Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1978-11-02
1981-03-31
Berch, Mark L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
252300, 430517, 430520, 430560, 2602455, 260338, 548207, 544 33, 544 62, 546198, 546 95, 544133, 544135, 544368, C07D45502, C07D27506, C07D27902, C07D41710
Patent
active
042594936
ABSTRACT:
The present invention is concerned with novel 3,3-disubstituted-sulfam(na)phthaleins wherein one of the 3-substituents is derived from a 1-naphthol or a phenol substituted in the 2-position with a perhalomethylcarbinol group and wherein the N atom of the sulfam(na)phthalein ring is substituted with ##STR1## wherein R is alkyl or aryl or with ##STR2## wherein Y is hydrogen or an electron-withdrawing group, which compounds find utility, e.g., as pH-sensitive indicator dyes or as photographic light-screening dyes.
REFERENCES:
Abramovitch, R., J. Chem. Soc., Perkin Trans I, 1974 (22) p. 2589.
Mustafa, A., J. Chem. Soc. (1952), p. 1339.
Dutt, J. Chem. Soc., 121, p. 2389 (1922).
Beilstein, "Handbuch der Organischen Chemie, vol. 27, p. 534.
Suzuki, "Electron Absorption Spectra and Geometry of Organic Molecules", 1967, p. 406.
Breslow, "Organic Reaction Mechanism" 1969, pp. 114-116.
Berch Mark L.
Campbell Sybil A.
Polaroid Corporation
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