申请人:Ciba-Geigy Corporation
公开号:US04892969A1
公开(公告)日:1990-01-09
Process for the preparation of 1-amino-2-naphthol-4-sulfonic acid by treating 1-hydroxylamino-2-tetralone-4-sulfoniuc acid with an alkali metal pyrosulfite in mineral acid medium in the presence of catalytic amounts of a copper compound. 1-Amino-2-naphthol-4-sulfonic acid is an intermediate for the manufacture of dyes.
通过在矿酸介质中,在存在少量铜化合物的情况下,用碱金属焦亚硫酸盐处理1-羟基氨基-2-四酮-4-磺酸,制备1-氨基-2-萘酚-4-磺酸。1-氨基-2-萘酚-4-磺酸是染料制造的中间体。