Patent ID: 6022989
Filing Date: 2000-02-08
Classification: C07C

Abstract:
A process for the preparation of a compound of the formula: ##STR7## or a salt thereof, wherein R is selected from the group consisting of hydrogen, loweralkyl, alkenyloxy, alkoxy, alkoxyalkoxy, thioalkoxy and dialkylamino and R.sub.1 is selected from the group consisting of hydrogen, loweralkyl, alkoxyalkyl, hydroxyalkyl, cycloalkyl, cycloalkylalkyl, aryl and arylalkyl, comprising reacting a compound of the formula: ##STR8## wherein R is as defined above and X is a leaving group with a compound of the formula: ##STR9## wherein R.sub.1 is as defined above, in the presence of a base at a pH of from about 9.2 to about 10.5.