Abstract
Alkyl esters of several amino acids and acids were prepared using triphosgene [t richloromethyl carbonate, TPA (2)].
ACKNOWLEDGMENT
We gratefully acknowledge support for this project by Consejo Nacional de Ciencia y Tecnologia (CONACyT, GRANT No. 28488-E) and Consejo Nacional de Educación Tecnoló gica (COSNET, GRANT No. 623.97-P). S. Heredia thanks CONACyT and A. Ochoa thanks COSNET for fellowships. The authors are indebted to R. Somanathan and L. H. Hellberg for encouragement.