Gordo J, Avó J, Parola AJ, Lima JC, Pereira A, Branco PS. Convenient synthesis of 3-vinyl and 3-styryl coumarins.
Org Lett 2011;
13:5112-5. [PMID:
21916521 DOI:
10.1021/ol201983u]
[Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of 2-hydroxy aldehydes on reaction with 3-butenoic acid afford in a one-pot reaction the corresponding 3-vinylcoumarins. As expected, extension of the delocalized π-electron system accomplished by Heck coupling reactions with aryl halides results in an increased fluorescence of the compounds whose applicability is yet to be established.
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