Thiazolylphthalide compounds

Details Thiazolylphthalide compounds Thiazolylphthalide compounds

1975-11-05

1978-07-11

Robinson, Ellis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260302H, 282 275, 427152, 427153, 428307, 428323, 428327, 428913, 428914, C07D27738

Patent

active

041001699

ABSTRACT:
Thiazolylphthalide compounds of the general formula ##STR1## wherein A represents a p-aminophenyl radical of formula ##STR2## OR A 3-INDOLYL RADICAL OF FORMULA ##STR3## OR A 2-THIAZOLYL RADICAL OF FORMULA ##STR4## EACH OF R.sub.1, R.sub.2, X.sub.1, X.sub.2, R.sub.1 ' and R.sub.2 ' independently represents hydrogen, alkyl of 1 to 12 carbon atoms, alkoxyalkyl of 2 to 8 carbon atoms, cycloalkyl of 5 or 6 carbon atoms, or unsubstituted or substituted benzyl or phenyl, or
Each pair of substituents R.sub.1 and R.sub.2, X.sub.1 and X.sub.2 or R.sub.1 ' and R.sub.2 ', together with the nitrogen atom to which they are attached, independently represents a heterocyclic ring,
Each of Y.sub.1 and Y.sub.1 ' represents hydrogen, alkyl of 1 to 12 carbon atoms, cycloalkyl or 5 or 6 carbon atoms or unsubstituted or substituted benzyl or phenyl,
V.sub.1 represents hydrogen, alkyl of 1 to 12 carbon atoms, alkoxy of 1 to 12 carbon atoms or acyloxy of 2 to 12 carbon atoms,
Z.sub.1 represents hydrogen, alkyl of 1 to 12 carbon atoms, benzyl or .beta.-cyanoethyl,
Z.sub.2 represents hydrogen, alkyl of 1 to 12 carbon atoms or phenyl, and
Wherein the benzene rings B and D can be further substituted by halogen, nitro or by an amino group which is unsubstituted or substituted by alkyl of 1 to 6 carbon atoms.
These thiazolylphthalide compounds are particularly usful as color formers which give strong red, violet, blue or green colorations when they are brought into contact with an electron-accepting co-reactant.

REFERENCES:
patent: 3287381 (1966-11-01), De Cat
patent: 3901918 (1975-08-01), Koga

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