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Convenient synthesis of 3-vinyl and 3-styryl coumarins
Authors:Gordo Joana  Avó João  Parola A Jorge  Lima João C  Pereira António  Branco Paula S
Affiliation:REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, Portugal.
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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