| 摘要 |
NEW MATERIAL:A compound expressed by formula I {X is -NHCONH2, -NHSO2R<4> (R<4> is lower alkyl); R<1> is H or lower alkyl; R<2> and R<3> are H, lower alkyl, lower alkoxy or halogen; Y is -CH=CH2 or -CH2CH2OSO3H; n is 1-3] in the form of free acid. EXAMPLE:A compound expressed by formula II. USE:A dye for dyeing cellulose and nitrogen-containing fibers yellow. PREPARATION:For example, dyes expressed by formula II are condensed with amines expressed by formula IV in an aqueous medium at 30-40 deg.C to afford a compound expressed by formula V, which is then condensed with a compound expressed by formula VI in an aqueous medium at 90-95 deg.C to provide the aimed compound expressed by formula I.
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