Photochrome spiroindoline-oxazines

Details Photochrome spiroindoline-oxazines Photochrome spiroindoline-oxazines

1989-05-01

1990-09-25

Raymond, Richard L.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D49810

Patent

active

049594710

ABSTRACT:
Disclosed is a photochrome compound having a spirooxazine structure in a, as such known manner.
In accordance with the present invention conjugated diazole-napthoxazine or oxazole-, thiazole, benzoxazole-or benzthiazole systems are added to the basic structure.
Improved absorption in the wavelength range .alpha. than 350 nm as well as improved migration properties are yielded by this means.

REFERENCES:
patent: 4634767 (1987-01-01), Hoelscher et al.

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