| 摘要 |
NEW MATERIAL:A compound expressed by formula I (R1 is 1-8C alkyl; R2 is 1-4C alkyl). EXAMPLE:A compound expressed by formula II. USE:A dye for dyeing a synthetic fiber such as polyamide fiber, polyester fiber, etc., semisynthetic fiber such as diacetate, etc., or mixed fiber material of the above-mentioned fiber with a natural fiber, especially polyester fiber or mixed fiber of the polyester fiber and cellulose fiber in fresh and reddish blue. PREPARATION:A compound expressed by formula III (X is halogen; Y is halogen or cyano) is reacted with a metal cyanide in a polar solvent to provide the compound expressed by formula I.
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