1
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Trofimova A, White B, Diaz DB, Širvinskas MJ, Lough A, Dudding T, Yudin AK. A Boron Scan of Ethyl Acetoacetate Leads to Versatile Building Blocks. Angew Chem Int Ed Engl 2024; 63:e202319842. [PMID: 38277239 DOI: 10.1002/anie.202319842] [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: 12/22/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 01/28/2024]
Abstract
Discovered in the 19th century, ethyl acetoacetate has been central to the development of organic chemistry, including its pedagogy and applications. In this study, we present borylated derivatives of this venerable molecule. A boron handle has been installed at either α ${{\rm \alpha }}$ - or β ${\beta }$ -position of acetoacetate by homologation of acyl-MIDA (N-methyliminodiacetic acid) boronates with diazoacetates. Either alkyl or boryl groups were found to migrate with regiochemistry being a function of the steric bulk of the diazo species. Boryl β ${{\rm \beta }}$ -ketoesters can be further modified into borylated pyrazolones and oximes, thereby expanding the synthetic toolkit and offering opportunities for additional modifications.
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Affiliation(s)
- Alina Trofimova
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Brandon White
- Department of Chemistry, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Diego B Diaz
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Martynas J Širvinskas
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Alan Lough
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Andrei K Yudin
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
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2
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Zhong Z, Ma TK, White AJP, Bull JA. Synthesis of Pyrazolesulfoximines Using α-Diazosulfoximines with Alkynes. Org Lett 2024; 26:1178-1183. [PMID: 38306458 PMCID: PMC10877601 DOI: 10.1021/acs.orglett.3c04274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/26/2024] [Accepted: 02/01/2024] [Indexed: 02/04/2024]
Abstract
Sulfoximines and pyrazoles are both important motifs in medicinal compounds. Here we report the synthesis and reactivity of sulfoximine diazo compounds as new reagents for the incorporation of sulfoximines. The use of N-silyl sulfoximines enabled formation of monosubstituted diazo compounds. Their application is demonstrated in a [3 + 2] cycloaddition with alkynes to form pyrazole sulfoximines in a new combination of these important chemotypes. Further derivatization of the pyrazole sulfoximines is demonstrated, including silyl deprotection to form unprotected pyrazolesulfoximines.
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Affiliation(s)
- Zhenhao Zhong
- Department of Chemistry, Imperial College London, Molecular Sciences Research
Hub, White City Campus, Wood Lane, London W12
0BZ, U.K.
| | - Tsz-Kan Ma
- Department of Chemistry, Imperial College London, Molecular Sciences Research
Hub, White City Campus, Wood Lane, London W12
0BZ, U.K.
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, Molecular Sciences Research
Hub, White City Campus, Wood Lane, London W12
0BZ, U.K.
| | - James A. Bull
- Department of Chemistry, Imperial College London, Molecular Sciences Research
Hub, White City Campus, Wood Lane, London W12
0BZ, U.K.
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3
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Luo W, Xu F, Wang Z, Pang J, Wang Z, Sun Z, Peng A, Cao X, Li L. Chemodivergent Staudinger Reactions of Secondary Phosphine Oxides and Application to the Total Synthesis of LL-D05139β Potassium Salt. Angew Chem Int Ed Engl 2023; 62:e202310118. [PMID: 37594845 DOI: 10.1002/anie.202310118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/19/2023]
Abstract
Unprecedented Staudinger reaction modes of secondary phosphine oxides (SPO) and organic azides are herein disclosed. By the application of various additives, selective nitrogen atom exclusion from the azide group has been achieved. Chlorotrimethylsilane mediates a stereoretentive Staudinger reaction with a 2-N exclusion which provides a valuable method for the synthesis of phosphinic amides and can be considered complementary to the stereoinvertive Atherton-Todd reaction. Alternatively, a 1-N exclusion pathway is promoted by acetic acid to provide the corresponding diazo compound. The effectiveness of this protocol has been further demonstrated by the total synthesis of the diazo-containing natural product LL-D05139β, which was prepared as a potassium salt for the first time in 6 steps and 26.5 % overall yield.
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Affiliation(s)
- Wenjun Luo
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Fang Xu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development, Ministry of Education (MOE) of P. R. China, College of Pharmacy, Jinan University, 510632, Guangzhou, Guangdong, P. R. China
| | - Zhenguo Wang
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Jiyan Pang
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Zixu Wang
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Zhixiu Sun
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Aiyun Peng
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Xiaohui Cao
- School of Pharmacy, Guangdong Pharmaceutical University, 510006, Guangzhou, P. R. China
| | - Le Li
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
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4
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Zhang FR, Cao F, Liu K, He YP, Luo G, Ye ZS. Bifunctional Lewis Base Catalyzed Asymmetric N-Allylic Alkylation of 2-Hydroxypyridines. Org Lett 2022; 24:8603-8608. [DOI: 10.1021/acs.orglett.2c03207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Fei-Ruo Zhang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Fanshu Cao
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P.R. China
| | - Kui Liu
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Yi-Ping He
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
| | - Gen Luo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P.R. China
| | - Zhi-Shi Ye
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. China
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5
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Wu W, Yan X, Li X, Ning Y, Hu L, Zhu L, Ouyang Q, Peng Y. Highly Enantioselective Synthesis of [1,2,4]Triazino[5,4- a]isoquinoline Derivatives via (3 + 3) Cycloaddition Reactions of Diazo Compounds and Isoquinolinium Methylides. Org Lett 2022; 24:3766-3771. [PMID: 35604766 DOI: 10.1021/acs.orglett.2c01122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An array of chiral [1,2,4]triazino[5,4-a]isoquinoline derivatives were obtained in excellent yields (up to 98%) and with excellent enantioselectivities (up to 99% ee) via a new highly asymmetric (3 + 3) cycloaddition reaction of diazo compounds and isoquinolinium methylides, with a bifunctional chiral phase-transfer catalyst (PTC). Density functional theory calculations show that PTC has a bridge role in the deprotonation/protonation process. The obtained products were transformed into densely functionalized polycyclic heterocompounds with multiple stereocenters.
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Affiliation(s)
- Wei Wu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Xiao Yan
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Xiaofeng Li
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yanqiang Ning
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Lei Hu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Lei Zhu
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Qin Ouyang
- College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Yungui Peng
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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6
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Ma J, Gao B, Song G, Zhang R, Wang Q, Ye Z, Chen WW, Zhao B. Asymmetric α-Allylation of Glycinate with Switched Chemoselectivity Enabled by Customized Bifunctional Pyridoxal Catalysts. Angew Chem Int Ed Engl 2022; 61:e202200850. [PMID: 35182094 DOI: 10.1002/anie.202200850] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Indexed: 12/15/2022]
Abstract
Owing to the strong nucleophilicity of the NH2 group, free-NH2 glycinates react with MBH acetates to usually deliver N-allylated products even in the absence of catalysts. Without protection of the NH2 group, chiral pyridoxal catalysts bearing an amide side chain at the C3 position of the naphthyl ring switched the chemoselectivity of the glycinates from intrinsic N-allylation to α-C allylation. The reaction formed chiral multisubstituted glutamic acid esters as SN 2'-SN 2' products in good yields with excellent stereoselectivity (up to 86 % yield, >20 : 1 dr, 97 % ee). As compared to pyridoxal catalysts bearing an amide side arm at the C2 position, the pyridoxals in this study have a bigger catalytic cavity to enable effective activation of larger electrophiles, such as MBH acetates and related intermediates. The reaction is proposed to proceed via a cooperative bifunctional catalysis pathway, which accounts for the high level of diastereo- and enantiocontrol of the pyridoxal catalysts.
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Affiliation(s)
- Jiguo Ma
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
| | - Bin Gao
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
| | - Guanshui Song
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
| | - Ruixin Zhang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
| | - Qingfang Wang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
| | - Zi Ye
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
| | - Wen-Wen Chen
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
| | - Baoguo Zhao
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China
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7
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Ma J, Gao B, Song G, Zhang R, Wang Q, Ye Z, Chen WW, Zhao B. Asymmetric a‐Allylation of Glycinate with Switched Chemoselectivity Enabled by Customized Bifunctional Pyridoxal Catalysts. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiguo Ma
- Shanghai Normal University Chemistry CHINA
| | - Bin Gao
- Shanghai Normal University Chemistry CHINA
| | | | | | | | - Zi Ye
- Shanghai Normal University Chemistry CHINA
| | - Wen-Wen Chen
- Shanghai Normal University Chemistry 100 Guilin Rd 200234 Shanghai CHINA
| | - Baoguo Zhao
- Shanghai Normal University Chemistry Department 100 Guiling Rd 200234 Shanghai CHINA
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8
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Li Z, Mutlu H, Theato P, Bräse S. Synthesis and post-polymerization modification of poly(propargyl 2-ylidene-acetate). Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Sakamoto K, Ikawa Y, Yoshimura T, Matsuo J. Brønsted Acid‐Catalyzed Cyclopropanation of Indoles Using α‐Aryl‐α‐diazoacetates. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kenta Sakamoto
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences Kanazawa University Kakuma-machi, Kanazawa 920-1192 Japan
| | - Yuya Ikawa
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences Kanazawa University Kakuma-machi, Kanazawa 920-1192 Japan
| | - Tomoyuki Yoshimura
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences Kanazawa University Kakuma-machi, Kanazawa 920-1192 Japan
| | - Jun‐ichi Matsuo
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences Kanazawa University Kakuma-machi, Kanazawa 920-1192 Japan
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10
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Zhou J, Yin C, Zhong T, Zheng X, Yi X, Chen J, Yu C. A direct synthesis method towards spirocyclic indazole derivatives via Rh( iii)-catalyzed C–H activation and spiroannulation. Org Chem Front 2021. [DOI: 10.1039/d1qo00805f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A rhodium(iii)-catalyzed [4 + 1] spiroannulation of N-aryl phthalazine-diones (pyridazine-diones) with diazo compounds to construct spirocyclic indazole derivatives with diverse structures is described.
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Affiliation(s)
- Jian Zhou
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. of China
| | - Chuanliu Yin
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. of China
| | - Tianshuo Zhong
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. of China
| | - Xiangyun Zheng
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. of China
| | - Xiao Yi
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. of China
| | - Junyu Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. of China
| | - Chuanming Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. of China
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11
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Wu X, Zheng P, Li W, XU T. Reductive cross-coupling to access C–N bonds from aryl halides and diazoesters under dual nickel/photoredox-catalyzed conditions. Org Chem Front 2021. [DOI: 10.1039/d1qo00548k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A reductive cross-coupling reaction to access C–N bonds via dual Ni/photoredox-catalyzed systems has been reported. This method tolerates a broad scope of functional groups and the products can be transformed into several heterocycles.
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Affiliation(s)
- Xiaoqiang Wu
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- P. R. China
| | - Purui Zheng
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- P. R. China
| | - Wanfang Li
- Department of Chemistry
- College of Science
- University of Shanghai for Science and Technology
- Shanghai
- P. R. China
| | - Tao XU
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- School of Chemical Science and Engineering
- Tongji University
- Shanghai
- P. R. China
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12
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Wu W, Wang Y, Guo J, Cai L, Chen Y, Huang Y, Peng Y. Asymmetric acyl-Mannich reaction of isoquinolines with α-(diazomethyl)phosphonate and diazoacetate catalyzed by chiral Brønsted acids. Chem Commun (Camb) 2020; 56:11235-11238. [DOI: 10.1039/d0cc03201h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
α-Diazo-β-isoquinoline derivatives were obtained in excellent yields and enantioselectivities by asymmetric acyl-Mannich reaction of (diazomethyl)phosphonate or diazoacetate with isoquinolines.
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Affiliation(s)
- Wei Wu
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Yan Wang
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Jing Guo
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Liu Cai
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Yuan Chen
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Yanmin Huang
- College of Chemistry and Life Science
- Guangxi Teachers Education University
- Nanning 530001
- China
| | - Yungui Peng
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
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13
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Li Z, Frings M, Yu H, Bolm C. Organocatalytic Synthesis of Sulfoximidoyl-Containing Carbamates from Sulfoximines and Morita–Baylis–Hillman Carbonates. Org Lett 2019; 21:3119-3122. [DOI: 10.1021/acs.orglett.9b00772] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhen Li
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Marcus Frings
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Hao Yu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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14
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Lu D, Zhu M, Wang W, Wu S, Saunders BR, Adlam DJ, Hoyland JA, Hofzumahaus C, Schneider S, Landfester K. Do the properties of gels constructed by interlinking triply-responsive microgels follow from those of the building blocks? SOFT MATTER 2019; 15:527-536. [PMID: 30444236 DOI: 10.1039/c8sm01510d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Microgels (MGs) are swellable crosslinked polymer colloids. They can also be used as the only building block to construct nanostructured hydrogels which are denoted as doubly crosslinked microgels (DX MGs). Here, new triply responsive DX MGs comprised of interlinked MGs of oligo(ethylene glycol)methacrylate (OEGMA), 2-(2-methoxyethoxy)ethyl methacrylate (MEO2MA), methacrylic acid (MAA) and a o-nitrobenzyl-based UV photocleavable crosslinker are investigated. The MGs swelled or collapsed in response to temperature and pH changes. These behaviours were rationalised with a generic model using Monte Carlo simulations. The MGs also degraded when UV irradiated due to photocleavage of nPh. DX MGs were assembled from the MGs to give injectable gels that were not cytotoxic to nucleus pulposus cells. Comparison of the responsive properties of the DX MGs and MGs showed that the temperature and pH responses of the former were mostly governed by the latter. However, two key differences were found. Firstly, whilst increasing the crosslinker mol% in the MG building blocks (x) did not change MG particle swelling, the compression modulus (E) and swelling of the DX MG gels were strongly affected by x. The E value for the gels was tuneable using x which is a potentially useful new observation for DX MGs. Secondly, UV irradiation of the DX MGs enhanced gel mechanical photostability in contrast to the behaviour of the MGs. We find that the properties of the DX MGs do not simply follow those of the parent MGs and propose mechanisms to account for the differences. The new family of multi-responsive DX MGs presented in this study have potential application for soft tissue repair as injectable gels or as gel implants which report sterilisation.
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Affiliation(s)
- Dongdong Lu
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Mingning Zhu
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Wenkai Wang
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Shanglin Wu
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Brian R Saunders
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Daman J Adlam
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK and NIHR Manchester Musculoskeletal Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Cornelius Hofzumahaus
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Stefanie Schneider
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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15
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Ray SK, Sadhu MM, Biswas RG, Unhale RA, Singh VK. A General Catalytic Route to Enantioenriched Isoindolinones and Phthalides: Application in the Synthesis of (S)-PD 172938. Org Lett 2019; 21:417-422. [DOI: 10.1021/acs.orglett.8b03597] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sumit K. Ray
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
| | - Milon M. Sadhu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
| | - Rayhan G. Biswas
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
| | - Rajshekhar A. Unhale
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, UP - 208 016, India
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16
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Kaye PT. Applications of the Morita–Baylis–Hillman Reaction in the Synthesis of Heterocyclic Systems. ADVANCES IN HETEROCYCLIC CHEMISTRY 2019. [DOI: 10.1016/bs.aihch.2018.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Unhale RA, Sadhu MM, Ray SK, Biswas RG, Singh VK. A chiral Brønsted acid-catalyzed highly enantioselective Mannich-type reaction of α-diazo esters with in situ generated N-acyl ketimines. Chem Commun (Camb) 2018; 54:3516-3519. [DOI: 10.1039/c8cc01436a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A chiral phosphoric acid-catalyzed asymmetric Mannich-type reaction of α-diazo esters with in situ generated N-acyl ketimines, derived from 3-aryl-3-hydroxyisoindolinones has been demonstrated. The reaction proceeds smoothly under mild reaction conditions.
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Affiliation(s)
- Rajshekhar A. Unhale
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
| | - Milon M. Sadhu
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
| | - Sumit K. Ray
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
| | - Rayhan G. Biswas
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
| | - Vinod K. Singh
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
- Department of Chemistry
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18
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Shimomoto H, Kudo T, Tsunematsu S, Itoh T, Ihara E. Fluorinated Poly(substituted methylene)s Prepared by Pd-Initiated Polymerization of Fluorine-Containing Alkyl and Phenyl Diazoacetates: Their Unique Solubility and Postpolymerization Modification. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01964] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomohiko Kudo
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Shogo Tsunematsu
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomomichi Itoh
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Eiji Ihara
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
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19
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Wang J, Wang P, Wang L, Li D, Wang K, Wang Y, Zhu H, Yang D, Wang R. Nickel-Mediated Asymmetric Allylic Alkylation between Nitroallylic Acetates and Acyl Imidazoles. Org Lett 2017; 19:4826-4829. [PMID: 28862455 DOI: 10.1021/acs.orglett.7b02264] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A nickel-mediated asymmetric allylic alkylation reaction between imidazole-modified ketones and nitroallylic acetates is presented. This reaction is catalyzed by a simple chiral diamine-nickel catalyst under mild conditions and leads to a series of novel enantioenriched α-allylic adducts in moderate to good yields with excellent enantioselectivities. Furthermore, transformation of the allylic adducts could smoothly lead to chiral γ-nitro-esters containing three continuous stereocenters in good yields.
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Affiliation(s)
- Jie Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Pengxin Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Dan Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Kezhou Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Yuan Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Haiyong Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University , Lanzhou, 730000, China
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20
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Li Z, Lam SM, Ip I, Wong WT, Chiu P. Rearrangements of α-Diazo-β-hydroxyketones for the Synthesis of Bicyclo[m.n.1]alkanones. Org Lett 2017; 19:4464-4467. [DOI: 10.1021/acs.orglett.7b01963] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengning Li
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Shuk Mei Lam
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Ignatius Ip
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Wing-tak Wong
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Pauline Chiu
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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21
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Chen R, Zhao Y, Sun H, Shao Y, Xu Y, Ma M, Ma L, Wan X. In Situ Generation of Quinolinium Ylides from Diazo Compounds: Copper-Catalyzed Synthesis of Indolizine. J Org Chem 2017; 82:9291-9304. [DOI: 10.1021/acs.joc.7b01042] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rongxiang Chen
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Yanwei Zhao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Hongmei Sun
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Ying Shao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
- Jiangsu
Key Laboratory of Advanced Catalytic Materials and Technology, Advanced
catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China
| | - Yudong Xu
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Meihua Ma
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Liang Ma
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Xiaobing Wan
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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22
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Xu B, Gartman J, Tambar UK. Copper-catalyzed [1,2]-rearrangements of allylic iodides and aryl α-diazoacetates. Tetrahedron 2017; 73:4150-4159. [PMID: 28966401 PMCID: PMC5614460 DOI: 10.1016/j.tet.2017.01.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The [1,2]- and [2,3]-rearrangements of iodonium ylides are synthetically useful reactions for the generation of functionalized α-iodoesters. Allylic iodides are coupled with α-diazoesters in the presence of a copper catalyst and a ligand to generate iodonium ylides, which undergo metal-mediated rearrangements. By fine-tuning the structure of the ligand, we have reversed the regioselectivity of copper-catalyzed reactions of iodonium ylides from [2,3]- to [1,2]-rearrangements with the use of alternate bipyridine ligands. The preference for [1,2]-rearrangements was further improved by using bulky aryl α-diazoester substrates. Several α-iodoesters with a diverse range of functional groups were generated in good yields (up to 88% yield) and high regioselectivities (up to >95:5 regioisomeric ratio). A deuterium-labeled substrate was utilized to gain insight into the mechanism of the reaction.
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Affiliation(s)
- Bin Xu
- Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, United States
| | - Jackson Gartman
- Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, United States
| | - Uttam K Tambar
- Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, United States
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23
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Fu L, Mighion JD, Voight EA, Davies HML. Synthesis of 2,2,2,-Trichloroethyl Aryl- and Vinyldiazoacetates by Palladium-Catalyzed Cross-Coupling. Chemistry 2017; 23:3272-3275. [PMID: 28093820 DOI: 10.1002/chem.201700101] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Indexed: 11/11/2022]
Abstract
An efficient and convenient synthesis of 2,2,2-trichloroethyl (TCE) aryl- and vinyldiazoacetates was achieved by palladium-catalyzed cross-coupling reactions between TCE diazoacetates and aryl or vinyl iodides. The broad substrate scope allows for rapid and facile formation of TCE aryl- and vinyldiazoacetates, which recently have emerged as versatile reagents for rhodium-carbene chemistry.
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Affiliation(s)
- Liangbing Fu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
| | - Jeffrey D Mighion
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
| | - Eric A Voight
- Research & Development, AbbVie, 1 North Waukegan Road, North Chicago, Illinois, 60064, USA
| | - Huw M L Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
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24
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Du F, Zhou J, Peng Y. Asymmetric Reaction of α-Diazomethylphosphonates with α-Ketoesters To Access Optically Active α-Diazo-β-hydroxyphosphonate Derivatives. Org Lett 2017; 19:1310-1313. [DOI: 10.1021/acs.orglett.7b00128] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Du
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P.R. China
| | - Jiao Zhou
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P.R. China
| | - Yungui Peng
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P.R. China
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25
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Dairo TO, Woo LK. Scope and Mechanism of Iridium Porphyrin-Catalyzed S–H Insertion Reactions between Thiols and Diazo Esters. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00947] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taiwo O. Dairo
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011-1021, United States
| | - L. Keith Woo
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011-1021, United States
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26
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Du F, Yin L, Ning Y, Peng Y. Catalytic Asymmetric Synthesis of Phosphoryl-1,4-dihydropyridazinesviaan Enantioselective Allylic Alkylation/1,3-Dipolar Cycloaddition/Rearrangement Reaction Sequence. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600353] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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27
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Ma J, Yuan ZZ, Kong XW, Wang H, Li YM, Xiao H, Zhao G. Reagent-Controlled Tandem Reactions of Vinyl Epoxides: Access to Functionalized γ-Butenolides. Org Lett 2016; 18:1450-3. [DOI: 10.1021/acs.orglett.6b00392] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Juan Ma
- Department
of Pharmaceutical Engineering, Hefei University of Technology, 193 Tunxi
Road, Hefei 230009, P. R. China
| | - Zhe-zhe Yuan
- Department
of Pharmaceutical Engineering, Hefei University of Technology, 193 Tunxi
Road, Hefei 230009, P. R. China
| | - Xiang-wen Kong
- Department
of Pharmaceutical Engineering, Hefei University of Technology, 193 Tunxi
Road, Hefei 230009, P. R. China
| | - Huai Wang
- Department
of Pharmaceutical Engineering, Hefei University of Technology, 193 Tunxi
Road, Hefei 230009, P. R. China
| | - Yi-ming Li
- Department
of Pharmaceutical Engineering, Hefei University of Technology, 193 Tunxi
Road, Hefei 230009, P. R. China
| | - Hua Xiao
- Department
of Pharmaceutical Engineering, Hefei University of Technology, 193 Tunxi
Road, Hefei 230009, P. R. China
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Lu, Shanghai 200032, P. R. China
| | - Gang Zhao
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Lu, Shanghai 200032, P. R. China
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28
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Zhu G, Yang J, Bao G, Zhang M, Li J, Li Y, Sun W, Hong L, Wang R. Catalyst-controlled switch of regioselectivity in the asymmetric allylic alkylation of oxazolones with MBHCs. Chem Commun (Camb) 2016; 52:7882-5. [DOI: 10.1039/c6cc03246j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A catalyst-controlled switch of regioselectivity in asymmetric allylic alkylation of oxazolones with MBHCs was described.
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Affiliation(s)
- Gongming Zhu
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
| | - Junxian Yang
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
| | - Guangjun Bao
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
| | - Ming Zhang
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
| | - Jing Li
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
| | - Yiping Li
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
| | - Wangsheng Sun
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
| | - Liang Hong
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| | - Rui Wang
- School of Life Sciences
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- School of Basic Medical Sciences
- Lanzhou University
- Lanzhou
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29
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Liu B, Giordano F, Pei K, Decoppet JD, Zhu WH, Zakeeruddin SM, Grätzel M. Molecular Engineering of Pyrido[3,4-b
]pyrazine-Based Donor-Acceptor-π-Acceptor Organic Sensitizers: Effect of Auxiliary Acceptor in Cobalt- and Iodine-Based Electrolytes. Chemistry 2015; 21:18654-61. [DOI: 10.1002/chem.201503514] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Indexed: 11/09/2022]
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30
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Hu M, Ni C, Li L, Han Y, Hu J. gem-Difluoroolefination of Diazo Compounds with TMSCF3 or TMSCF2Br: Transition-Metal-Free Cross-Coupling of Two Carbene Precursors. J Am Chem Soc 2015; 137:14496-501. [DOI: 10.1021/jacs.5b09888] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mingyou Hu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Chuanfa Ni
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Lingchun Li
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Yongxin Han
- Boston-Kenilworth
LO Chemistry, Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
| | - Jinbo Hu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
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31
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Peng J, Ran GY, Du W, Chen YC. Divergent Cyclization Reactions of Morita–Baylis–Hillman Carbonates of 2-Cyclohexenone and Isatylidene Malononitriles. Org Lett 2015; 17:4490-3. [PMID: 26332366 DOI: 10.1021/acs.orglett.5b02157] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jing Peng
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Ministry
of Education, West China School of Pharmacy, and State Key Laboratory
of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Guang-Yao Ran
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Ministry
of Education, West China School of Pharmacy, and State Key Laboratory
of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Ministry
of Education, West China School of Pharmacy, and State Key Laboratory
of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Ministry
of Education, West China School of Pharmacy, and State Key Laboratory
of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
- College
of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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32
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A facile and mild synthesis of trisubstituted allylic sulfones from Morita-Baylis-Hillman carbonates. Molecules 2015; 20:8213-22. [PMID: 25961162 PMCID: PMC6272667 DOI: 10.3390/molecules20058213] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/29/2015] [Accepted: 05/04/2015] [Indexed: 11/17/2022] Open
Abstract
An efficient and catalyst-free synthesis of trisubstituted allylic sulfones through an allylic sulfonylation reaction of Morita-Baylis-Hillman (MBH) carbonates with sodium sulfinates has been developed. Under the optimized reaction conditions, a series of trisubstituted allylic sulfones were rapidly prepared in good to excellent yields (71%–99%) with good to high selectivity (Z/E from 79:21 to >99:1). Compared with known synthetic methods, the current protocol features mild reaction temperature, high efficiency and easily available reagents.
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33
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Jiang L, Yuan ML, Zhou JF, Li F, Li YG, Li HL, Chuan YM. Organocatalytic Regioselective Three-Component, One-Pot Allylic Substitution of Morita-Baylis-Hillman Carbonates. HETEROCYCLES 2015. [DOI: 10.3987/com-15-13205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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34
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Yang HB, Fan X, Wei Y, Shi M. Solvent-controlled nucleophilic trifluoromethylthiolation of Morita–Baylis–Hillman carbonates: dual roles of DABCO in activating the Zard's trifluoromethylthiolation reagent and the MBH carbonates. Org Chem Front 2015. [DOI: 10.1039/c5qo00198f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel amine-catalyzed nucleophilic trifluoromethylthiolation between Morita–Baylis–Hillman carbonates and O-octadecyl-S-trifluorothiolcarbonate has been developed.
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Affiliation(s)
- Hai-Bin Yang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Xing Fan
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
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35
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Xu G, Zhu C, Gu W, Li J, Sun J. Gold(I)-Catalyzed Diazo Cross-Coupling: A Selective and Ligand-Controlled Denitrogenation/Cyclization Cascade. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409845] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Xu G, Zhu C, Gu W, Li J, Sun J. Gold(I)-catalyzed diazo cross-coupling: a selective and ligand-controlled denitrogenation/cyclization cascade. Angew Chem Int Ed Engl 2014; 54:883-7. [PMID: 25385462 DOI: 10.1002/anie.201409845] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Indexed: 11/10/2022]
Abstract
An unprecedented gold-catalyzed ligand-controlled cross-coupling of diazo compounds by sequential selective denitrogenation and cyclization affords N-substituted pyrazoles in a position-switchable mode. This novel transformation features selective decomposition of one diazo moiety and simultaneous preservation of the other one from two substrates. Notably, the choice of the ancillary ligand to the gold complex plays a pivotal role on the chemo- and regioselectivity of the reactions.
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Affiliation(s)
- Guangyang Xu
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164 (China)
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37
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Yang HB, Zhao YZ, Sang R, Shi M. (DHQ)2AQN-Catalyzed Asymmetric Substitution of Isatin-Derived Hydrazones with O-Boc-Protected Morita–Baylis–Hillman Adducts: A Strategy for Synthesizing Enantioenriched Azo Compounds Incorporating an Oxindole Scaffold. J Org Chem 2014; 79:3519-28. [DOI: 10.1021/jo5003246] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hai-Bin Yang
- State Key Laboratory
of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yun-Zhou Zhao
- State Key Laboratory
of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Rui Sang
- State Key Laboratory
of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Min Shi
- State Key Laboratory
of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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38
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Mao H, Lin A, Tang Z, Hu H, Zhu C, Cheng Y. Organocatalytic One-Pot Synthesis of Highly Substituted Pyridazines from Morita-Baylis-Hillman Carbonates and Diazo Compounds. Chemistry 2014; 20:2454-8. [DOI: 10.1002/chem.201304295] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Indexed: 01/19/2023]
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39
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P. Doyle M, M. Truong P, D. Mandler M, S. Shanahan C. Lewis Acid Catalyzed Diastereoselective 1,3-Dipolar Cycloaddition between Diazoacetoacetate Enones and Azomethine Ylides. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)63] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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41
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Mao H, Tang Z, Hu H, Cheng Y, Zheng WH, Zhu C. Lewis base mediated halogenation/semipinacol rearrangement of diazo compounds: new access to α-halo-quaternary ketones. Chem Commun (Camb) 2014; 50:9773-5. [DOI: 10.1039/c4cc04154b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel halogenation/semipinacol rearrangement of α-diazo alcohol catalyzed by Lewis base has been developed through a carbene-free mechanism.
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Affiliation(s)
- Haibin Mao
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing, P. R. China
| | - Zhongkai Tang
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing, P. R. China
| | - Hongwen Hu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing, P. R. China
| | - Yixiang Cheng
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing, P. R. China
| | - Wen-Hua Zheng
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing, P. R. China
| | - Chengjian Zhu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing, P. R. China
- State Key Laboratory of Organometallic Chemistry
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42
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Peng J, Huang X, Zheng PF, Chen YC. Rauhut–Currier-Type Reaction with Morita–Baylis–Hillman Carbonates of 2-Cyclohexenone and Alkylidenemalononitriles To Access Chromene Derivatives. Org Lett 2013; 15:5534-7. [PMID: 24134066 DOI: 10.1021/ol402694b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jing Peng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, Department of Medicinal Chemistry, West China School of Pharmacy and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Xin Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, Department of Medicinal Chemistry, West China School of Pharmacy and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Peng-Fei Zheng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, Department of Medicinal Chemistry, West China School of Pharmacy and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, Department of Medicinal Chemistry, West China School of Pharmacy and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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43
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Wang QG, Zhou QQ, Deng JG, Chen YC. An Asymmetric Allylic Alkylation–Smiles Rearrangement–Sulfinate Addition Sequence to Construct Chiral Cyclic Sulfones. Org Lett 2013; 15:4786-9. [PMID: 23992537 DOI: 10.1021/ol402158u] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Quan-Gang Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Qing-Qing Zhou
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Jin-Gen Deng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China, and College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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