Patent ID: 6696569
Filing Date: 2004-02-24
Classification: C07D,C07F,C09K,G01N

Abstract:
A compound of the formula III or IV wherein X is selected from substituted or unsubstituted alkyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl groups of 1-20 carbon atoms, substituted or unsubstituted alkyl or aryl carboxyl groups having from 1-20 carbon atoms, tri(C1-C8 alkyl)silyl groups, a SO3âˆ’ group and glycosyl groups, Q is selected from NR6, O and S atoms, each of R2 to R5 is a substituent containing from 1 to 50 atoms selected from C, H, N, O, S, P, Si and halogen atoms and wherein pairs of adjacent groups can be joined together to form a carbocyclic or heterocyclic ring system comprising at least one 5 or 6-membered ring and wherein R6 is an organic group containing from 1 to 50 atoms non-hydrogen atoms selected from C, N, O, S, P, Si and halogen atoms provided that R6 is not a trimethylsilyl group, Z1 and Z2 are independently selected from O and S atoms and R1 is an organic group containing from 1 to 50 non-hydrogen atoms selected from C, N, O, S, P, Si and halogen atoms.