3-substituted carbonyloxy-7-disubstituted amino-10-substituted c

Details 3-substituted carbonyloxy-7-disubstituted amino-10-substituted c 3-substituted carbonyloxy-7-disubstituted amino-10-substituted c

1985-09-03

1986-08-05

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D26528

Patent

active

046044582

ABSTRACT:
3-(R-Carbonyloxy)-7-(N-R.sup.1 -N-R.sup.2 -amino)-10-(RCO)-phenothiazines useful as color formers, particularly in electrochromic recording systems, are prepared by the interaction of the corresponding 7-(N-R.sup.1 -N-R.sup.2 -amino)phenothiazin-3-one with a reducing agent to obtain the corresponding leuco compound and subsequently interacting the leuco compound with about two molecular proportions of an acylating agent.

REFERENCES:
patent: 2909520 (1959-10-01), Buc
patent: 3704298 (1972-11-01), Zinnes et al.
patent: 4309255 (1982-01-01), Gendler et al.
patent: 4496584 (1985-01-01), Fujii et al.
Buehler et al, Survey of Organic Chemistry, 1970, Wiley-Interscience, New York, p. 264.
Mariga & Oda, Kogyo Kagaku Zasshi, 67(7), 1050-4 (1964) (C.A. 62 2852b).

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