Fluorine free titanocenes and their application

摘要

Fluorine-free titanocene compounds of the formula I or II in which both R1 preferably independently of one another denote cyclopentadienyl(-) which is unsubstituted or substituted by alkyl, alkoxy or -Si(R2)3 and both R2 denote, in particular, alkyl, Q denotes a radical Z represents -NR10-, -O- or -S-, Y denotes Cl, Br, I, CN, SCN, -O-CO-CH3, -O-CO-phenyl, or -O-SO2-CH3, n is 1 or 2 m is 0 or 1, where the total of n and m must be 2, R3, R4 and R5 in particular independently of one another denote hydrogen, Cl, alkyl, cycloalkyl, adamantyl, phenyl, pyrryl, or biphenylyl, these radicals being unsubstituted or substituted by alkyl, Cl, alkylthio, -NR8R9, phenyl, phenylthio or C1-C10-alkoxy, or R3, R4 and R5 denote alkenyl, alkoxy, cycloalkoxy, phenoxy, benzyloxy, tetrahydrofurfuryloxy, alkylthio, cycloalkylthio, benzylthio or phenylthio, but R3 and R4 do not simultaneously denote hydrogen, and, if q denotes a pyrimidyl radical, at least one radical R3 or R4 denotes alkoxy, cycloalkoxy, phenoxy, benzyloxy, tetrahydrofurfuryloxy or alkenyloxy, and, in the event that Z is -NR10-, R3 and R4 denote Cl, Br or I, both R6 independently of one another denote alkyl or alkenyl, or both R6 together with the n atom to which they are bonded form a morpholino radical, R7 represents alkyl, cycloalkyl, or phenyl, R8 denotes phenyl or, in the alpha -position, tertiary C4-C6-alkyl, R9 denotes, in particular, hydrogen, alkyl, cycloalkyl, phenyl or a radical where furthermore in -N(R9)2 both R9 are identical or different and the two R9 together with the N atom to which they are bonded can form a 5- or 6-membered heterocycle which, besides the N atom, can additionally contain other N, O or S atoms, R10 has the meanings of R9 and additionally is, in particular, unsubstituted phenyl or phenyl which is substituted by Cl, C1-C12-alkyl, C1-C10-alkoxy, C1-C8-alkylthio, phenylthio, morpholino or -N(C1-C4-alkyl)2, X is -O-, -S-, methylene or ethylene, A represents C1-C12-alkylene, or -X-A-X- represents a direct bond, are suitable as photoinitiators for the photopolymerisation of compounds which have ethylenically unsaturated double bonds.