Patent ID: 6271405
Filing Date: 2001-08-07
Classification: C07C

Abstract:
A process for preparing a compound of formula III ##STR18##comprising:(1) acylating a compound of formula I ##STR19##to provide a corresponding compound of formula II; and ##STR20##(2) alcoholyzing a compound of formula II to provide a corresponding compound of formula III;wherein R.sub.1 and R.sub.2 are each (C.sub.1 -C.sub.10)alkyl, (C.sub.2 -C.sub.10)alkenyl, (C.sub.2 -C.sub.10)alkynyl, (C.sub.6 -C.sub.10)aryl, (C.sub.1 -C.sub.10)alkoxy, or (C.sub.6 -C.sub.10)aryl(C.sub.1 -C.sub.10)alkyl;any alkyl, alkoxy, alkenyl, alkynyl, or aryl of R.sub.1 and R.sub.2 can optionally be substituted with one or more halo, nitro, cyano, trifluoromethyl, hydroxy, SR or NRR; andeach R is independently H or (C.sub.1 -C.sub.10)alkyl.