Resumo

MARTINS, Sérgio M. A.; BRANCO, Paula C. S.  e  PEREIRA, António M. D. R. L.. An efficient methodology for the synthesis of 3-styryl coumarins. J. Braz. Chem. Soc. [online]. 2012, vol.23, n.4, pp. 688-693. ISSN 0103-5053.  http://dx.doi.org/10.1590/S0103-50532012000400014.

Regioselective and highly efficient Heck arylation of 3-vinyl-6,7-dimethoxycoumarin has been developed to afford 3-styryl coumarins in good to very high yields. The increase in conjugation reflects on the absorbance of the synthesized compounds revealing all pronounced bathochromic shifts and hyperchromic effects.

Palavras-chave : 3-vinyl coumarin; 3-styryl coumarin; Heck reaction; palladium; fluorescent dyes.