NEW MATERIAL:Monoazo compounds of formula I wherein R1 is (substd.) alkyl, (substd.) aralkyl, cyclohexyl; R2 is H or R1; R3 is H, methyl, sulfo group; R4 is (substd.) alkyl; A is O, -NH-; X1, X2 are each H, Cl, methyl, methoxy, carboxyl, sulfo group; Y is a group of formula II or III; Z is halogen or a group of formula IV or V.
EXAMPLE: Compound of formula VI.
USE: Dyes which dye fibrous materials clear yellow to reddish yellow with excellent fastness to chlorine.
PREPARATION: An aniline derivative of formula VII (wherein R3 is as defined above) is condensed with cyanuric chloride. The resulting condensate is diazotized, then coupled with a pyridone derivative of formula VIII (wherein R1, R2, A are as defined above), and condensed with an aniline compd. of formula IX(wherein X1, X2, Y are as defined above) to produce the compd. of formula I .
HARADA NAOKI
TEZUKA YASUO
