| 摘要 |
NEW MATERIAL:The compound of formula [n is 0 or 1; m is 1 or 2; R1 is (substituted) alkyl; R2-R4 are H, alkyl, alkoxy, OH, (substituted) amino or halogen; R2 and R3, R3 and R4 or R2 and R4 may together form a condensed 6-membered ring; Z1 and Z2 are atomic group necessary for forming a 5-6- membered ring; L1 and L2 are (substituted) methine]. EXAMPLE:The compound of formula II. USE:Dye for filter or photosensitive material. A sensitizing pigment. PREPARATION:The objective compound can be produced by reacting a heterocyclic quaternary salt derivative having active methyl group with a 4-methyl-2- thiocoumarin derivative and condensing the resultant intermediate A with the intermediate B. |
