Aromatic sulfonamide sulfonyl chloride compounds

Details Aromatic sulfonamide sulfonyl chloride compounds Aromatic sulfonamide sulfonyl chloride compounds

1979-03-23

1980-11-25

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

430223, 260198, C07C14370

Patent

active

042358132

ABSTRACT:
An aromatic sulfonamide sulfonyl chloride, useful as an intermediate in the preparation of cyan dye-releasing redox compounds for diffusion transfer photographic materials, represented by the following general formula (I) ##STR1## wherein A represents a divalent benzene nucleus or a divalent naphthalene nucleus, in which in each nucleus the bonding thereto is symmetrical, and a method for the synthesis thereof comprising reacting an aromatic disulfonyl chloride represented by the formula (IIa) or (IIb) ##STR2## wherein the two sulfonyl chloride groups are substituted at symmetrical positions on the benzene and the naphthylene ring, with 5-amino-1-naphthol.

REFERENCES:
patent: 2362598 (1944-11-01), Vittum et al.
patent: 3942987 (1976-03-01), Landholm et al.
patent: 4042393 (1977-08-01), Wada et al.

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