3-amido-7-disubstituted amino-10-carbonylphenothiazines

Details 3-amido-7-disubstituted amino-10-carbonylphenothiazines 3-amido-7-disubstituted amino-10-carbonylphenothiazines

1986-04-03

1987-03-24

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544103, C07D27930

Patent

active

046526439

ABSTRACT:
3-(N--R.sup.2 --N-Acylamino)-7-(N--R.sup.3 --N--R.sup.4 -amino)-10-acylphenothiazines and phenoxazines useful as color formers, particularly in electrochromic recording systems, are prepared by the interaction of the corresponding 3-(N--R.sup.2 -amino)-7-(N--R.sup.3 --N--R.sup.4 -amino)phenothiazinium or phenoxazinium halide with a reducing agent to obtain the corresponding leuco compound and subsequently interacting the leuco compound with at least two molecular proportions of an acylating agent.

REFERENCES:
patent: 2909520 (1959-10-01), Buc
patent: 4309255 (1982-01-01), Gendler et al.
Mariga & Oda, "Color Reaction of Some Derivatives of Aminophthalide and Acylleucomethylene Blue Derivatives"-Kogyo Kagaku Zasshi 67 (7) 1050-4, (1964), (C.A. 62 2852b).
Smets & Simionescu, "Polymer Induced Aggregation of Dye Molecules", Makromolecular Chemistry, 1977, 198(9), 2719-23 (C.A. 87 186052t).

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