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Price J, Tallaie T, Eisler S. Pericyclic Cascade Reactions Affording Thienyl- and Benzo[ b]thienyl-Fused Architectures: A Synthetic and Density Functional Theory Analysis of Asynchronous Diels-Alder Reactions of Thioarylmaleimides. J Org Chem 2024; 89:1379-1388. [PMID: 38215402 DOI: 10.1021/acs.joc.3c01797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
Herein, we report the synthesis and characterization of a series of thioarylmaleimides and their varied propensity toward highly selective domino Diels-Alder (D-A)/rearrangement, D-A/ene/elimination, and D-A/oxidation reactions to give three types of thienyl-fused architectures. Stereochemical assignment was achieved using a combination of nuclear magnetic resonance (NMR) studies, gauge independent atomic orbital (GIAO) NMR chemical shift calculations, and DP4+ analysis. Transition-state calculations support an asynchronous concerted mechanism and provide support for rationalizing the observed regio- and stereoselectivity.
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Affiliation(s)
- Jayden Price
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
| | - Tabassom Tallaie
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
| | - Sara Eisler
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
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2
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Wang S, Chen Z, Chen S, Shao W, Chen Y, Deng GJ. Iodide-Dependent Selective Dehydroaromatization Affording Maleimide-Fused 9,10-Phenanthrenes and Their Analogues. Org Lett 2023; 25:7142-7147. [PMID: 37732874 DOI: 10.1021/acs.orglett.3c02638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
A novel and selective synthesis of polycyclic fused maleimides from easily available raw materials under metal-free conditions is presented. This cascade protocol involves self-condensation of cyclohexanones, followed by Diels-Alder reaction with maleimides, intramolecular dehydration, and selective dehydroaromatization in a one-pot fashion, affording maleimide-fused 9,10-phenanthrenes and their analogues in satisfactory yields. Notably, iodide reagents play a critical role in switching the selectivity toward full or partial dehydrogenation compounds.
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Affiliation(s)
- Shuowen Wang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Zhuohao Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Shanping Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Wen Shao
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Ya Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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3
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Huang J, Wang W, Zhang L, Meng X. Recent advances in the synthesis of benzo[b]thiophene fused polycyclic derivatives: strategies and reactions. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yue Y, Chao J, Wang Z, Yang Y, Ye Y, Sun C, Guo X, Liu J. Electrooxidative double C-H/C-H coupling of phenols with 3-phenylbenzothiophenes: facile access to benzothiophene derivatives. Org Biomol Chem 2021; 19:7156-7160. [PMID: 34378603 DOI: 10.1039/d1ob01208h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An efficient electrooxidative double C-H/C-H coupling of phenols with 3-phenylbenzothiophene has been developed under external oxidant- and catalyst-free conditions. This strategy could enable the highly tunable access to benzothiophene derivatives and exhibited broad substrate generality under mild conditions. The reaction is likely to proceed via the cross-coupling of the p-methoxylphenol radical and the 3-phenylbenzothiophene radical cation.
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Affiliation(s)
- Yuanyuan Yue
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China.
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Wang KK, Xie YX, Li YL, Chen R, Wang ZY. Dearomative [3 + 2] cycloaddition reaction of nitrobenzothiophenes with nonstabilized azomethine ylides. RSC Adv 2020; 10:28720-28724. [PMID: 35520074 PMCID: PMC9055820 DOI: 10.1039/d0ra05687a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 07/28/2020] [Indexed: 12/14/2022] Open
Abstract
A highly diastereoselective dearomative [3 + 2] 1,3-dipolar cycloaddition reaction of nitrobenzothiophenes with an in situ-generated nonstabilized azomethine ylides has been developed. The transformation provides a series of functionalized fused tricyclic benzo[4,5]thieno[2,3-c]pyrroles in good yields (up to 92%) under mild reaction conditions. In addition, a gram-scale experiment and the synthetic transformation of the cycloadduct further highlighted the synthetic utility. The relative configurations of the typical products were clearly confirmed by X-ray crystallography. A simple and efficient method for the synthesis of benzo[4,5]thieno[2,3-c]pyrroles via dearomative [3 + 2] 1,3-dipolar cycloaddition reaction of nitrobenzothiophenes with an in situ-generated nonstabilized azomethine ylides have been developed.![]()
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Affiliation(s)
- Kai-Kai Wang
- School of Pharmacy
- Xinxiang University
- Xinxiang 453000
- P. R. China
| | - Yan-Xin Xie
- School of Chemistry and Materials Engineering
- Xinxiang University
- Xinxiang 453000
- P. R. China
| | - Yan-Li Li
- Medical College
- Xinxiang University
- Xinxiang 453000
- P. R. China
| | - Rongxiang Chen
- School of Pharmacy
- Xinxiang University
- Xinxiang 453000
- P. R. China
| | - Zhan-Yong Wang
- School of Pharmacy
- Xinxiang University
- Xinxiang 453000
- P. R. China
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