Patent ID: 8217170

Claim:
A process for the preparation of a sterically hindered amine compound of formula I wherein the linking group R is where R 11 is nitrogen which is attached to a triazine ring, R 1 , R 2 , R 3 and R 4 , independently of each other, are C 1 -C 8 alkyl or C 1 -C 5 hydroxyalkyl, or R 1 and R 2 together with the carbon atom they are attached to are C 5 -C 12 cycloalkyl, or R 3 and R 4 together with the carbon atom they are attached to are C 5 -C 12 cycloalkyl and R 5 , R 6 , R 7 , R 8 and R 9 , independently of each other, are hydrogen, C 1 -C 8 alkyl, C 2 -C 8 alkenyl, unsubstituted or C 1 -C 4 alkyl, C 1 -C 4 alkoxy or halogen substituted C 5 -C 12 aryl; C 1 -C 4 haloalkyl, cyano, nitro, halogen or —COOR 10 ; or R 7 and R 8 together may form a chemical bond, where R 10 is C 1 -C 12 alkyl, C 5 -C 12 cycloalkyl, C 7 -C 9 phenylalkyl or phenyl, which process comprises reacting a secondary sterically hindered amine compound of formula II wherein R, R 1 , R 2 , R 3 and R 4 are as defined above, with a compound of formula III wherein R 5 , R 6 , R 7 , R 8 and R 9 are as defined above, in the presence of palladium(tetrakistriphenylphosphine) catalyst.