Patent ID: 6140531
Filing Date: 2000-10-31
Classification: C07C

Abstract:
A method of producing N-1-alkenyl carbonylamino compounds represented by the following general formula, ##STR7## wherein R.sub.1 is the residue of an active hydrogen functional material, n is a number from 1 to a number equal to the number of active hydrogen groups of said active hydrogen functional material, X is selected from O, S and N(R.sub.5), R.sub.5 being hydrogen, hydrocarbyl, or R.sub.5 and R.sub.1 together form a cyclic ring, R.sub.2, R.sub.3 and R.sub.4 are each independently selected from hydrogen, C.sub.1 -C.sub.4 alkyl and C.sub.2 -C.sub.4 alkenyl, said method comprising the steps of:(a) heating 2-alkenoyl azide in the presence of a first inert solvent in a first reaction zone, said first inert solvent being substantially free of active hydrogen functional material;(b) transferring volatile product as it is formed in said first reaction zone of step (a) along with a portion of said first inert solvent into a separate second reaction zone containing a reactive composition comprising active hydrogen functional material having active hydrogen groups selected from the group consisting of hydroxyl, thiol, primary amine, secondary amine and combinations thereof; and(c) withdrawing N-1-alkenyl carbonylamino compound from the second reaction zone.