Bicyclic cyclopropane derivatives capable of polymerisation and their use in the preparation of dental materials

摘要

Bicyclic cyclopropane derivatives (I) are new. Bicyclic cyclopropane derivatives of formula (I) are new. n+m = 0-8; r = 1-4; R1 = 1-20C alkylene radical (optionally interrupted by O or S), 4-12C cycloaliphatic radical, 4-12C bicyclic radical, 6-14C arylene, 7-20C alkylenearylene radical or absent; R2 = A or A1; A = 1-20C alkyl radical (optionally interrupted by O or S), 4-12C cycloaliphatic radical, 4-12C bicyclic radical, 6-14C aryl, 7-20C alkylaryl radical (all optionally substituted by alkyl, halo, OCH3, OC2H5, vinyl, propenyl, (meth)acryl, COOR3, SiCl3, Si(OR4)3 or mesogenic group); A1 = r-times substituted 1-20C aliphatic radical (optionally interrupted by O or S), 4-12C cycloaliphatic radical, 6-14C aromatic radical or 7-20C aliphatic-aromatic radical (all optionally substituted by alkyl, halo, OCH3, OC2H5, vinyl, propenyl, (meth)acryl, COOR3 or mesogenic group); X = -CO-O-, -CO-NH-, -O-CO-NH- or absent; and Y = CH2, O or S. Provided that (1) when r is 1, then R2 is A; and (2) when r is greater than 1, then R2 is A1.