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Kalník M, Gabko P, Bella M, Koóš M. The Bucherer-Bergs Multicomponent Synthesis of Hydantoins-Excellence in Simplicity. Molecules 2021; 26:4024. [PMID: 34209381 PMCID: PMC8271528 DOI: 10.3390/molecules26134024] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/20/2021] [Accepted: 06/24/2021] [Indexed: 12/02/2022] Open
Abstract
Hydantoins and their hybrids with other molecules represent a very important group of heterocycles because they exhibit diverse biological and pharmacological activities in medicinal and agrochemical applications. They also serve as key precursors in the chemical or enzymatic synthesis of significant nonnatural α-amino acids and their conjugates with medical potential. This review provides a comprehensive treatment of the synthesis of hydantoins via the Bucherer-Bergs reaction including the Hoyer modification but limited to free carbonyl compounds or carbonyl compounds protected as acetals (ketals) and cyanohydrins used as starting reaction components. In this respect, the Bucherer-Bergs reaction provides an efficient and simple method in the synthesis of important natural products as well as for the preparation of new organic compounds applicable as potential therapeutics. The scope and limitations, as well as a comparison with some other methods for preparing hydantoins, are also discussed.
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Affiliation(s)
| | | | | | - Miroslav Koóš
- Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 38 Bratislava, Slovakia; (M.K.); (P.G.); (M.B.)
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Fu J, Tsapy Takia IR, Chen P, Liu W, Jiang C, Yao W, Zeng X, Wang Y, Han X. Synthesis of 2-chromanone-fused [3.2.0] bicycles through a phosphine-mediated tandem [3 + 2] cyclization/intramolecular Wittig reaction. Org Chem Front 2021. [DOI: 10.1039/d1qo01013a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A phosphine-mediated tandem [3 + 2] cyclization/intramolecular Wittig reaction of alkynone is described. 2-Chromanone-fused bicyclo[3.2.0]heptenones were synthesized in moderate to high yields with remarkably high regio- and diastereoselectivities.
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Affiliation(s)
- Junfeng Fu
- School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Liuhe Road 318, Hangzhou, 310023, P. R. China
| | - Ingrid Rakielle Tsapy Takia
- School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Liuhe Road 318, Hangzhou, 310023, P. R. China
| | - Peng Chen
- School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Liuhe Road 318, Hangzhou, 310023, P. R. China
| | - Wei Liu
- School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Liuhe Road 318, Hangzhou, 310023, P. R. China
| | - Chengjun Jiang
- School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Liuhe Road 318, Hangzhou, 310023, P. R. China
| | - Weijun Yao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Xiaofei Zeng
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Yongjiang Wang
- School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Liuhe Road 318, Hangzhou, 310023, P. R. China
| | - Xiaoyu Han
- School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Liuhe Road 318, Hangzhou, 310023, P. R. China
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