Patent ID: 6891049

Claim:
A process for the preparation of a N-alko-N-alkylamide of the formula: in which: R 1 is C 1-10 -alkyl, cyclo-C 5-7 -alkyl, cyclo-C 5-7 -alkenyl, C 2-10 -alkenyl, aryl, aryl-C 1-3 -alkyl, heteroaryl, heteroaryl-C 1-3 -alkyl or heterocyclyl; and R 2 is C 1-6 alkyl; comprising reacting an ester of the formula: R 1 COOR 3 II, in which R 1 has the meaning indicated above and R 3 is C 1-6 -alkyl, 4-nitophenyl, 2,4-dinitrophenyl, N-succinimido or benzotriazol-1-yl, with hydroxylamine, a hydroxylamine derivative or a hydroxylammonium salt, and alkylating the reaction product in the presence of a phase-transfer catalyst.