Patent ID: 7687657
Filing Date: 2010-03-30
Classification: C07F,G03F

Abstract:
1. A process for the preparation of acylphosphanes or bisacylphosphanes of formula I wherein n and m are each independently of the other 1 or 2; R linear or branched C halogen or CN, or  —OR R R R R R —SO —PO(OC benzophenonyl, thioxanthonyl; or R halogen or CN, or —OR —NR —SO phenyl-C or R or R R R R —CH 2 —COO-Z-OCO—CH 2 — wherein Q is a single bond, —CH Z is C R or —CH═CH-phenyl or —C(C R the process comprises the steps a) contacting elemental phosphorous or P(Hal) b) optionally adding an alcohol, optionally in the presence of a catalyst or an activator to obtain metal dihydrogen phosphides MePH c) subsequent acylation reaction with m acid halides of formula III or m carboxylic acid esters of formula IV or, in case that in formula I m=1, with one carboxylic ester of formula IV followed by one acid halide of formula III or vice versa, wherein R is the residue of an alcohol and R d) alkylation reaction in case of m=2, subsequent reaction with an electrophilic agent R (R wherein R 1 and R 10 are as defined above, R 20 is C 1 -C 8 alkyl,, C 1 -C 8 perfluoroalkyl, aryl or C 1 -C 4 -alkylaryl, R 21 is H or C 1 -C 8 alkyl; R 22 is C 1 -C 16 alkyl or C 2 -C 16 alkenyl substituted once or more than once by halogen —OR 10 , —NR 12 R 13 , —SR 10 , —OCO—R 10 , —OCO-Hal, —COO—R 10 , —N(R 12 )—CO—R 10 , —N(R 12 )—CO—OR 10 , —N(R 12 )—CO—NR 12 R 13 , —N(R 12 )—CO-Hal, —CO—NR 12 R 13 , —SO 2 —R 10 , —SO 2 —OR 10 , —SO 2 —NR 12 R 13 , —CH═CH—CO—OR 10 , —CH═CH-phenyl, —C(C 1 -C 4 alkyl)=C(C 1 -C 4 alkyl)-CO—OR 10 or —C(C 1 -C 4 alkyl)=C(C 1 -C 4 alkyl)-phenyl, phenyl-C 1 -C 4 alkyl, phenyl, naphthyl, biphenyl, C 5 -C 12 cycloalkyl or a 5- or 6-membered O-, S- or N-containing heterocyclic ring; R  (R  wherein R  (R  wherein R