108946-73-2Relevant articles and documents
Cycloalkylidene dyes
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, (2008/06/13)
Cycloalkylidene dyes have the formula STR1 where m is 0 or 1, L is a chemical bond or C1 -C2 -alkylene, which may be substituted, R1 is hydrogen, C1 -C20 -alkyl, which may be phenyl-substituted, substituted or unsubstituted phenyl, naphthyl or C3 -C7 -cycloalkyl, Y is oxygen or two hydrogens, X1 is oxygen and X2 is C1 -C8 -alkanoyloxy, substituted or unsubstituted benzoyloxy, C1 -C6 -trialkylsilyloxy or a radical of the formula OR1 or NR2 R3, where R1 is as defined above and R2 and R3 are identical or different and each is independently of the other C1 -C20 -alkyl, which may be phenyl-substituted, substituted or unsubstituted phenyl, naphthyl, or C3 -C7 -cycloalkyl or R2 and R3 together with the nitrogen atom joining them are saturated heterocyclyl, or else one of R2 and R3 is hydrogen, or X1 and X2 together are a radical of the formula STR2 where Z is oxygen, sulfur or NR2, where R2 is as defined above, and Q is a carbocyclic or heterocyclic ring in which the substituents N and Z occupy adjacent positions.