| 摘要 |
PURPOSE:To obtain the yellow coupler which has high reactivity and color density per unit weight and is producible at an appropriate production cost by incorporating a specified compd., in the title material contg. a photographic yellow coupler. CONSTITUTION:The compd. shown by formula I is incorporated in the sensitive material. In formula I, R1 and R2 are each an aromatic or a heterocyclic ring group, etc., R3 is hydrogen or halogen atom., etc., R4 is an anti-diffusion group, X1 and X2 are each oxygen atom., etc., Ar1 and Ar2 are each a divalent aromatic group, Y1 and Y2 are each a substituting group substituted at ortho position against the groups X1 and X2, and have the total carbon atoms. of <=10, and are each a group shown by -COO- or -SO2 group, etc., cyano group or halogen atom., Ar1, Ar2, Y1 and Y2 do not contain a photographic useful group. Thus, the yellow coupler which has the high reactivity and the high color density and is producible at an appropriate production cost is obtd. |
