Patent ID: 6900328
Filing Date: 2005-05-31
Classification: C04B,C07D,C08K

Abstract:
1. Process for the preparation of an amine ether of the formula A wherein a is 1 or 2; when a is 1, E′ is E when a is 2, E′ is L; E is a radical of formula (VII) wherein X is phenyl, naphthyl or biphenyl, which is substituted by 1, 2, 3 or 4 D and optionally further substituted by NO D is a group a group C(O)—G 13 or a group C(O)—G 9 —C(O)—G 13 —; G G G G L is alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 8 carbon atoms, cycloalkenylene of 5 to 8 carbon atoms, alkenylene of 3 to 18 carbon atoms, alkylene of 1 to 12 carbon atoms substituted by phenyl or by phenyl substituted by alkyl of 1 to 4 carbon atoms; or is alkylene of 4 to 18 carbon atoms interrupted by COO and/or phenylene; T″ and T′ together form a divalent organic linking group completing, together with the hindered amine nitrogen atom and the quaternary carbon atom substituted by G R R R R R R R R which process comprises reacting a N-oxyl amine of formula B with a compound of formula IV or V in the presence of an organic hydroperoxide and a catalytic amount of copper or a copper compound.