5-substituted-9-disubstituted amino-12-substituted carbonylbenzo

Details 5-substituted-9-disubstituted amino-12-substituted carbonylbenzo 5-substituted-9-disubstituted amino-12-substituted carbonylbenzo

1985-09-03

1986-08-05

Raymond, Richard L.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D26528

Patent

active

046044612

ABSTRACT:
5-[N-(RCO)-N-R.sup.1 -amino] or (RCOO)-9-(N-R.sup.2 -N-R.sup.3 -amino)-12-(RCO)benzo[a]phenoxazines useful as color formers, particularly in electrochromic recording systems, are prepared by the interaction of the corresponding 5-(N-R.sup.1 -amino)-9-(N-R.sup.2 -N-R.sup.3 -amino)benzo[a]phenoxazinium halide or 9-(N-R.sup.2 -N-R.sup.3 -amino)benzo[a]phenoxazin-5-one 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: 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, Wiley-Interscience, New York (1970), p. 264.
Sloviter, Journal of the American Chemical Society 71, 3360-3362 (1949).
Crossley et al., Journal of the American Chemical Society 74, 573-586 (1952).
Sen et al., Journal of Organic Chemistry 26, 3861-3863 (1961).

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