1
|
Cai Q, Yu T, Li J, Zhao Y, Hou J, Xue L, Yu S, Yao C, Li YM. Cu(II)-Catalyzed Enantioselective Aza-Friedel-Crafts Reaction of 1-Naphthols and Electron-Rich Phenols with Isatin-Derived Ketimines. Chemistry 2024; 30:e202304118. [PMID: 38433408 DOI: 10.1002/chem.202304118] [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: 12/11/2023] [Revised: 02/29/2024] [Accepted: 03/03/2024] [Indexed: 03/05/2024]
Abstract
New chiral ligands could be obtained by introducing proline moieties and imidazoline moieties to binaphthyl skeletons. The chiral ligands exhibited balanced rigidity and flexibility which could allow the change of the conformations during the reactions on one hand, and could provide sufficient asymmetric induction on the other. The proline moiety could act as a linker connecting the binaphthyl skeletons and the imidazoline moieties as well as a coordinating group for the central metal, and the electronic and steric properties of the imidazoline groups could be carefully fine-tuned by the use of different substituents. In the presence of Cu(II) catalyst bearing such chiral ligands, aza-Friedel-Crafts reaction of 1-naphthols and electron-rich phenols with isatin-derived ketimines provided the desired products with good to excellent yields and up to 99 % ee. The reactions showed good scalability, and excellent ee could still be obtained when the reaction was carried out in gram-scale.
Collapse
Affiliation(s)
- Qihang Cai
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Tianxu Yu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Jiahui Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Yan Zhao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Jiaqi Hou
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Leipeng Xue
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Shibo Yu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Chao Yao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| | - Yue-Ming Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, China
| |
Collapse
|
2
|
Jia ZH, Chen LY, Zheng H, Li ZR, Song QC, Li Y. Enantioselective Synthesis of Diarylmethylamines through the Aza-Friedel-Crafts Reaction of 1,3,5-Trialkoxy Benzenes and N-Sulfonyl Aldimines Catalyzed by BINOL-Derived Disulfonimides. J Org Chem 2023. [PMID: 37384900 DOI: 10.1021/acs.joc.3c00226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
A 1,1'-bi-2-naphthol (BINOL)-derived disulfonimide (DSI)-catalyzed enantioselective aza-Friedel-Crafts reaction between 1,3,5-trialkoxy benzenes and N-sulfonyl aldimines gives direct access to a series of chiral diarylmethylamines in good yields and good to excellent enantioselectivities (up to 97% ee). This reaction provides a useful protocol for the direct synthesis of diarylmethylamine derivatives.
Collapse
Affiliation(s)
- Zi-Hao Jia
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Ling-Yan Chen
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (Ministry of Education), East China University of Science and Technology, Shanghai 200237, China
| | - Hao Zheng
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Zhang-Rui Li
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Qing-Chun Song
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Ya Li
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| |
Collapse
|
3
|
Abstract
A Cu-catalyzed straightforward synthesis of benzoxazoles from free phenols and cyclic oxime esters is reported. The mild reaction conditions tolerate various electron-withdrawing and electron-donating functional groups on both substrates, affording benzoxazoles in moderate to good yields. With this protocol, large-scale syntheses of Ezutromid and Flunoxaprofe in one or two steps are demonstrated. A catalytic mechanism, which includes Cu-catalyzed amination via inner-sphere electron transfer and consequent annulation, is proposed.
Collapse
Affiliation(s)
- Zheng-Hai Wang
- Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
| | - Dong-Hui Wang
- Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China.,Department of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Boulevard, Nanjing 210023, China
| |
Collapse
|
4
|
Connon R, Roche B, Rokade BV, Guiry PJ. Further Developments and Applications of Oxazoline-Containing Ligands in Asymmetric Catalysis. Chem Rev 2021; 121:6373-6521. [PMID: 34019404 PMCID: PMC8277118 DOI: 10.1021/acs.chemrev.0c00844] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Indexed: 12/27/2022]
Abstract
The chiral oxazoline motif is present in many ligands that have been extensively applied in a series of important metal-catalyzed enantioselective reactions. This Review aims to provide a comprehensive overview of the most significant applications of oxazoline-containing ligands reported in the literature starting from 2009 until the end of 2018. The ligands are classified not by the reaction to which their metal complexes have been applied but by the nature of the denticity, chirality, and donor atoms involved. As a result, the continued development of ligand architectural design from mono(oxazolines), to bis(oxazolines), to tris(oxazolines) and tetra(oxazolines) and variations thereof can be more easily monitored by the reader. In addition, the key transition states of selected asymmetric transformations will be given to illustrate the features that give rise to high levels of asymmetric induction. As a further aid to the reader, we summarize the majority of schemes with representative examples that highlight the variation in % yields and % ees for carefully selected substrates. This Review should be of particular interest to the experts in the field but also serve as a useful starting point to new researchers in this area. It is hoped that this Review will stimulate both the development/design of new ligands and their applications in novel metal-catalyzed asymmetric transformations.
Collapse
Affiliation(s)
- Robert Connon
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Brendan Roche
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Balaji V. Rokade
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
| | - Patrick J. Guiry
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
| |
Collapse
|
5
|
Zhang Y, Liang Y, Zhao X. Chiral Selenide-Catalyzed, Highly Regio- and Enantioselective Intermolecular Thioarylation of Alkenes with Phenols. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00296] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuanyuan Zhang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Yaoyu Liang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| |
Collapse
|
6
|
Das S, Bhowmik A, Sarkar W, Mishra A, Deb I. Straightforward Access to Anthrone Functionalized Benzylic Amines via Organocatalytic 1,2-Addition of Anthrones to Imines at Ambient Temperature. J Org Chem 2021; 86:4131-4142. [PMID: 33620226 DOI: 10.1021/acs.joc.0c02959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Activation of anthrone via benzylic deprotonation in the presence of triethylamine paves the way for the 1,2-addition reaction with imines to provide the desired functionalized anthrones in good to excellent yields under mild and operationally simple reaction conditions with a broad range of substrate scopes without using any external additives or toxic stoichiometric reagents.
Collapse
Affiliation(s)
- Sumit Das
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Arup Bhowmik
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Writhabrata Sarkar
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Aniket Mishra
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division, CSIR - Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| |
Collapse
|
7
|
Kennedy-Ellis JJ, Boldt ED, Chemler SR. Synthesis of Benzylureas and Related Amine Derivatives via Copper-Catalyzed Three-Component Carboamination of Styrenes. Org Lett 2020; 22:8365-8369. [PMID: 33074005 DOI: 10.1021/acs.orglett.0c02988] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A direct assembly of secondary benzylureas and related amine derivatives via copper-catalyzed carboamination of styrenes with potassium alkyltrifluoroborates and ureas, anilines, or an amide is reported. Terminal and 1,2-disubstituted alkenes, as well as dienes, participate in this three-component coupling reaction. The reaction mechanism likely involves the addition of an alkyl radical to the styrene, followed by metal-mediated oxidative coupling of the resulting benzylic radical with the amine derivative. Factors that impact substrate reactivity and regioselectivity are discussed.
Collapse
Affiliation(s)
- Jonathan J Kennedy-Ellis
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Erik D Boldt
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Sherry R Chemler
- Chemistry Department, State University of New York at Buffalo, Buffalo, New York 14260, United States
| |
Collapse
|
8
|
Egorov IN, Santra S, Kopchuk DS, Kovalev IS, Zyryanov GV, Majee A, Ranu BC, Rusinov VL, Chupakhin ON. Direct Asymmetric Arylation of Imines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000548] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ilya N. Egorov
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
| | - Sougata Santra
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
| | - Dmitry S. Kopchuk
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division) 22/20, S. Kovalevskoy/Akademicheskaya Str. Yekaterinburg 62099 Russian Federation
| | - Igor S. Kovalev
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
| | - Grigory V. Zyryanov
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division) 22/20, S. Kovalevskoy/Akademicheskaya Str. Yekaterinburg 62099 Russian Federation
| | - Adinath Majee
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Brindaban C. Ranu
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur Kolkata 700032 India
| | - Vladimir L. Rusinov
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division) 22/20, S. Kovalevskoy/Akademicheskaya Str. Yekaterinburg 62099 Russian Federation
| | - Oleg N. Chupakhin
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University 19 Mira Str. Yekaterinburg 620002 Russian Federation
- I. Ya. Postovsky Institute of Organic Synthesis of RAS (Ural Division) 22/20, S. Kovalevskoy/Akademicheskaya Str. Yekaterinburg 62099 Russian Federation
| |
Collapse
|
9
|
Li WS, Kuo TS, Hsieh MC, Tsai MK, Wu PY, Wu HL. Enantioselective Rhodium-Catalyzed Allylation of Aliphatic Imines: Synthesis of Chiral C-Aliphatic Homoallylic Amines. Org Lett 2020; 22:5675-5679. [PMID: 32628021 DOI: 10.1021/acs.orglett.0c02069] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Reported herein is a method for the efficient syntheses of optically active 1-alkyl homoallylic amines in yields up to 95%, 13.5:1 dr, and 98% ee under mild, aqueous reaction conditions, via the Rh-catalyzed asymmetric allylation of aliphatic aldimines. This method provides a streamlined synthetic platform for the preparation of indolizidine and piperidine alkaloids, thus demonstrating its usefulness.
Collapse
Affiliation(s)
- Wei-Sian Li
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| | - Meng-Chi Hsieh
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| | - Ming-Kang Tsai
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| | - Ping-Yu Wu
- Oleader Technologies, Co., Ltd., 1F., No. 8, Aly. 29, Ln. 335, Chenggong Road, Hukou Township, Hsinchu 30345, Taiwan
| | - Hsyueh-Liang Wu
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| |
Collapse
|
10
|
Cao L, Zhao H, Tan Z, Guan R, Jiang H, Zhang M. Ruthenium-Catalyzed Hydrogen Evolution o-Aminoalkylation of Phenols with Cyclic Amines. Org Lett 2020; 22:4781-4785. [PMID: 32493014 DOI: 10.1021/acs.orglett.0c01580] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we present a ruthenium-catalyzed new hydrogen evolution ortho-aminoalkylation of phenolic derivatives with cyclic amines as the coupling agents. The developed cross-coupling reaction offers a practical platform for direct access to a variety of functionalized phenols with the features of good substrate and functional group compatibility, readily available catalyst system and feedstocks, no need for additional sacrificial oxidants, and high atom efficiency.
Collapse
Affiliation(s)
- Liang Cao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China
| | - He Zhao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China
| | - Zhenda Tan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China
| | - Rongqing Guan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China
| |
Collapse
|
11
|
Fesenko AA, Yankov AN, Shutalev AD. A general and convenient synthesis of 4-(tosylmethyl)semicarbazones and their use in amidoalkylation of hydrogen, heteroatom, and carbon nucleophiles. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130527] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
12
|
Luo H, Hu G, Li P. Sulfur-Mediated Allylic C-H Arylation, Epoxidation, and Aziridination. J Org Chem 2019; 84:10569-10578. [PMID: 31287687 DOI: 10.1021/acs.joc.9b01438] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Transition-metal-free, sulfur-mediated allylic C-H arylation, epoxidation, and aziridination were realized through one-pot procedures. The reaction design involved initial addition between olefins and triflic anhydride activated sulfoxides, followed by subsequent reactions of the allylic sulfur ylides generated under basic conditions with arylboronic acids, aldehydes, or aldimines, to give allylic arylation, epoxidation, or aziridination products, respectively.
Collapse
Affiliation(s)
- Hang Luo
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Gang Hu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China.,Department of Chemistry , Baotou Teacher's College , Baotou 014030 , China
| | - Pingfan Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| |
Collapse
|
13
|
Zhao ZB, Shi L, Li Y, Meng FJ, Zhou YG. Facile synthesis of chiral ε-sultams via an organocatalytic aza-Friedel-Crafts reaction. Org Biomol Chem 2019; 17:6364-6368. [PMID: 31225577 DOI: 10.1039/c9ob01158g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Chiral ε-sultams, with their unique strain cyclic structure, are a type of molecule with important biological activities. A facile enantioselective aza-Friedel-Crafts reaction of seven-membered cyclic N-sulfonylimines with naphthols was developed with a cinchona alkaloid-based bifunctional organocatalyst, giving chiral ε-sultams with an enantiomeric excess of up to 92%.
Collapse
Affiliation(s)
- Zi-Biao Zhao
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China. and State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.
| | - Lei Shi
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China.
| | - Yaming Li
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China.
| | - Fan-Jie Meng
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China.
| | - Yong-Gui Zhou
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China. and State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.
| |
Collapse
|
14
|
Zhang S, Del Pozo J, Romiti F, Mu Y, Torker S, Hoveyda AH. Delayed catalyst function enables direct enantioselective conversion of nitriles to NH 2-amines. Science 2019; 364:45-51. [PMID: 30948544 DOI: 10.1126/science.aaw4029] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 03/06/2019] [Indexed: 12/14/2022]
Abstract
Accessing enantiomerically enriched amines often demands oxidation-state adjustments, protection and deprotection processes, and purification procedures that increase cost and waste, limiting applicability. When diastereomers can be formed, one isomer is attainable. Here, we show that nitriles, largely viewed as insufficiently reactive, can be transformed directly to multifunctional unprotected homoallylic amines by enantioselective addition of a carbon-based nucleophile and diastereodivergent reduction of the resulting ketimine. Successful implementation requires that competing copper-based catalysts be present simultaneously and that the slower-forming and less reactive one engages first. This challenge was addressed by incorporation of a nonproductive side cycle, fueled selectively by inexpensive additives, to delay the function of the more active catalyst. The utility of this approach is highlighted by its application to the efficient preparation of the anticancer agent (+)-tangutorine.
Collapse
Affiliation(s)
- Shaochen Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA
| | - Juan Del Pozo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA
| | - Filippo Romiti
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA.,Supramolecular Science and Engineering Institute, University of Strasbourg, 67000 Strasbourg, France
| | - Yucheng Mu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA
| | - Sebastian Torker
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA.,Supramolecular Science and Engineering Institute, University of Strasbourg, 67000 Strasbourg, France
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA. .,Supramolecular Science and Engineering Institute, University of Strasbourg, 67000 Strasbourg, France
| |
Collapse
|
15
|
Bloemendal VRLJ, Sondag D, Elferink H, Boltje TJ, van Hest JCM, Rutjes FPJT. A Revised Modular Approach to (-)- trans-Δ 8-THC and Derivatives Through Late-Stage Suzuki-Miyaura Cross-Coupling Reactions. European J Org Chem 2019; 2019:2289-2296. [PMID: 31423106 PMCID: PMC6686972 DOI: 10.1002/ejoc.201900059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Indexed: 12/21/2022]
Abstract
A revised modular approach to various synthetic (–)‐trans‐Δ8‐THC derivatives through late‐stage Suzuki–Miyaura cross‐coupling reactions is disclosed. Ten derivatives were synthesized allowing both sp2‐ and sp3‐hybridized cross‐coupling partners with minimal β‐hydride elimination. Importantly, we demonstrate that a para‐bromo‐substituted THC scaffold for Suzuki–Miyaura cross‐coupling reactions has been initially reported incorrectly in recent literature.
Collapse
Affiliation(s)
- Victor R L J Bloemendal
- Institute for Molecules and Materials Heyendaalseweg 135 NL-6525 AJ Nijmegen The Netherlands
| | - Daan Sondag
- Institute for Molecules and Materials Heyendaalseweg 135 NL-6525 AJ Nijmegen The Netherlands
| | - Hidde Elferink
- Institute for Molecules and Materials Heyendaalseweg 135 NL-6525 AJ Nijmegen The Netherlands
| | - Thomas J Boltje
- Institute for Molecules and Materials Heyendaalseweg 135 NL-6525 AJ Nijmegen The Netherlands
| | - Jan C M van Hest
- Eindhoven University of Technology P.O. Box 513 (STO 3.31) NL-5600 MB Eindhoven The Netherlands
| | - Floris P J T Rutjes
- Institute for Molecules and Materials Heyendaalseweg 135 NL-6525 AJ Nijmegen The Netherlands
| |
Collapse
|
16
|
Reddy RB, Dudhe P, Chauhan P, Sengupta S, Chelvam V. Synthesis of tubuphenylalanine and epi-tubuphenylalanine via regioselective aziridine ring opening with carbon nucleophiles followed by hydroboration-oxidation of 1,1-substituted amino alkenes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
17
|
Schlegel M, Coburger P, Schneider C. A Novel Sc(OTf) 3 -Catalyzed (2+2+1)-Cycloannulation/Aza-Friedel-Crafts Alkylation Sequence toward Multicyclic 2-Pyrrolines. Chemistry 2018; 24:14207-14212. [PMID: 29939442 DOI: 10.1002/chem.201802478] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Indexed: 12/13/2022]
Abstract
The rapid assembly of molecular complexity continues to be at the forefront of novel reaction development. In the pursuit of that goal, we herein report a novel Sc(OTf)3 -catalyzed, one-pot multicomponent reaction that furnishes complex multicyclic 2-pyrrolines with excellent overall yields and perfect diastereocontrol. This process is based on our previously established (2+2+1)-cycloannulation of in situ generated 1-azaallyl cations, 1,3-dicarbonyls and primary amines. The newly formed and highly reactive aminal moiety is readily substituted with indoles and pyrroles both as external and internal π-nucleophiles to provide densely functionalized N-heterocycles with four new σ-bonds and two vicinal quaternary stereogenic centers. In addition, DFT calculations have been conducted to further characterize the intermediate 1-azaallyl cations.
Collapse
Affiliation(s)
- Marcel Schlegel
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| | - Peter Coburger
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| |
Collapse
|