Patent ID: 7321048
Filing Date: 2008-01-22
Classification: C07B,C07C,C07F

Abstract:
1. A method of purifying an organometallic compound comprising i) providing a mixture comprising a) an organometallic compound chosen from unsymmetrical dimethyl hydrazine and a compound of the formula R 1 R 2 n−1 M 1 wherein R 1 is chosen from (C 1 -C 20 )alkyl, (C 2 -C 12 )dialkylamino, (C 1 -C 12 )alkylamino(C 1 -C 12 )alkyl, di(C 1 -C 20 )alkylamino(C 1 -C 12 )alkyl, (C 2 -C 20 )alkenyl, (C 2 -C 20 )alkynyl and aryl; each R 2 is independently chosen from hydrogen, (C 1 -C 20 )alkyl, (C 2 -C 12 )dialkylamino, (C 1 -C 12 )alkylamino(C 1 -C 12 )alkyl, di(C 1 -C 20 )alkylamino(C 1 -C 12 )alkyl, (C 2 -C 20 )alkenyl, (C 2 -C 20 )alkynyl, aryl and halogen; M 1 is a Group IIA to Group VIA metal; and n is the valence of M 1 ; and b) a purifying composition comprising an alkyl-metal compound of the formula R 3 x R 4 3-x M 2 wherein R 3 is a (C 1 -C 20 )alkyl; each R 4 is independent chosen from hydrogen and halogen; M 2 is a Group IIIA metal; and x is an integer from 1-3; and a catalyst compound; and ii) heating the mixture.