NEW MATERIAL:A compound shown by the formula I [when X is methoxycarbonyl, Y is methoxycarbonyl, or ethoxycarbonyl, when X is phenylsulfonyl, methylsulfonyl, etc., Y is H, methoxycarbonyl, or ethoxycarbonyl; R is H, methyl, or ethyl; K is group shown by the formula IIWformula V (R1 is H, chloro, methyl, acetylamino, etc.; R2 is H, chloro, methoxy, etc.; R3 and R4 are H, 1W4C alkyl, aryl, etc., and R3 and R4 are not H at the same time; R5 is chloro, or methyl; R6 is H, methyl, or phenyl; R3 is H, 1W4C alkyl, etc.)].

EXAMPLE: A compound shown by the formula VI.

USE: Dye for dyeing hydrophobic fiber, especially polyester, triacetate fiber in clear purple, red, yellow, etc. with improved fastness to light, heat, and wetting. Low white polluting properties.

PREPARATION: An aniline derivative shown by the formula VII is diazotized, and coupled with a coupling agent shown by the formula KH.