Patent ID: 7354987

Claim:
Process for the preparation of a compound of formula I: where: X is equal to NR 5 ; R 4 is equal to a C 1 -C 12 alkyl group, aryl group, aralkyl group or cycloalkyl group; R 1 , R 2 , R 3 , R 5 are eaual to an H, alkyl, cycloalkyl, arvl or heterocyclic group; where R 1 , R 2 , and R 5 or R 1 , R 2 , and R 3 may together form a heterocyclic group, the process comprising reacting an amino compound and an alkanol hemiacetal of the following general formula (II): where R 4 and R 6 are a C 1 -C 12 alkyl group, aryl group, aralkyl group or cycloalkyl group, in which process alkanol is released.