Synthesis 2004(10): 1557-1559  
DOI: 10.1055/s-2004-829102
SHORTPAPER
© Georg Thieme Verlag Stuttgart · New York

Efficient Synthetic Method for β-Enamino Esters Using Ultrasound

Carlos A. Brandt*a, Ana Cláudia M. P. da Silvab, Camila G. Pancoteb, Charles L. Britob, Maria A. B. da Silveirab
a Instituto Butantan, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
Fax: +55(11)38154418; e-Mail: cabrandt@usp.br;
b Departamento de Farmácia, Universidadede São Paulo, São Paulo, SP, Brazil
Further Information

Publication History

Received 8 December 2003
Publication Date:
16 June 2004 (online)

Abstract

β-Keto esters react with a variety of amines in the presence of 0.1 equivalents of acetic acid without any solvents under ultrasound to give good yields of the corresponding β-enamino esters.