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Maegawa T, Nakamura A, Yamamoto K, Murakami R, Kawashita N, Matsumoto K. One-Pot Synthetic Approaches for the Construction of Isochroman-4-ones and Benzoxazin-3-ones Using O,P-Acetals. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1523-1597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractA method for synthesizing six-membered heterocyclic compounds was developed based on the features of O,P-acetals. Sequential reactions of intramolecular cyclization between the methylene carbon atom of O,P-acetal and its electrophilic functional group (ester or protected carbamate) was followed by Horner–Wadsworth–Emmons (HWE) olefination with various aldehydes. The developed one-pot method yielded isochroman-4-one and benzoxazin-3-one derivatives with an alkylidene moiety.
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Affiliation(s)
| | | | | | - Ryo Murakami
- School of Pharmaceutical Sciences, Kindai University
| | - Norihito Kawashita
- Department of Life Science, School of Science and Engineering, Kindai University
| | - Kouichi Matsumoto
- Department of Chemistry, School of Science and Engineering, Kindai University
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