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The Selection of Catalysts for Metal Carbene Transformations. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2016. [DOI: 10.1016/bs.adomc.2016.07.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Thumar N, Wei Q, Hu W. Recent Advances in Asymmetric Metal-Catalyzed Carbene Transfer from Diazo Compounds Toward Molecular Complexity. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2016. [DOI: 10.1016/bs.adomc.2016.08.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Allegretti PA, Huynh K, Ozumerzifon TJ, Ferreira EM. Lewis Acid Mediated Vinylogous Additions of Enol Nucleophiles into an α,β-Unsaturated Platinum Carbene. Org Lett 2015; 18:64-7. [PMID: 26652926 DOI: 10.1021/acs.orglett.5b03246] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A variety of substituted indoles and benzofurans are accessed via a platinum catalyzed annulation and vinylogous addition of enol nucleophiles. Several β-dicarbonyl compounds participate in the reaction, as do α-nitro and α-cyano carbonyl species. Subjecting the indole products to acidic conditions results in the formation of fused heterocycles.
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Affiliation(s)
- Paul A Allegretti
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Khoi Huynh
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Tarik J Ozumerzifon
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Eric M Ferreira
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
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Zhan G, Shi ML, He Q, Du W, Chen YC. [4 + 3] Cycloadditions with Bromo-Substituted Morita-Baylis-Hillman Adducts of Isatins and N-(ortho-Chloromethyl)aryl Amides. Org Lett 2015; 17:4750-3. [PMID: 26359687 DOI: 10.1021/acs.orglett.5b02279] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Efficient construction of a challenging aza-spirocycloheptane oxindole scaffold is reported through an unprecedented [4 + 3] cycloaddition reaction with bromo-substituted Morita-Baylis-Hillman adducts of isatins and N-(ortho-chloromethyl)aryl amides. Both reactive intermediates, the allylic phosphonium ylides and aza-o-quinone methides, were in situ generated, chemoselectively facilitated by a Lewis base and Brønsted base, respectively.
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Affiliation(s)
- Gu Zhan
- 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
| | - Ming-Lin Shi
- 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
| | - Qing He
- 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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