Bis(methylenedioxyphenyl)imidazoles

Details Bis(methylenedioxyphenyl)imidazoles Bis(methylenedioxyphenyl)imidazoles

1987-04-28

1988-07-26

Schwartz, Richard A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D40514

Patent

active

047601507

ABSTRACT:
A 2,4-5-triphenylimidazole compound having the formula: ##STR1## wherein each of R.sub.1 to R.sub.5 is a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group, a fluorine atom, a chlorine atom, a bromine atom, a trifluoromethyl group or a trichloromethyl group, and A is a group having the formula: ##STR2## wherein R.sub.1 and R.sub.5 are as defined above. These compounds are useful as chlorine sources for photographic image-forming compositions, and as intermediates for dimers of 2,4-5-triphenylimidazoles which are useful as photochromic agents in sunglasses.

REFERENCES:
patent: 3784557 (1974-01-01), Cescon
patent: 4188397 (1980-02-01), Hill
patent: 4460598 (1984-07-01), Lautenschlaeger
Chemical Abstracts, 74:125654a (1971)[Maeda, K., et al., Bull. Chem. Soc. Jap. 1971, 44(2), 533-6].

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