Photochromic benzothioxanthone oxides, process for their prepara

Details Photochromic benzothioxanthone oxides, process for their prepara Photochromic benzothioxanthone oxides, process for their prepara

1991-12-30

1993-01-05

Elmore, Carolyn

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 24, C07D33516

Patent

active

051772183

ABSTRACT:
Compounds of formula I or III or mixtures thereof ##STR1## wherein R is unsubstituted C.sub.6 -C.sub.14 aryl or C.sub.6 -C.sub.14 aryl which is substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.12 alkylthio, phenyl, benzyl, --CN, --CF.sub.3, halogen or --COOR.sub.3, x is 1 or 2, and R.sub.1 is H, linear or branched C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkenyl or C.sub.2 -C.sub.12 alkynyl, C.sub.7 -C.sub.16 aralkyl, C.sub.8 -C.sub.16 alkaralkyl, --CH.sub.2 COOR.sub.3 or C.sub.1 -C.sub.12 acyl, wherein R.sub.3 is H, C.sub.1 -C.sub.18 alkyl, cyclohexyl, cyclopentyl, phenyl, C.sub.1 -C.sub.12 alkylphenyl, benzyl or C.sub.1 -C.sub.12 alkylbenzyl, are reversible photochromic systems which can be used for contrast formation, light absorption or for the reversible optical storage of information.

REFERENCES:
patent: 4681950 (1987-07-01), Fischer et al.
Y. Gerasimenko et al., Zhurnal Organicheskoi Khimi, vol. 16, No. 9, pp. 1938-1945 (1980).
Y. Gerasimenko et al., Chem. Abstract vol 94:47012m, p. 548 (1981).
Chem Abstract vol. 100:8573t, p. 100 (1984).
Y. Gerasimenko et al., Zhurnal Organicheskoi Khimi, vol. 7, No. 11 pp. 2413-2415 (1971).

Affiliated with

Also associated with

Rating

Photochromic benzothioxanthone oxides, process for their prepara does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photochromic benzothioxanthone oxides, process for their prepara, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photochromic benzothioxanthone oxides, process for their prepara will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2391566