Patent ID: 6281353
Filing Date: 2001-08-28
Classification: C07D

Abstract:
A process for manufacturing a compound of formula I ##STR7##wherein:R.sup.1 is lower alkyl;R.sup.2 is hydrogen;, orR.sup.1 and R.sup.2 are together --(CH.sub.2).sub.n -- and n is 2 or 3;R.sup.3 is halogen, lower alkyl, lower alkoxy and m is 0, 1 or 2; andR.sup.4 is hydrogen or lower alkyl:comprising, reacting a compound of formula II ##STR8##with a compound of formula III ##STR9##wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, m and n have the meanings set forth above, and said reaction between said compound of formula II and said compound of formula III takes place in the presence of an apolar solvent.