino reactions are summarized to construct polycycles. Meanwhile, the advances in cyclic aryliodoniums for building biaryls including axial atropisomers are discussed in a systematic manner. Finally, a very recent advance of cyclic aryliodoniums employed as halogen-bonding organocatalysts is described.
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Affiliation(s)
- Xiaopeng Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
| | - Abdur Rahim
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Weijie Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Feng Jiang
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Shijun Wen
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
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19
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Cai B, Cui Y, Zhou J, Wang YB, Yang L, Tan B, Wang JJ. Asymmetric Hydrophosphinylation of Alkynes: Facile Access to Axially Chiral Styrene-Phosphines. Angew Chem Int Ed Engl 2023; 62:e202215820. [PMID: 36424372 DOI: 10.1002/anie.202215820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/24/2022] [Accepted: 11/24/2022] [Indexed: 11/27/2022]
Abstract
A Cu/CPA co-catalytic system has been developed for achieving the direct hydrophosphinylation of alkynes with phosphine oxides in delivering novel axially chiral phosphorus-containing alkenes in high yields and excellent enantioselectivities (up to 99 % yield and 99 % ee). DFT calculations were performed to elucidate the reaction pathway and the origin of enantiocontrol. This streamlined and modular methodology establishes a new platform for the design and application of new axially chiral styrene-phosphine ligands.
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Affiliation(s)
- Baohua Cai
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yuan Cui
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jian Zhou
- Department of Chemistry, Hong Kong Baptist University, Hong Kong, China
| | - Yong-Bin Wang
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Limin Yang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Bin Tan
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jun Joelle Wang
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China.,Department of Chemistry, Hong Kong Baptist University, Hong Kong, China
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20
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Yan Y, Li M, Shi Q, Huang M, Li W, Cao L, Zhang X. Atropoenantioselective Arylation of 5‐Amino‐Isothiazoles with Methyl
p
‐Quinone Carboxylate. ASIAN J ORG CHEM 2023. [DOI: 10.1002/ajoc.202200578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yingkun Yan
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Min Li
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Quan Shi
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
| | - Min Huang
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wenzhe Li
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Lianyi Cao
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xiaomei Zhang
- Department of Chemistry Xihua University Chengdu 610039 P. R. China
- Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 P. R. China
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21
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Xiang Alvin Tan C, Li R, Zhang F, Dai L, Ullah N, Lu Y. Synthesis of Axially Chiral CF
3
‐Substituted 2‐Arylpyrroles by Sequential Phosphine‐Catalyzed Asymmetric [3+2] Annulation and Oxidative Central‐to‐Axial Chirality Transfer. Angew Chem Int Ed Engl 2022; 61:e202209494. [DOI: 10.1002/anie.202209494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Indexed: 11/16/2022]
Affiliation(s)
- Chuan Xiang Alvin Tan
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
- Integrative Sciences & Engineering Programme (ISEP) National University of Singapore 28 Medical Drive Singapore 117456 Singapore
| | - Rui Li
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City, Fuzhou Fujian 350207 China
| | - Fuhao Zhang
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Lei Dai
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Nisar Ullah
- Chemistry Department King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
| | - Yixin Lu
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
- Integrative Sciences & Engineering Programme (ISEP) National University of Singapore 28 Medical Drive Singapore 117456 Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City, Fuzhou Fujian 350207 China
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22
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Cheng JK, Xiang SH, Tan B. Organocatalytic Enantioselective Synthesis of Axially Chiral Molecules: Development of Strategies and Skeletons. Acc Chem Res 2022; 55:2920-2937. [PMID: 36177502 DOI: 10.1021/acs.accounts.2c00509] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The growing importance of axially chiral architectures in different scientific domains has unveiled shortcomings in terms of efficient synthetic access and skeletal variety. This account describes our strategies in answering these challenges within the organocatalytic context where the emergence of bifunctional catalysts such as chiral phosphoric acids (CPAs) has proven invaluable in controlling the sense of axial chirality. The wide occurrence of bi(hetero)aryl skeletons in privileged structures constitutes a strong motivation to devise more effective arylation methods. Our design revolves around modulating the intrinsic nucleophilicity of aromatic amines and alcohols. The first approach involves the design of an electron-withdrawing activating group which could associate with the catalyst for reactivity enhancement and selectivity control. The resonance of arenes offers the unique mechanistic possibility to select between activating sites. C2-Azo- and nitroso-substituted naphthalenes undergo atroposelective ortho C- or N-arylation with (hetero)aromatic nucleophiles. For monocyclic benzenes, programmable charge localization leads to regioselective activation by catalytic control alone or aided by substrate design. For instance, selective addition to nitroso nitrogen enables successive annulation initiated by the amine to yield axially chiral N-arylbenzimidazoles. In a biomimetic manner, a finely tuned catalyst could direct a para-selective nucleophilic approach in the atroposelective arylation of azobenzenes. The second strategy employs electrophilic arene precursors for arylation which occurs via rearomatization with central-to-axial chirality transfer. This enabled the arylation of (imino)quinones with indoles to access phenylindole atropisomers. By adapting this chemistry with an additional oxidation event to liberate the carbonyl functionalities, aryl-o-naphthoquinone and aryl-p-quinone atropisomers were attained. Along with the development of new arylation strategies, deriving new axially chiral structures has been another consistent theme of our research program. The atroposelective functionalization of alkynes provides broad entry to atropisomeric alkenes. The monofunctionalization of alkynes through the interception of an electrophilic vinylidene-quinone-methide (VQM) intermediate with 2-naphthols yielded the new EBINOL scaffolds. By designing an internal directing group, the atroposelective dihalogenation of alkynes was realized using abundant alkali halides despite their weak nucleophilicities and poor solubilities. The atroposelective N-alkylation of alkenes was pursued to prepare multifunctionalized alkene atropisomers that could be converted into 2-arylpyrroles with chirality transfer. The synthesis of B-aryl-1,2-azaborines containing a C-B chiral axis was accomplished where the CPA catalyst effects the desymmetrization and defines the configuration of the distal C-B bond. Inspired by the axially chiral scaffold of allenes, we leveraged the developed arene activation strategy to achieve para-addition and dearomatization of judiciously designed azobenzenes, which led to structurally novel cyclohexadienylidene-based hydrazones. To complement these structures, axially chiral cyclohexadienyl oxime ethers were also attained through CPA-catalyzed condensation between hydroxylamines and spiro[4.5]trienones.
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23
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Han T, Zhang Z, Wang M, Xu L, Mei G. The Rational Design and Atroposelective Synthesis of Axially Chiral C2‐Arylpyrrole‐Derived Amino Alcohols. Angew Chem Int Ed Engl 2022; 61:e202207517. [DOI: 10.1002/anie.202207517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Tian‐Jiao Han
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Zheng‐Xu Zhang
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 Shandong China
| | - Min‐Can Wang
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
| | - Li‐Ping Xu
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo 255000 Shandong China
| | - Guang‐Jian Mei
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
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24
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Han TJ, Zhang ZX, Wang MC, Xu LP, Mei GJ. The Rational Design and Atroposelective Synthesis of Axially Chiral C2‐Arylpyrrole‐Derived Amino Alcohols. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Zheng-Xu Zhang
- Shandong University of Technology College of Chemistry CHINA
| | | | - Li-Ping Xu
- Shandong University of Technology College of Chemistry CHINA
| | - Guang-Jian Mei
- Zhengzhou University Chemistry Zhengzhou 450001 450001 Zhengzhou CHINA
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25
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Xu Q, Zhang H, Ge FB, Wang XM, Zhang P, Lu CJ, Liu RR. Cu(I)-Catalyzed Asymmetric Arylation of Pyrroles with Diaryliodonium Salts toward the Synthesis of N-N Atropisomers. Org Lett 2022; 24:3138-3143. [PMID: 35452582 DOI: 10.1021/acs.orglett.2c00812] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report herein that copper(I) catalysis using a bis(phosphine) dioxide ligand can catalyze the desymmetric C-H arylation of prochiral bipyrroles. More than 50 nitrogen-nitrogen atropisomers were achieved in good to excellent yields with excellent enantioselectivities (≤97% yield, ≤98% ee). The reaction proceeds under mild conditions with good functional group compatibility on arenes and diaryliodonium salts. Moreover, this principle enables iterative arylation of the bipyrroles to enantioselectively arylate different positions during the catalysis of copper.
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Affiliation(s)
- Qi Xu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Huan Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Fang-Bei Ge
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Xiao-Mei Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Peng Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China
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26
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Wang Y, Yang Y, Xu S, Huang A, Chen L, Xie Y, Liu P, Hong L, Li G. Organocatalytic enantioselective construction of axially chiral (1 H)-isochromen-1-imines. Org Biomol Chem 2022; 20:3277-3282. [PMID: 35373230 DOI: 10.1039/d2ob00379a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterocycloalkenyl atropisomers, derived from biaryl atropisomers and axially chiral styrenes, have emerged as a new class of nonbiaryl C-C atropisomers due to the benefit in improving the pharmacological activity and structural diversity. This paper proposes an intramolecular annulation strategy for constructing the heterocycloalkenyl atropisomers (1H)-isochromen-1-imines by organocatalysis. Various heterocycloalkenyl atropisomers (1H)-isochromen-1-imines were prepared in good to excellent yields with excellent enantioselectivity (up to 98% ee), and could be easily converted to atropisomeric lactones isocoumarins.
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Affiliation(s)
- Ying Wang
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, Shenzhen 518060, China.
| | - Yang Yang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Shiyu Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Aima Huang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Lu Chen
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, Shenzhen 518060, China.
| | - Yubao Xie
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, Shenzhen 518060, China.
| | - Pengyutian Liu
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, Shenzhen 518060, China.
| | - Liang Hong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Guofeng Li
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, Shenzhen 518060, China.
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27
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Guo WT, Zhu BH, Chen Y, Yang J, Qian PC, Deng C, Ye LW, Li L. Enantioselective Rh-Catalyzed Azide-Internal-Alkyne Cycloaddition for the Construction of Axially Chiral 1,2,3-Triazoles. J Am Chem Soc 2022; 144:6981-6991. [PMID: 35394289 DOI: 10.1021/jacs.2c01985] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Significant advances have been achieved for the construction of chiral skeletons containing 1,2,3-triazoles via transition-metal-catalyzed asymmetric azide-alkyne cycloaddition; however, most of them have been limited to terminal alkynes in the synthesis of central chirality via desymmetrization and dynamic/dynamic kinetic resolution. Enantioselective transition-metal-catalyzed azide-internal-alkyne cycloaddition is extremely limited. Moreover, the construction of a challenging five-membered (hetero)biaryl axially chiral molecule via transition-metal-catalyzed asymmetric azide-internal-alkyne cycloaddition is still underexplored. Herein, we first report an atroposelective and atom-economical synthesis of axially chiral 1,4,5-trisubstituted 1,2,3-triazoles, directly acting as core chiral units of challenging five-membered atropisomers, via the enantioselective Rh-catalyzed azide-alkyne cycloaddition (E-RhAAC) of internal alkynes and azides. The reaction demonstrates excellent functional group tolerance, forging a variety of C-C axially chiral 1,2,3-triazoles under mild conditions with moderate to excellent yields (up to 99% yield) and generally high to excellent enantioselectivities (up to 99% ee) along with specific regiocontrol. The origin of regio- and enantioselectivity control is disclosed by density functional theory (DFT) calculations, providing new guidance for the facile construction of axially chiral compounds.
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Affiliation(s)
- Wen-Ting Guo
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Bo-Han Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jian Yang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Peng-Cheng Qian
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Long Li
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.,State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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28
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Xu S, Huang A, Yang Y, Wang Y, Zhang M, Sun Z, Zhao M, Wei Y, Li G, Hong L. Organocatalytic Enantioselective Construction of Spiroketal Lactones Bearing Axial and Central Chirality via an Asymmetric Domino Reaction. Org Lett 2022; 24:2978-2982. [PMID: 35380447 DOI: 10.1021/acs.orglett.2c00845] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The catalytic asymmetric synthesis of chiral compounds with multiple stereogenic elements via a single catalytic process is challenging. This paper proposes a domino asymmetric electrophilic halocyclization strategy for constructing heterocycloalkenyl atropisomeric spiroketal lactones. A single catalyst was utilized to realize two independent stereodetermining steps. Various spiroketal lactones containing both chiral axes and chiral centers were prepared in excellent yields with excellent enantioselectivity and diastereoselective (up to 99% ee and >20:1 dr).
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Affiliation(s)
- Shiyu Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Aima Huang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Yang Yang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Ying Wang
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Ming Zhang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Zhihui Sun
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Man Zhao
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Yuanlin Wei
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Guofeng Li
- School of Pharmaceutical Sciences, Shenzhen University Health Science Centre, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Liang Hong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
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29
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Dai DT, Yang MW, Chen ZY, Wang ZL, Xu YH. Chelation-Controlled Stereospecific Cross-Coupling Reaction between Alkenes for Atroposelective Synthesis of Axially Chiral Conjugated Dienes. Org Lett 2022; 24:1979-1984. [DOI: 10.1021/acs.orglett.2c00386] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Dong-Ting Dai
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Meng-Wei Yang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhi-Yuan Chen
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zi-Lu Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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30
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Liu S, Chen Z, Chen J, Ni S, Zhang Y, Shi F. Rational Design of Axially Chiral Styrene‐Based Organocatalysts and Their Application in Catalytic Asymmetric (2+4) Cyclizations. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Si‐Jia Liu
- School of Chemistry and Materials Science Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province Jiangsu Normal University Xuzhou 221116 China
| | - Zhi‐Han Chen
- School of Chemistry and Materials Science Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province Jiangsu Normal University Xuzhou 221116 China
| | - Jia‐Yi Chen
- Department of Chemistry Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Shantou 515063 China
| | - Shao‐Fei Ni
- Department of Chemistry Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Shantou 515063 China
| | - Yu‐Chen Zhang
- School of Chemistry and Materials Science Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province Jiangsu Normal University Xuzhou 221116 China
| | - Feng Shi
- School of Chemistry and Materials Science Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province Jiangsu Normal University Xuzhou 221116 China
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31
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Yan JL, Maiti R, Ren SC, Tian W, Li T, Xu J, Mondal B, Jin Z, Chi YR. Carbene-catalyzed atroposelective synthesis of axially chiral styrenes. Nat Commun 2022; 13:84. [PMID: 35013298 PMCID: PMC8748895 DOI: 10.1038/s41467-021-27771-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/14/2021] [Indexed: 12/17/2022] Open
Abstract
Axially chiral styrenes bearing a chiral axis between a sterically non-congested acyclic alkene and an aryl ring are difficult to prepare due to low rotational barrier of the axis. Disclosed here is an N-heterocyclic carbene (NHC) catalytic asymmetric solution to this problem. Our reaction involves ynals, sulfinic acids, and phenols as the substrates with an NHC as the catalyst. Key steps involve selective 1,4-addition of sulfinic anion to acetylenic acylazolium intermediate and sequential E-selective protonation to set up the chiral axis. Our reaction affords axially chiral styrenes bearing a chiral axis as the product with up to > 99:1 e.r., > 20:1 E/Z selectivity, and excellent yields. The sulfone and carboxylic ester moieties in our styrene products are common moieties in bioactive molecules and asymmetric catalysis.
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Affiliation(s)
- Jia-Lei Yan
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Rakesh Maiti
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Shi-Chao Ren
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Weiyi Tian
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
| | - Tingting Li
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Jun Xu
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Bivas Mondal
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China.
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32
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Shao YD, Feng JS, Han DD, Pan KH, Zhang L, Wang YF, Ma ZH, Wang PR, Yin M, Cheng DJ. Construction of axially chiral styrene-type allylamines via chiral phosphoric acid-catalyzed asymmetric reductive amination. Org Chem Front 2022. [DOI: 10.1039/d1qo01672e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The first enantioselective synthesis of axially chiral styrene-type allylamines through chiral phosphoric acid mediated atroposelective reductive amination of 1-enal substituted 2-naphthols is achieved.
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Affiliation(s)
- You-Dong Shao
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Jin-Shuo Feng
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Dan-Dan Han
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Kang-Hui Pan
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Ling Zhang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Yi-Fan Wang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Zhong-Hui Ma
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Pei-Ru Wang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Mingjing Yin
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Dao-Juan Cheng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
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33
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Pan M, Shao YB, Zhao Q, Li X. Asymmetric Synthesis of N-N Axially Chiral Compounds by Phase-Transfer-Catalyzed Alkylations. Org Lett 2021; 24:374-378. [PMID: 34928616 DOI: 10.1021/acs.orglett.1c04028] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
N-N axially chiral skeletons are significant structural motifs in natural products, pharmaceuticals, and functional materials. Herein we disclose a method for the asymmetric synthesis of N-N axially chiral compounds by phase-transfer catalysis. A wide range of N-N axially chiral quinazolinone derivatives were prepared in high yields with excellent stereoselectivities. Furthermore, the synthetic utility of the protocol was proved by large-scale reaction and transformation of the product. Density functional theory calculations provide insight into the mechanism.
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Affiliation(s)
- Ming Pan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Ying-Bo Shao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Qun Zhao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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34
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Liu SJ, Chen ZH, Chen JY, Ni SF, Zhang YC, Shi F. Rational Design of Axially Chiral Styrene-Based Organocatalysts and Their Application in Catalytic Asymmetric (2+4) Cyclizations. Angew Chem Int Ed Engl 2021; 61:e202112226. [PMID: 34846087 DOI: 10.1002/anie.202112226] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Indexed: 12/13/2022]
Abstract
A new class of axially chiral styrene-based thiourea tertiary amine catalysts, which have unique characteristics such as an efficient synthetic route, multiple chiral elements, and multiple activating groups, has been rationally designed. These new chiral catalysts have proven to be efficient organocatalysts, enabling the chemo-, diastereo-, and enantioselective (2+4) cyclization of 2-benzothiazolimines with homophthalic anhydrides in good yields (up to 96 %) with excellent stereoselectivities (all >95:5 dr, up to 98 % ee). More importantly, theoretical calculations elucidated the important role of an axially chiral styrene moiety in controlling both the reactivity and enantioselectivity. This work not only represents the first design of styrene-based chiral thiourea tertiary amine catalysts and the first catalytic asymmetric (2+4) cyclization of 2-benzothiazolimines, but also gives an in-depth understanding of axially chiral styrene-based organocatalysts.
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Affiliation(s)
- Si-Jia Liu
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
| | - Zhi-Han Chen
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
| | - Jia-Yi Chen
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063, China
| | - Shao-Fei Ni
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063, China
| | - Yu-Chen Zhang
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
| | - Feng Shi
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
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35
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Mei GJ, Wong JJ, Zheng W, Nangia AA, Houk K, Lu Y. Rational design and atroposelective synthesis of N–N axially chiral compounds. Chem 2021. [DOI: 10.1016/j.chempr.2021.07.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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36
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He X, Wang C, Wen Y, Wang Z, Qian S. Recent Advances in Catalytic Atroposelective Construction of Pentatomic Heterobiaryl Scaffolds. ChemCatChem 2021. [DOI: 10.1002/cctc.202100539] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao‐Long He
- School of Food and Bioengineering Xihua University Chengdu 610039 P. R. China
| | - Cheng Wang
- School of Food and Bioengineering Xihua University Chengdu 610039 P. R. China
| | - You‐Wu Wen
- School of Food and Bioengineering Xihua University Chengdu 610039 P. R. China
| | - Zhouyu Wang
- School of Science Xihua University Chengdu 610039 P. R. China
| | - Shan Qian
- School of Food and Bioengineering Xihua University Chengdu 610039 P. R. China
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37
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Jin L, Zhang P, Li Y, Yu X, Shi BF. Atroposelective Synthesis of Conjugated Diene-Based Axially Chiral Styrenes via Pd(II)-Catalyzed Thioether-Directed Alkenyl C-H Olefination. J Am Chem Soc 2021; 143:12335-12344. [PMID: 34340309 DOI: 10.1021/jacs.1c06236] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The efficient stereoselective synthesis of conjugated dienes, especially those with axial chirality, remains a great challenge. Herein, we report the highly atroposelective synthesis of axially chiral styrenes with a conjugated 1,3-diene scaffold via a Pd(II)-catalyzed thioether-directed alkenyl C-H olefination strategy. This strategy features easy operation, mild reaction conditions, high functional group tolerance (69 examples), complete Z-selectivity, and excellent enantioselectivities (up to 99% ee). Notably, the highly enantioselective synthesis of atropisomers with two stereogenic axes were also achieved using this strategy (up to 99% ee and 97:3 dr). Moreover, the reaction could be scaled up, and the resulting axially chiral styrenes could be easily oxidized into chiral sulfoxide derivatives with high diastereoselectivities, which showed great promise as a new type of sulfur-olefin ligand.
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Affiliation(s)
- Liang Jin
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Peng Zhang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ya Li
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xin Yu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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38
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39
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Zhang B, Zhou P, Xu H, Huang J, Sun Y, Liu D, Yu F. Copper(II)‐Mediated Intermolecular Radical [3+2]‐Annulation of
N
,
N
‐Dimethyl Enaminones: Direct Access to 5‐Acyl‐3‐Furancarboxaldehydes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100633] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Biao Zhang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Pan Zhou
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Hui Xu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Jiuzhong Huang
- School of Pharmacy Gannan Medical University Ganzhou 341000 People's Republic of China
| | - Yulin Sun
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Donghan Liu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Fuchao Yu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
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40
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Wang J, Qi X, Min XL, Yi W, Liu P, He Y. Tandem Iridium Catalysis as a General Strategy for Atroposelective Construction of Axially Chiral Styrenes. J Am Chem Soc 2021; 143:10686-10694. [PMID: 34228930 DOI: 10.1021/jacs.1c04400] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Axially chiral styrenes are of great interest since they may serve as a class of novel chiral ligands in asymmetric synthesis. However, only recently have strategies been developed for their enantioselective preparation. Thus, the development of novel and efficient methodologies is highly desirable. Herein, we reported the first tandem iridium catalysis as a general strategy for the synthesis of axially chiral styrenes enabled by Asymmetric Allylic Substitution-Isomerization (AASI) using cinnamyl carbonate analogues as electrophiles and naphthols as nucleophiles. In this approach, axially chiral styrenes were generated through two independent iridium-catalytic cycles: iridium-catalyzed asymmetric allylic substitution and in situ isomerization via stereospecific 1,3-hydride transfer catalyzed by the same iridium catalyst. Both experimental and computational studies demonstrated that the isomerization proceeded by iridium-catalyzed benzylic C-H bond oxidative addition, followed by terminal C-H reductive elimination. Amid the central-to-axial chirality transfer, the hydroxyl of naphthol plays a crucial role in ensuring the stereospecificity by coordinating with the Ir(I) center. The process accommodated broad functional group compatibility. The products were generated in excellent yields with excellent to high enantioselectivities, which could be transformed to various axially chiral molecules.
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Affiliation(s)
- Jie Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Xiaotian Qi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Xiao-Long Min
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Wenbin Yi
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Ying He
- School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
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41
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Da B, Xiang S, Li S, Tan B. Chiral Phosphoric Acid Catalyzed Asymmetric Synthesis of Axially Chiral Compounds
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000751] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Bing‐Chao Da
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
| | - Shao‐Hua Xiang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
| | - Shaoyu Li
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
| | - Bin Tan
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
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42
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Borah B, Dwivedi KD, Chowhan LR. Recent approaches in the organocatalytic synthesis of pyrroles. RSC Adv 2021; 11:13585-13601. [PMID: 35423869 PMCID: PMC8697526 DOI: 10.1039/d1ra01690c] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 03/24/2021] [Indexed: 12/20/2022] Open
Abstract
Organocatalysis has emerged as one of the most important tools for the synthesis of diverse structural scaffolds, and has become one of the most important hot topics of current research. Construction of the pyrrole ring has gained much attention from the last few decades due to its remarkable biological activities, pharmaceutical application, intermediate in the synthesis of many natural products, and material science application. With access to these 5-membered aza heterocycles, organocatalytic approaches have provided a new alternative from the perspective of synthetic efficiency, as well as from the green chemistry point of view, and a vast array of synthetic procedures has been developed. Enlightened by the significance of this growing research area, we aim to describe the recent organocatalytic approaches developed for the construction of pyrroles, and organized them based on substrates employed.
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Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar 382030 India
| | - Kartikey Dhar Dwivedi
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar 382030 India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar 382030 India
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Cheng JK, Xiang SH, Li S, Ye L, Tan B. Recent Advances in Catalytic Asymmetric Construction of Atropisomers. Chem Rev 2021; 121:4805-4902. [PMID: 33775097 DOI: 10.1021/acs.chemrev.0c01306] [Citation(s) in RCA: 388] [Impact Index Per Article: 129.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Atropisomerism is a stereochemical behavior portrayed by three-dimensional molecules that bear rotationally restricted σ bond. Akin to the well-represented point-chiral molecules, atropisomerically chiral compounds are finding increasing utilities in many disciplines where molecular asymmetry is influential. This provides steady demand on atroposelective synthesis, where numerous synthetic pursuits have been rewarded with conceptually novel and streamlined methods while expanding the structural diversity of atropisomers. This review summarizes key achievements in stereoselective preparation of biaryl, heterobiaryl, and nonbiaryl atropisomers documented between 2015 and 2020. Emphasis is placed on the synthetic strategies for each structural class, while examples are cited to illustrate the potential applications of the accessed atropochiral targets.
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Affiliation(s)
- Jun Kee Cheng
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shao-Hua Xiang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shaoyu Li
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Liu Ye
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Tan
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
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Abstract
AbstractAtropisomeric styrenes are a class of optically active compounds, the chirality of which results from restricted rotation of the C(vinyl)–C(aryl) single bond. In comparison with biaryl atropisomers, the less rigid skeleton of styrenes usually leads them to have lower rotational barriers. Although it has been overlooked for a long time, scientists have paid attention to this class of unique molecules in recent years and have developed many methods for the preparation of optically active atropisomeric styrenes. In this article, we review the development of the concept of atropisomeric styrenes, along with their isolation, asymmetric synthesis, and synthetic applications.1 Introduction2 The Concept of Styrene Atropisomerism3 Early Research: Separation of Optically Active Styrenes4 Synthesis of Optically Active Styrenes5 Stability of the Chirality of Atropisomeric Styrenes6 Outlook
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Affiliation(s)
- Zhenhua Gu
- Department of Chemistry and Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
- Ocean College, Minjiang University
| | - Jia Feng
- Department of Chemistry and Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
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Zhang L, Shen J, Wu S, Zhong G, Wang Y, Tan B. Design and Atroposelective Construction of IAN analogues by Organocatalytic Asymmetric Heteroannulation of Alkynes. Angew Chem Int Ed Engl 2020; 59:23077-23082. [DOI: 10.1002/anie.202010598] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 08/27/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Lei Zhang
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Jiahua Shen
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - San Wu
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Guofu Zhong
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - Yong‐Bin Wang
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Bin Tan
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
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Zhang L, Shen J, Wu S, Zhong G, Wang Y, Tan B. Design and Atroposelective Construction of IAN analogues by Organocatalytic Asymmetric Heteroannulation of Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010598] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Lei Zhang
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Jiahua Shen
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - San Wu
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Guofu Zhong
- College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - Yong‐Bin Wang
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Bin Tan
- Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
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Corti V, Bertuzzi G. Organocatalytic Asymmetric Methodologies towards the Synthesis of Atropisomeric N-Heterocycles. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707814] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A perspective on the literature dealing with the organocatalytic asymmetric preparation of axially chiral N-heterocycles is provided. A particular focus is devoted to rationalize the synthetic strategies employed in each case. Moreover, specific classes of organocatalysts are shown to stand out as privileged motives for the stereoselective preparation of such synthetically challenging molecular architectures. Finally, an overview of the main trends in the field is given.1 Introduction2 Five-Membered Rings2.1 Arylation2.2 Dynamic Kinetic Resolution2.3 Ring Construction2.4 Central-to-Axial Chirality Conversion and Chirality Transfer2.5 Desymmetrization3 Six-Membered Rings3.1 Desymmetrization3.2 (Dynamic) Kinetic Resolution3.3 Ring Construction3.4 Central-to-Axial Chirality Conversion4 Conclusion
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Wang Y, Hu B, Zhang Q, Zhao S, Zhao Y, Zhang B, Yu F. Selectfluor-triggered fluorination/cyclization of o-hydroxyarylenaminones: A facile access to 3-fluoro-chromones. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820923084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A fast and efficient Selectfluor-triggered fluorination/cyclization reaction of o-hydroxyarylenaminones has been successfully developed. The reaction successfully provides an expedient method for the synthesis of 3-fluoro-chromones promoted by potassium carbonate, which shows readily available starting materials and is easy to operate. In addition, a plausible mechanism of this tandem cyclization reaction was proposed where 4 H-chromen-4-one, 2-(dimethylamino)-3,3-difluorochroman-4-one, and 3,3-difluoro-2-hydroxychroman-4-one were not found to be the reactive intermediates. Moreover, these novel compounds have been obtained in moderate to good yields, and their structures have been confirmed by 1H NMR, 13C NMR, and high-resolution mass spectrometry.
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Affiliation(s)
- Yanqin Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, P.R. China
| | - Biao Hu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, P.R. China
| | - Qiaohe Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, P.R. China
| | - Siyun Zhao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, P.R. China
| | - Yuxuan Zhao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, P.R. China
| | - Biao Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, P.R. China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, P.R. China
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Bao X, Rodriguez J, Bonne D. Enantioselective Synthesis of Atropisomers with Multiple Stereogenic Axes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002518] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Jean Rodriguez
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
| | - Damien Bonne
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
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Bao X, Rodriguez J, Bonne D. Enantioselective Synthesis of Atropisomers with Multiple Stereogenic Axes. Angew Chem Int Ed Engl 2020; 59:12623-12634. [DOI: 10.1002/anie.202002518] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Jean Rodriguez
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
| | - Damien Bonne
- Aix Marseille Université CNRS Centrale Marseille, iSm2 Marseille France
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