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Li X, Sheng H, Song Q. Rhodium-Catalyzed Intramolecular Cyclization to Synthesize 2-Aminobenzofurans via Carbene Metathesis Reactions. Org Lett 2023; 25:2113-2117. [PMID: 36940428 DOI: 10.1021/acs.orglett.3c00539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Abstract
Herein, we report a new method of synthesizing of 2-aminobenzofuran 3-enes via the formal C-S insertion reaction of alkyne-tethered diazo compounds. Metal carbene, as a kind of active synthetic intermediate, plays a very important role in organic synthesis. Through the carbene/alkyne metathesis strategy, a new donor carbene is produced in situ as a key intermediate, which has different reactions from the donor receptor carbene.
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Affiliation(s)
- Xue Li
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Heyun Sheng
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
- Key Laboratory of Molecule Synthesis and Function Discovery (Fijian Province University), College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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Zuo S, Tao Y, Liu Z, Zhang K, Zhang L, Ning Y, Chen FE. Construction of Vicinal All-Carbon Stereogenic Centers via Copper-Catalyzed Asymmetric Decarboxylative Propargylation: Enantio- and Diastereoselective Synthesis of Substituted Spirolactones. Org Lett 2023; 25:410-415. [PMID: 36629396 DOI: 10.1021/acs.orglett.2c04113] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The formation of vicinal all-carbon quaternary stereocenters remains a formidable challenge. We report herein the synthesis of such highly congested structural dyads by copper-catalyzed decarboxylative propargylation between propargyl carbonates and indanone-based nucleophiles. The implementation of diphenylethylenediamine (DPEN)-based ligands is the key to success. A wide range of functional groups was tolerated, delivering the indanone-based spirolactones in good yields with high diastereo- and enantioselectivity. The mechanistic observations suggest the capability of the new copper complex to enable stereocontrolled addition to copper-allenylidene species.
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Affiliation(s)
- Sheng Zuo
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, 200433 Shanghai, China.,Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, 200433 Shanghai, China
| | - Yuan Tao
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, 200433 Shanghai, China.,Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, 200433 Shanghai, China
| | - Zhigang Liu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, 200433 Shanghai, China.,Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, 200433 Shanghai, China
| | - Ke Zhang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, 200433 Shanghai, China.,Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, 200433 Shanghai, China
| | - Luyun Zhang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, 200433 Shanghai, China.,Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, 200433 Shanghai, China
| | - Yingtang Ning
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, 200433 Shanghai, China.,Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, 200433 Shanghai, China
| | - Fen-Er Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, 200433 Shanghai, China.,Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, 200433 Shanghai, China
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Ding R, Cui H, Zhu Y, Zhou Y, Tao H, Mai S. Domino Sonogashira coupling/metal carbene-involved annulation enabled by Pd/Cu relay catalysis: rapid assembly of indazole-containing biheteroaryls. Org Chem Front 2023. [DOI: 10.1039/d3qo00367a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
An efficient and novel method has been developed for the synthesis of indazole-containing biheteroaryls via a domino Sonogashira coupling/azaenyne cycloisomerization/Barton–Kellogg reaction.
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Yang S, Wang HQ, Gao JN, Tan WX, Zhang YC, Shi F. Lewis Acid‐Catalyzed (3+2) Cycloaddition of 2‐Indolylmethanols with β,γ‐Unsaturated α‐Ketoesters. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shuang Yang
- Jiangsu Normal University department of chemistry CHINA
| | - Hai-Qing Wang
- Jiangsu Normal University department of chemistry CHINA
| | - Jun-Nan Gao
- Jiangsu Normal University department of chemistry CHINA
| | - Wen-Xin Tan
- Jiangsu Normal University department of chemistry CHINA
| | - Yu-Chen Zhang
- Jiangsu Normal University department of chemistry CHINA
| | - Feng Shi
- Jiangsu Normal University School of Chemistry and Chemical Engineering Tongshan New District, Shanghai Road 101 221116 Xuzhou CHINA
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Sun X, Li K, Zhao S, Zha Z, Wang Z. Construction of chiral 3-alkenyl-3-substituted oxindoles by stereoselective direct alkenylation of isatin derivatives and 3-vinylindoles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.04.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Deng R, Han TJ, Gao X, Yang YF, Mei GJ. Further developments of β,γ-unsaturated α-ketoesters as versatile synthons in asymmetric catalysis. iScience 2022; 25:103913. [PMID: 35243262 PMCID: PMC8881726 DOI: 10.1016/j.isci.2022.103913] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Xu XH, Dong ZB. Iodine promoted cyclization of N, N′-diphenylthiocarbamides with enaminones: a protocol for the synthesis of poly-substituted 2-iminothiazolines. Org Biomol Chem 2022; 20:8533-8537. [DOI: 10.1039/d2ob01477g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An iodine promoted cyclization reaction between N,N′-diphenylthiocarbamides and enaminones was achieved, providing a series of poly-substituted 2-iminothiazolines.
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Affiliation(s)
- Xiao-Hu Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zhi-Bing Dong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
- Key Laboratory of Green Chemical Process, Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
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Gao X, Pan X, Wang P, Jin Z. Visible Light-induced Phosphine-Catalyzed Perfluoroalkylation of Indoles. Org Chem Front 2022. [DOI: 10.1039/d2qo01091g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photo-induced, catalytic phosphine-promoted perfluoroalkylation reaction of indole molecules is developed. Inexpensive and readily available PPh3 is used in a catalytic amount as the sole reaction initiator in this protocol....
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