专利号:US-4235813-A 优先权日:1977-01-11 标 题:Aromatic sulfonamide sulfonyl chloride compounds 发明人:SAWAGUCHI HIROSHI; UEDA HIDEO 权利人:FUJI PHOTO FILM CO LTD 摘要: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) (I) 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) (IIa) (IIb) wherein the two sulfonyl chloride groups are substituted at symmetrical positions on the benzene and the naphthylene ring, with 5-amino-1-naphthol.