1
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Galibert-Guijarro A, Tronc J, Mouysset D, Siri D, Gastaldi S, Bertrand MP, Feray L. Investigation of UV Light-Promoted Synthesis of α-Sulfonyl Amides from N-Sulfonyl Ynamides. J Org Chem 2024; 89:9695-9699. [PMID: 38965935 DOI: 10.1021/acs.joc.4c01013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
UV light-promoted synthesis of α-sulfonyl amides from N-sulfonyl ynamides without any additives is reported. The reaction proceeds through a radical chain mechanism involving the photoinduced cleavage of the nitrogen-sulfur bond and addition of an electrophilic sulfonyl radical to the triple bond of the ynamide followed by β-fragmentation of the sulfonyl group leading to a ketenimine hydrated upon workup. This highly efficient rearrangement leads, after acidic treatment, to a wide range of α-sulfonyl amides in high yields.
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Affiliation(s)
| | - Jérémy Tronc
- Aix Marseille Univ, CNRS, ICR, Marseille, 13013, France
| | | | - Didier Siri
- Aix Marseille Univ, CNRS, ICR, Marseille, 13013, France
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2
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Du X, Zhen JS, Xu XH, Yuan H, Li YH, Zheng Y, Xue C, Luo Y. Hydrosulfonylation of Alkenes with Sulfonyl Imines via Ir/Cu Dual Photoredox Catalysis. Org Lett 2022; 24:3944-3949. [PMID: 35617159 DOI: 10.1021/acs.orglett.2c01260] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sulfonamides exhibit the advantages of wide prevalence, excellent prefunctionalization capability, and broad functional group compatibility. We report here utilizing sulfonyl imines as sulfonyl radical precursors for hydrosulfonylation of activated alkenes via visible-light irradiation. By preinstallation of functional groups into the sulfonamides and subsequent hydrosulfonylation, a variety of complex sulfones were synthesized with good efficiency under Ir/Cu dual photoredox catalysis. Additionally, this protocol expands the research in late-stage N-S bond modification in sulfonamides.
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Affiliation(s)
- Xian Du
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Jing-Song Zhen
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Xiao-Hong Xu
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Han Yuan
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Yi-Hui Li
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Yeqin Zheng
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China
| | - Can Xue
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China
| | - Yong Luo
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
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3
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Tilby MJ, Dewez DF, Pantaine LRE, Hall A, Martínez-Lamenca C, Willis MC. Photocatalytic Late-Stage Functionalization of Sulfonamides via Sulfonyl Radical Intermediates. ACS Catal 2022; 12:6060-6067. [PMID: 35633900 PMCID: PMC9127806 DOI: 10.1021/acscatal.2c01442] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/22/2022] [Indexed: 01/01/2023]
Abstract
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A plethora of drug
molecules and agrochemicals contain the sulfonamide
functional group. However, sulfonamides are seldom viewed as synthetically
useful functional groups. To confront this limitation, a late-stage
functionalization strategy is described, which allows sulfonamides
to be converted to pivotal sulfonyl radical intermediates. This methodology
exploits a metal-free photocatalytic approach to access radical chemistry,
which is harnessed by combining pharmaceutically relevant sulfonamides
with an assortment of alkene fragments. Additionally, the sulfinate
anion can be readily obtained, further broadening the options for
sulfonamide functionalization. Mechanistic studies suggest that energy-transfer
catalysis (EnT) is in operation.
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Affiliation(s)
- Michael J. Tilby
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Damien F. Dewez
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Loïc R. E. Pantaine
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Adrian Hall
- UCB Biopharma SPRL, 1420 Braine-l’Alleud, 1070 Brussels, Belgium
| | | | - Michael C. Willis
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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4
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Zheng X, Shen Q, Yin C, Li L, Zhong T, Yu C. Photoinduced Three‐Component Difluoroamidosulfonylation/Bicyclization: Regioselectivity Synthesis of Seven‐Membered Dibenzosultams. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xiangyun Zheng
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Qitao Shen
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanliu Yin
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Lianghao Li
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Tianshuo Zhong
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanming Yu
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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5
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Serafino A, Chiminelli M, Balestri D, Marchiò L, Bigi F, Maggi RM, Malacria M, Maestri G. Dimerizing cascades of enallenamides reveal the visible-light-promoted activation of cumulated C-C double bonds. Chem Sci 2022; 13:2632-2639. [PMID: 35340858 PMCID: PMC8890112 DOI: 10.1039/d1sc06719b] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/25/2022] [Indexed: 01/07/2023] Open
Abstract
The visible-light-promoted activation of conjugated C-C double bonds is well developed, while that of cumulated systems is underexplored. We present the feasibility of this challenging approach. The localization of a triplet on an allenamide arm can be favored over that on a conjugated alkene. Allenamides with an arylacryloyl arm dimerize at room temperature in the presence of visible light and an iridium(iii) photocatalyst. Two orthogonal polycyclizations took place and their outcome is entirely dictated by the substitution of the alkene partner. Both cascades afford complex molecular architectures with high selectivity. Products form through the ordered rearrangement of twelve π electrons, providing a [3.2.0] bicyclic unit tethered to a fused tricycle, whose formation included an aryl C-H functionalization step, using disubstituted alkenes. The outcome was reverted with trisubstituted ones, which gave rise to taxane-like bridged tricycles that had two six-membered lactams flanking a cyclooctane ring, which was established through the creation of four alternate C-C bonds.
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Affiliation(s)
- Andrea Serafino
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area Delle Scienze 17/A 43124 Parma Italy
| | - Maurizio Chiminelli
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area Delle Scienze 17/A 43124 Parma Italy
| | - Davide Balestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area Delle Scienze 17/A 43124 Parma Italy
| | - Luciano Marchiò
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area Delle Scienze 17/A 43124 Parma Italy
| | - Franca Bigi
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area Delle Scienze 17/A 43124 Parma Italy .,IMEM-CNR Parco Area Delle Scienze 37/A 43124 Parma Italy
| | - Rai-Mondo Maggi
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area Delle Scienze 17/A 43124 Parma Italy
| | - Max Malacria
- Sorbonne Université, Faculty of Science and Engineering, IPCM (UMR CNRS 8232) 4 Place Jussieu 75252 Paris Cedex 05 France
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area Delle Scienze 17/A 43124 Parma Italy
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6
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Bai L, Ma Y, Jiang X. Total Synthesis of (-)-Calycanthine via Iron-Catalyzed Stereoselective Oxidative Dimerization. J Am Chem Soc 2021; 143:20609-20615. [PMID: 34871491 DOI: 10.1021/jacs.1c10498] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dimeric cyclotryptamine alkaloids typically feature vicinal all-carbon quaternary stereocenters and four nitrogen atoms. In comparison with the actual biosynthetic tryptophan derivatives, we designed the 2N-featured monomer 7, aiming to construct vicinal all-carbon quaternary stereocenters via a one-step dimerization process to access the 4N-featured isomeric members of this family. In this work, we disclose the first synthetic route to access the skeleton of (-)-isocalycanthine, featuring an iron-catalyzed oxidative dimerization reaction in a catalytic single-step operation with an overwhelming control of the absolute and relative stereochemistry. This strategy has been successfully applied to the total synthesis of (-)-calycanthine and 16 isocalycanthine derivatives, which demonstrates a new synthetic pathway for dimeric cyclotryptamine alkaloids.
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Affiliation(s)
- Leiyang Bai
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People's Republic of China
| | - Yinhao Ma
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People's Republic of China
| | - Xuefeng Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People's Republic of China.,State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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7
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Shen J, Wu Z, Liu Y, Bai Y, Qiu J, Zhang Z, Yuan Z, Zhu G. Radical Chain Isomerization of N-Sulfonyl Ynamides to Ketenimines and Its Application to Furan Dearomatization. Org Lett 2021; 23:9321-9326. [PMID: 34806892 DOI: 10.1021/acs.orglett.1c03729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A radical chain isomerization of N-sulfonyl ynamides to isolable ketenimines is developed, featuring mild reaction conditions, a high efficiency, ∼100% atom economy, a broad substrate scope, and column chromatography-free workup in most cases. Meanwhile, an unprecedented dearomatization of furans is achieved by the radical chain isomerization-triggered aza-Claisen rearrangement, providing highly chemo-, regio-, stereo-, and diastereoselective access to functionalized quaternary nitriles.
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Affiliation(s)
- Jiahuan Shen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zhenzhen Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Yi Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Yihui Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Jiayan Qiu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zheliang Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
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8
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Chu XQ, Ge D, Cui YY, Shen ZL, Li CJ. Desulfonylation via Radical Process: Recent Developments in Organic Synthesis. Chem Rev 2021; 121:12548-12680. [PMID: 34387465 DOI: 10.1021/acs.chemrev.1c00084] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
As the "chemical chameleon", sulfonyl-containing compounds and their variants have been merged with various types of reactions for the efficient construction of diverse molecular architectures by taking advantage of their incredible reactive flexibility. Currently, their involvement in radical transformations, in which the sulfonyl group typically acts as a leaving group via selective C-S, N-S, O-S, S-S, and Se-S bond cleavage/functionalization, has facilitated new bond formation strategies which are complementary to classical two-electron cross-couplings via organometallic or ionic intermediates. Considering the great influence and synthetic potential of these novel avenues, we summarize recent advances in this rapidly expanding area by discussing the reaction designs, substrate scopes, mechanistic studies, and their limitations, outlining the state-of-the-art processes involved in radical-mediated desulfonylation and related transformations. With a specific emphasis on their synthetic applications, we believe this review will be useful for medicinal and synthetic organic chemists who are interested in radical chemistry and radical-mediated desulfonylation in particular.
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Affiliation(s)
- Xue-Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Danhua Ge
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Ying Cui
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhi-Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, Montreal, Quebec H3A 0B8, Canada
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9
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Simic M, Jovanovic P, Petkovic M, Tasic G, Jovanovic M, Savic V. Toward the synthesis of incargranine B and seneciobipyrrolidine. Synthesis of octahydro‐dipyrroloquinoline skeleton via dipolar cycloaddition/amination sequence. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Milena Simic
- University of Belgrade Faculty of Pharmacy, Department of Organic Chemistry Belgrade Serbia
| | - Predrag Jovanovic
- University of Belgrade Faculty of Pharmacy, Department of Organic Chemistry Belgrade Serbia
| | - Milos Petkovic
- University of Belgrade Faculty of Pharmacy, Department of Organic Chemistry Belgrade Serbia
| | - Gordana Tasic
- University of Belgrade Faculty of Pharmacy, Department of Organic Chemistry Belgrade Serbia
| | - Milos Jovanovic
- University of Belgrade Faculty of Pharmacy, Department of Organic Chemistry Belgrade Serbia
| | - Vladimir Savic
- University of Belgrade Faculty of Pharmacy, Department of Organic Chemistry Belgrade Serbia
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10
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Gou XY, Li Y, Luan YY, Shi WY, Wang CT, An Y, Zhang BS, Liang YM. Ruthenium-Catalyzed Radical Cyclization/meta-Selective C–H Alkylation of Arenes via σ-Activation Strategy. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00359] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xue-Ya Gou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yuke Li
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Yu-Yong Luan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yang An
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Bo-Sheng Zhang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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11
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Zanella G, Petrović M, Scarpi D, Occhiato EG, Gómez-Bengoa E. Pentannulation of N-heterocycles by a tandem gold-catalyzed [3,3]-rearrangement/Nazarov reaction of propargyl ester derivatives: a computational study on the crucial role of the nitrogen atom. Beilstein J Org Chem 2020; 16:3059-3068. [PMID: 33414853 PMCID: PMC7753109 DOI: 10.3762/bjoc.16.255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/30/2020] [Indexed: 12/24/2022] Open
Abstract
The tandem gold(I)-catalyzed rearrangement/Nazarov reaction of enynyl acetates in which the double bond is embedded in a piperidine ring was computationally and experimentally studied. The theoretical calculations predict that the position of the propargylic acetate substituent has a great impact on the reactivity. In contrast to our previous successful cyclization of the 2-substituted substrates, where the nitrogen favors the formation of the cyclized final product, the substitution at position 3 was computed to have a deleterious effect on the electronic properties of the molecules, increasing the activation barriers of the Nazarov reaction. The sluggish reactivity of 3-substituted piperidines predicted by the calculations was further confirmed by the results obtained with some designed substrates.
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Affiliation(s)
- Giovanna Zanella
- Departamento de Química Orgánica I, University of the Basque Country, UPV-EHU, Manuel Lardizabal 3, 20018 Donostia, San Sebastián, Basque Country, Spain
| | - Martina Petrović
- Dipartimento di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Dina Scarpi
- Dipartimento di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Ernesto G Occhiato
- Dipartimento di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Enrique Gómez-Bengoa
- Departamento de Química Orgánica I, University of the Basque Country, UPV-EHU, Manuel Lardizabal 3, 20018 Donostia, San Sebastián, Basque Country, Spain
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12
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Guo LD, Chen Y, Xu J. Total Synthesis of Daphniphyllum Alkaloids: From Bicycles to Diversified Caged Structures. Acc Chem Res 2020; 53:2726-2737. [PMID: 33074659 DOI: 10.1021/acs.accounts.0c00532] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Native to the Asia-Pacific region and widely applied in traditional Chinese medicine, the genus Daphniphyllum has produced over 330 known Daphniphyllum alkaloids. Investigations into these alkaloids have shown an exceptional range of interesting bioactivities. Challenging and caged polycyclic architectures and the promising biological profiles make Daphniphyllum alkaloids intriguing synthetic targets. Based on their backbones, these alkaloids can be categorized into 13-35 structurally distinct subfamilies. In addition to our work, almost 30 impressive total syntheses of Daphniphyllum alkaloids from seven subfamilies, namely, daphniphylline-type, secodaphniphylline-type, daphnilactone A-type, bukittinggine-type, daphmanidin A-type, calyciphylline A-type, and calyciphylline B-type alkaloids, have been reported by 11 research groups. However, many Daphniphyllum alkaloid subfamilies remain inaccessible by chemical synthesis.In this Account, we summarize our recent endeavors in the total synthesis of Daphniphyllum alkaloids commencing from simple chiral bicyclic synthons. Daphniphyllum alkaloids with diversified skeletons from four different subfamilies, namely, calyciphylline A-type, daphnezomine A-type, bukittinggine-type, and yuzurimine-type alkaloids, have been achieved. Furthermore, the tricyclic core structure of daphniglaucin C-type alkaloids daphnimacropodines was also synthesized. First, we describe a 14-step synthesis of calyciphylline A-type alkaloid (-)-himalensine A, which features a mild Cu-mediated nitrile hydration, an intramolecular Heck reaction to assemble the pivotal 2-azabicyclo[3.3.1]nonane moiety, and a Meinwald rearrangement to introduce the critical oxidative state into the skeleton. We then introduce the synthesis of daphnezomine A-type alkaloid dapholdhamine B, which possesses a unique aza-adamantane core. This target molecule was fabricated using key reactions including Huang's amide-activation-annulation. An unexpected radical detosylation during the synthesis of dapholdhamine B further inspired an ambitious radical cyclization cascade strategy, which eventually led to an efficient total synthesis of bukittinggine-type alkaloid (-)-caldaphnidine O. This highly chemo-, regio-, and stereoselective radical reaction cascade also shed light on the synthetic strategy of other alkaloids with caged structures. We next describe the first total synthesis of yuzurimine-type alkaloid (+)-caldaphnidine J. The key steps in our approach include a Pd-catalyzed regioselective hydroformylation and a novel Swern oxidation/ketene dithioacetal Prins reaction cascade. The work has achieved the first synthesis of a member of the largest subfamily of Daphniphyllum alkaloids. Finally, we show our efforts toward the total synthesis of daphniglaucin C-type alkaloids. Overall, we hope that the interesting strategies and synthetic methods demonstrated in our efforts could inspire a wide variety of additional applications to natural product synthesis.
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Affiliation(s)
- Lian-Dong Guo
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuye Chen
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
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13
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Zhou Y, Zhao P, Yu XX, Geng X, Wang C, Huang C, Yang H, Zhao ZY, Wu AX. Radical Tandem Bicyclization Triggered by the α-Position of α,β-Unsaturated Ketones Bearing Nonterminal 1,6-Enynes: Synthesis of the 5 H-Benzo[ a]fluoren-5-one Skeleton. Org Lett 2020; 22:8359-8364. [PMID: 33040530 DOI: 10.1021/acs.orglett.0c02990] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel method for the synthesis of 5H-benzo[a]fluoren-5-one from inactive nonterminal 1,6-alkynes through a free radical tandem bicyclization process has been established. This process achieved a continuous cyclization triggered rarely by the α-position of α,β-unsaturated ketones. The reaction constructed three C-C bonds in one step with the readily accessible substrates and excellent substrate compatibility.
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Affiliation(s)
- You Zhou
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Peng Zhao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiao-Xiao Yu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiao Geng
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Can Wang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Chun Huang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Hai Yang
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Zhi-Yong Zhao
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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14
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González‐Muñoz D, Nova‐Fernández JL, Martinelli A, Pascual‐Coca G, Cabrera S, Alemán J. Visible Light Photocatalytic Synthesis of Tetrahydroquinolines Under Batch and Flow Conditions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Daniel González‐Muñoz
- Organic Chemistry Department, M1 Science Faculty Universidad Autónoma de Madrid 28049 Madrid Spain
| | - José Luis Nova‐Fernández
- Organic Chemistry Department, M1 Science Faculty Universidad Autónoma de Madrid 28049 Madrid Spain
- C/Faraday 7. Labs 2.05 and 0.03 Synthelia Organics Labs Parque Científico de Madrid 28049 Madrid Spain
| | - Ada Martinelli
- Organic Chemistry Department, M1 Science Faculty Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Gustavo Pascual‐Coca
- C/Faraday 7. Labs 2.05 and 0.03 Synthelia Organics Labs Parque Científico de Madrid 28049 Madrid Spain
| | - Silvia Cabrera
- Inorganic Chemistry Department, M7 Science Faculty Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
| | - José Alemán
- Organic Chemistry Department, M1 Science Faculty Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
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15
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Serafino A, Balestri D, Marchiò L, Malacria M, Derat E, Maestri G. Orthogonal Syntheses of 3.2.0 Bicycles from Enallenes Promoted by Visible Light. Org Lett 2020; 22:6354-6359. [PMID: 32806183 PMCID: PMC8010793 DOI: 10.1021/acs.orglett.0c02193] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
![]()
Enallenes
can be readily converted into two families of 3.2.0 (hetero)bicycles
with high diastereoselectivities through the combination of visible
light with a suitable Ir(III) complex (1 mol %). Two complementary
pathways, namely, a photocycloaddition versus a radical chain, can
then take place. Both manifolds grant complete regiocontrol of the
allene difunctionalization. This is accompanied by an original 1,3-group
shift using sulfonyl allenamides that deliver a congested tetrasubstituted
headbridging carbon in the corresponding product.
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Affiliation(s)
- Andrea Serafino
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Davide Balestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Luciano Marchiò
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Max Malacria
- Faculty of Science and Engineering, CNRS, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), 4 place Jussieu, Paris 75252 Cedex 05, France
| | - Etienne Derat
- Faculty of Science and Engineering, CNRS, Institut Parisien de Chimie Moléculaire (UMR CNRS 8232), 4 place Jussieu, Paris 75252 Cedex 05, France
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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16
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Gilbert N, Ricard S, Bergeron J, Lambolez P, Daoust B. Synthesis of Exo- and Endocyclic Enamides Through Copper-Catalyzed Regioselective Intramolecular N
-Halovinylation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nicolas Gilbert
- Département de Chimie, Biochimie et Physique; Université du Québec à Trois-Rivières; CP 500 Trois-Rivières Québec Canada
| | - Simon Ricard
- Département de Chimie, Biochimie et Physique; Université du Québec à Trois-Rivières; CP 500 Trois-Rivières Québec Canada
| | - Jodrey Bergeron
- Département de Chimie, Biochimie et Physique; Université du Québec à Trois-Rivières; CP 500 Trois-Rivières Québec Canada
| | - Pierre Lambolez
- Département de Chimie, Biochimie et Physique; Université du Québec à Trois-Rivières; CP 500 Trois-Rivières Québec Canada
| | - Benoit Daoust
- Département de Chimie, Biochimie et Physique; Université du Québec à Trois-Rivières; CP 500 Trois-Rivières Québec Canada
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17
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McManus JB, Onuska NPR, Jeffreys MS, Goodwin NC, Nicewicz DA. Site-Selective C–H Alkylation of Piperazine Substrates via Organic Photoredox Catalysis. Org Lett 2020; 22:679-683. [DOI: 10.1021/acs.orglett.9b04456] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joshua B. McManus
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Nicholas P. R. Onuska
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Matthew S. Jeffreys
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Nicole C. Goodwin
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - David A. Nicewicz
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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18
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Bertho S, Dondasse I, Retailleau P, Nicolas C, Gillaizeau I. β-C(sp2)–H alkylation of enamides using xanthate chemistry. NEW J CHEM 2020. [DOI: 10.1039/d0nj01209b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Access to the γ-amino-β,γ-unsaturated acyl scaffold was established by applying xanthate chemistry to enamides.
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Affiliation(s)
- Sylvain Bertho
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d’Orléans
- 45100 Orléans
- France
| | - Ismaël Dondasse
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d’Orléans
- 45100 Orléans
- France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex
- France
| | - Cyril Nicolas
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d’Orléans
- 45100 Orléans
- France
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d’Orléans
- 45100 Orléans
- France
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19
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Guo LD, Hu J, Zhang Y, Tu W, Zhang Y, Pu F, Xu J. Enantioselective Total Synthesis of (-)-Caldaphnidine O via a Radical Cyclization Cascade. J Am Chem Soc 2019; 141:13043-13048. [PMID: 31381311 DOI: 10.1021/jacs.9b07558] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The synthetically challenging, diverse chemical skeletons and promising biological profiles of the Daphniphyllum alkaloids have generated intense interest from the synthetic chemistry community. Herein, the first and enantioselective total synthesis of (-)-caldaphnidine O, a complex bukittinggine-type Daphniphyllum alkaloid, is described. The key transformations in this concise approach included an intramolecular aza-Michael addition, a ring expansion reaction sequence, a Sm(II)/Fe(III)-mediated Kagan-Molander coupling, and the rapid formation of the entire hexacyclic ring skeleton of the target molecule via a radical cyclization cascade reaction, which was inspired by an unexpected radical detosylation observed in our recent dapholdhamine B synthesis.
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Affiliation(s)
- Lian-Dong Guo
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , China
| | - Jingping Hu
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , China
| | - Yan Zhang
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , China
| | - Wentong Tu
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , China
| | - Yue Zhang
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , China
| | - Fan Pu
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , China
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20
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Tong X, Shi B, Liang K, Liu Q, Xia C. Enantioselective Total Synthesis of (+)‐Flavisiamine F via Late‐Stage Visible‐Light‐Induced Photochemical Cyclization. Angew Chem Int Ed Engl 2019; 58:5443-5446. [PMID: 30884052 DOI: 10.1002/anie.201901241] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/18/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Xiaogang Tong
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
| | - Bingfei Shi
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Kangjiang Liang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Qian Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
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21
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Tong X, Shi B, Liang K, Liu Q, Xia C. Enantioselective Total Synthesis of (+)‐Flavisiamine F via Late‐Stage Visible‐Light‐Induced Photochemical Cyclization. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaogang Tong
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
| | - Bingfei Shi
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Kangjiang Liang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Qian Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource (Ministry of Education and Yunnan Province)State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Chemical Science and TechnologyYunnan University Kunming 650091 China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaKunming Institute of Botany, CAS Kunming 650201 Yunnan China
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22
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Wright SW, Li B, Peng Z, Wei L, McInturff E, Place D, Damon DB, Singer RA. Improvements to Enable the Large Scale Synthesis of 1-{[(2S,3S,4S)-3-Ethyl-4-fluoro-5-oxopyrrolidin-2-yl]methoxy}-7-methoxyisoquinoline-6-carboxamide (PF-06650833). Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00386] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen W. Wright
- Medicine Design, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Bryan Li
- Chemical Research and Development, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Zhihui Peng
- Chemical Research and Development, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Lulin Wei
- Chemical Research and Development, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Emma McInturff
- Chemical Research and Development, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - David Place
- Chemical Research and Development, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - David B. Damon
- Chemical Research and Development, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Robert A. Singer
- Chemical Research and Development, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
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23
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Li SL, Yang C, Wu Q, Zheng HL, Li X, Cheng JP. Atroposelective Catalytic Asymmetric Allylic Alkylation Reaction for Axially Chiral Anilides with Achiral Morita-Baylis-Hillman Carbonates. J Am Chem Soc 2018; 140:12836-12843. [PMID: 30226765 DOI: 10.1021/jacs.8b06014] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A highly efficient method to access axially chiral anilides through asymmetric allylic alkylation reaction with achiral Morita-Baylis-Hillman carbonates by using a biscinchona alkaloid catalyst was reported. Through the atroposelective approach, a broad range of axially chiral anilide products with different acyl groups, such as substituted phenyl, naphthyl, alkyl, enyl, styryl, and benzyl, were generated with very good yields, moderate to excellent cis: trans ratios, and good to excellent enantioselectivities. The reaction can be scaled up, and the synthetic utility of axially chiral anilides was proved by transformations. Moreover, the linear free energy relationship analysis was introduced to investigate the reaction.
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Affiliation(s)
- Shou-Lei Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Chen Yang
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Quan Wu
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Han-Liang Zheng
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
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24
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Grant PS, Brimble MA, Furkert DP. Synthesis of the Bicyclic Lactone Core of Leonuketal, Enabled by a Telescoped Diels-Alder Reaction Sequence. Chem Asian J 2018; 14:1128-1135. [PMID: 30058292 DOI: 10.1002/asia.201800903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/24/2018] [Indexed: 01/04/2023]
Abstract
The Diels-Alder cycloaddition reaction has become established as a fundamental approach for the preparation of complex natural products; however, successful application of the intermolecular Diels-Alder cycloaddition reaction to the synthesis of particularly congested scaffolds remains surprisingly problematic. Inspired by the terpenoid spiroketal natural product leonuketal, a challenging telescoped reaction sequence has been realized to access the core [2.2.2]-bicyclic lactone ring system and its [3.2.1] isomer. Our four-step, protecting-group-free process required detailed investigation to circumvent the problems of adduct fragmentation and intermediate instability. Successful solution of these practical issues, along with unambiguous structural determination of the target structures, provide useful insights that will facilitate future applications of the Diels-Alder cycloaddition reaction to challenging, highly congested molecular scaffolds and ongoing synthetic efforts towards this natural product.
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Affiliation(s)
- Phillip S Grant
- School of Chemical Sciences, University of Auckland, Symonds St, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, Symonds St, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Symonds St, Auckland, 1010, New Zealand
| | - Daniel P Furkert
- School of Chemical Sciences, University of Auckland, Symonds St, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Symonds St, Auckland, 1010, New Zealand
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25
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Sulfur Radicals and Their Application. Top Curr Chem (Cham) 2018; 376:22. [DOI: 10.1007/s41061-018-0197-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/11/2018] [Indexed: 12/11/2022]
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26
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Zhong X, Chen N, Xu J. A concise synthesis of cyclobrassinin and its analogues via a thiyl radical aromatic substitution. NEW J CHEM 2018. [DOI: 10.1039/c8nj02037j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Cyclobrassinin and its six and seven-membered ring analogues have been synthesized through a thiyl radical-mediated intramolecular aromatic substitution of brassinin derivatives.
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Affiliation(s)
- Xin Zhong
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Ning Chen
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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27
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Huang X, Luo S, Burghaus O, Webster RD, Harms K, Meggers E. Combining the catalytic enantioselective reaction of visible-light-generated radicals with a by-product utilization system. Chem Sci 2017; 8:7126-7131. [PMID: 29147543 PMCID: PMC5637358 DOI: 10.1039/c7sc02621h] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 08/16/2017] [Indexed: 12/16/2022] Open
Abstract
We report an unusual reaction design in which a chiral bis-cyclometalated rhodium(iii) complex enables the stereocontrolled chemistry of photo-generated carbon-centered radicals and at the same time catalyzes an enantioselective sulfonyl radical addition to an alkene.
We report an unusual reaction design in which a chiral bis-cyclometalated rhodium(iii) complex enables the stereocontrolled chemistry of photo-generated carbon-centered radicals and at the same time catalyzes an enantioselective sulfonyl radical addition to an alkene. Specifically, employing inexpensive and readily available Hantzsch esters as the photoredox mediator, Rh-coordinated prochiral radicals generated by a selective photoinduced single electron reduction are trapped by allyl sulfones in a highly stereocontrolled fashion, providing radical allylation products with up to 97% ee. The hereby formed fragmented sulfonyl radicals are utilized via an enantioselective radical addition to form chiral sulfones, which minimizes waste generation.
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Affiliation(s)
- Xiaoqiang Huang
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany .
| | - Shipeng Luo
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany .
| | - Olaf Burghaus
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany .
| | - Richard D Webster
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Klaus Harms
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany .
| | - Eric Meggers
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany .
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28
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Sato M, Azuma H, Daigaku A, Sato S, Takasu K, Okano K, Tokuyama H. Total Synthesis of (−)-Histrionicotoxin through a Stereoselective Radical Translocation-Cyclization Reaction. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609941] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Manabu Sato
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Hiroki Azuma
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Akihiro Daigaku
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Sota Sato
- ERATO, Isobe Degenerate π-Integration Project and Advanced Institute for Materials Research (AIMR); 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
- AIMR and Department of Chemistry; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Kentaro Okano
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
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29
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Total Synthesis of (−)-Histrionicotoxin through a Stereoselective Radical Translocation-Cyclization Reaction. Angew Chem Int Ed Engl 2016; 56:1087-1091. [DOI: 10.1002/anie.201609941] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Indexed: 11/07/2022]
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30
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Gao F, Yang C, Ma N, Gao GL, Li D, Xia W. Visible-Light-Mediated 1,7-Enyne Bicyclizations for Synthesis of Cyclopenta[c]quinolines and Benzo[j]phenanthridines. Org Lett 2016; 18:600-3. [DOI: 10.1021/acs.orglett.5b03662] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Fei Gao
- State Key Lab of Urban Water
Resource and Environment, Shenzhen Graduate School, Harbin Institute of Technology, Harbin 150080, China
| | - Chao Yang
- State Key Lab of Urban Water
Resource and Environment, Shenzhen Graduate School, Harbin Institute of Technology, Harbin 150080, China
| | - Na Ma
- State Key Lab of Urban Water
Resource and Environment, Shenzhen Graduate School, Harbin Institute of Technology, Harbin 150080, China
| | - Guo-Lin Gao
- State Key Lab of Urban Water
Resource and Environment, Shenzhen Graduate School, Harbin Institute of Technology, Harbin 150080, China
| | - Dazhi Li
- State Key Lab of Urban Water
Resource and Environment, Shenzhen Graduate School, Harbin Institute of Technology, Harbin 150080, China
| | - Wujiong Xia
- State Key Lab of Urban Water
Resource and Environment, Shenzhen Graduate School, Harbin Institute of Technology, Harbin 150080, China
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31
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Zhang H, Hay EB, Geib SJ, Curran DP. Fates of imine intermediates in radical cyclizations of N-sulfonylindoles and ene-sulfonamides. Beilstein J Org Chem 2015; 11:1649-55. [PMID: 26664585 PMCID: PMC4660904 DOI: 10.3762/bjoc.11.181] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 08/27/2015] [Indexed: 11/23/2022] Open
Abstract
Two new fates of imine intermediates formed on radical cyclizations of ene-sulfonamides have been identified, reduction and hydration/fragmentation. Tin hydride-mediated cyclizations of 2-halo-N-(3-methyl-N-sulfonylindole)anilines provide spiro[indoline-3,3'-indolones] or spiro-3,3'-biindolines (derived from imine reduction), depending on the indole C2 substituent. Cyclizations of 2-haloanilide derivatives of 3-carboxy-N-sulfonyl-2,3-dihydropyrroles also presumably form spiro-imines as primary products. However, the lactam carbonyl group facilitates the ring-opening of these cyclic imines by a new pathway of hydration and retro-Claisen-type reaction, providing rearranged 2-(2'-formamidoethyl)oxindoles.
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Affiliation(s)
- Hanmo Zhang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - E Ben Hay
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Stephen J Geib
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Dennis P Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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Zhu YL, Jiang B, Hao WJ, Qiu JK, Sun J, Wang DC, Wei P, Wang AF, Li G, Tu SJ. Catalytic Arylsulfonyl Radical Triggered 1,7-Enyne Bicyclizations. Org Lett 2015; 17:6078-81. [DOI: 10.1021/acs.orglett.5b03100] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yi-Long Zhu
- Biotechnology
and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu P. R. China
- School
of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory
of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu P. R. China
| | - Bo Jiang
- School
of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory
of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu P. R. China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Wen-Juan Hao
- School
of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory
of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu P. R. China
| | - Jiang-Kai Qiu
- Biotechnology
and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu P. R. China
- School
of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory
of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu P. R. China
| | - Jun Sun
- Biotechnology
and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu P. R. China
- School
of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory
of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu P. R. China
| | - De-Cai Wang
- Biotechnology
and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu P. R. China
| | - Ping Wei
- Biotechnology
and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu P. R. China
| | - Ai-Fang Wang
- School
of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory
of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu P. R. China
| | - Guigen Li
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- Institute
of Chemistry & BioMedical Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Shu-Jiang Tu
- School
of Chemistry and Chemical Engineering, and Jiangsu Key Laboratory
of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, Jiangsu P. R. China
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33
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Gonnard L, Guérinot A, Cossy J. Cobalt-catalyzed cross-coupling of 3- and 4-iodopiperidines with Grignard reagents. Chemistry 2015; 21:12797-803. [PMID: 26179378 DOI: 10.1002/chem.201501543] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Indexed: 02/05/2023]
Abstract
A cobalt-catalyzed cross-coupling between 3- and 4-iodopiperidines and Grignard reagents is disclosed. The reaction is an efficient, cheap, chemoselective, and flexible way to functionalize piperidines. This coupling was used as the key step to realize a short synthesis of (±)-preclamol. Some mechanistic investigations were conducted that highlight the formation of radical intermediates.
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Affiliation(s)
- Laurine Gonnard
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin 75231 Paris Cedex 05 (France)
| | - Amandine Guérinot
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin 75231 Paris Cedex 05 (France).
| | - Janine Cossy
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin 75231 Paris Cedex 05 (France).
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34
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Huang L, Arndt M, Gooßen K, Heydt H, Gooßen LJ. Late Transition Metal-Catalyzed Hydroamination and Hydroamidation. Chem Rev 2015; 115:2596-697. [DOI: 10.1021/cr300389u] [Citation(s) in RCA: 739] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Liangbin Huang
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Matthias Arndt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Käthe Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Heinrich Heydt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J. Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
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35
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Yu YF, Shu C, Zhou B, Li JQ, Zhou JM, Ye LW. Efficient and practical synthesis of enantioenriched 2,3-dihydropyrroles through gold-catalyzed anti-Markovnikov hydroamination of chiral homopropargyl sulfonamides. Chem Commun (Camb) 2015; 51:2126-9. [DOI: 10.1039/c4cc09245g] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A direct gold-catalyzed anti-Markovnikov hydroamination of chiral homopropargyl sulfonamides has been developed. A range of enantioenriched 2,3-dihydropyrroles are readily accessed by utilizing this approach.
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Affiliation(s)
- Yong-Fei Yu
- State Key Laboratory for Physical Chemistry of Solid Surfaces & The Key Laboratory for Chemical Biology of Fujian Province
- Department of Chemistry
- Xiamen University
- Xiamen
- P. R. China
| | - Chao Shu
- State Key Laboratory for Physical Chemistry of Solid Surfaces & The Key Laboratory for Chemical Biology of Fujian Province
- Department of Chemistry
- Xiamen University
- Xiamen
- P. R. China
| | - Bo Zhou
- State Key Laboratory for Physical Chemistry of Solid Surfaces & The Key Laboratory for Chemical Biology of Fujian Province
- Department of Chemistry
- Xiamen University
- Xiamen
- P. R. China
| | - Jian-Qiao Li
- State Key Laboratory for Physical Chemistry of Solid Surfaces & The Key Laboratory for Chemical Biology of Fujian Province
- Department of Chemistry
- Xiamen University
- Xiamen
- P. R. China
| | - Jin-Mei Zhou
- State Key Laboratory for Physical Chemistry of Solid Surfaces & The Key Laboratory for Chemical Biology of Fujian Province
- Department of Chemistry
- Xiamen University
- Xiamen
- P. R. China
| | - Long-Wu Ye
- State Key Laboratory for Physical Chemistry of Solid Surfaces & The Key Laboratory for Chemical Biology of Fujian Province
- Department of Chemistry
- Xiamen University
- Xiamen
- P. R. China
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36
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Campbell NE, Sammis GM. Single-Electron/Pericyclic Cascade for the Synthesis of Dienes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Campbell NE, Sammis GM. Single-electron/pericyclic cascade for the synthesis of dienes. Angew Chem Int Ed Engl 2014; 53:6228-31. [PMID: 24782362 DOI: 10.1002/anie.201403234] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 11/12/2022]
Abstract
The highly efficient and diastereoselective synthesis of E dienes has been accomplished through radical cyclization of bromoallyl hydrazones. This methodology has been further extended to generate these products through a one-pot condensation/radical cyclization/cycloreversion cascade from simple aldehyde starting materials in high yields (>75%) and high diastereoselectivities (>95:5). Mechanistic investigations suggest that the cascade reaction proceeds through a cyclic diazene intermediate prior to the cycloreversion.
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Affiliation(s)
- Natalie E Campbell
- University of British Columbia, Department of Chemistry, 2036 Main Mall, Vancouver V6T 1Z1 (Canada)
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Shang H, Wang Y, Tian Y, Feng J, Tang Y. The Divergent Synthesis of Nitrogen Heterocycles by Rhodium(II)-Catalyzed Cycloadditions of 1-Sulfonyl 1,2,3-Triazoles with 1,3-Dienes. Angew Chem Int Ed Engl 2014; 53:5662-6. [DOI: 10.1002/anie.201400426] [Citation(s) in RCA: 167] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 03/10/2014] [Indexed: 11/11/2022]
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39
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Shang H, Wang Y, Tian Y, Feng J, Tang Y. The Divergent Synthesis of Nitrogen Heterocycles by Rhodium(II)-Catalyzed Cycloadditions of 1-Sulfonyl 1,2,3-Triazoles with 1,3-Dienes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400426] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Fu W, Zhu M, Xu F, Fu Y, Xu C, Zou D. An approach to 6-trifluoromethyl-phenanthridines through visible-light-mediated intramolecular radical cyclization of trifluoroacetimidoyl chlorides. RSC Adv 2014. [DOI: 10.1039/c4ra02384f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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