Patent ID: 6166212
Filing Date: 2000-12-26
Classification: C07D

Abstract:
A process for preparing a compound of formula I ##STR4## wherein G.sub.1 and G.sub.2 are independently alkyl of 1 to 4 carbon atoms, or G.sub.1 and G.sub.2 together are pentamethylene;T is a divalent organic radical required to complete a five- or six-membered ring containing the hindered amine nitrogen atom and two quaternary carbon atoms substituted by G.sub.1 and G.sub.2 ;E is a (b+1) valent alkylene radical of 2 to 18 carbon atoms, an alkenylene radical of 3 to 19 carbon atoms, a cycloalkylene radical of 5 to 12 carbon atoms, a cycloalkenylene radical of 5 to 12 carbon atoms or an alkylene radical of 2 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl of 1 to 4 carbon atoms; andb is 1, 2 or 3; with the proviso that b cannot exceed the number of saturated carbon atoms in E, and when b is 2 or 3, each hydroxyl group is bonded to a different carbon atom in E;which process comprisesreacting a N-oxyl hindered amine of formula II ##STR5## with an alcohol of formula IIIE--(OH).sub.b (III)in the presence of a peroxide or organic hydroperoxide and a catalytic amount of a metal salt or metal-ligand complex.