DAR黄成色剂的合成

SYNTHESIS OF DAR YELLOW COUPLER

本文以α 新戊酰基 2 氯 5 [3 (2,4 二特戊基苯氧基)丁酰胺基]乙酰苯胺为母体,以2,5 二巯基 1,3,4 噻二唑为吸附基团,分别以1 甲酰基 2 (4 氨基)苯肼,1 乙酰基 2 (4 氨基)苯肼和1 三氟乙酰基 2 (4氨基)苯肼为增强基团合成了3种DAR黄成色剂.并通过IR,1HNMR,MS确证了它们的结构.

DAR couplers(Development Accelerator Releasing Coupler) are contained in the light-sensitive silver halide photographic material.They are represented by the general formula C_p-L-A in which 'C_p' represents a coupler residue.'A' represents a development accelerating functional group and 'L' represents a divalent linking group.In this paper,three DAR yellow couplers are synthesized:'C_p' is α-pivalyl-2-chlor-5-acetanilide;'L' is 2,5-dimercapto-1,3,4-thiociazol;'A' are 1-formyl-2-(4-aminophenyl)hydrazide,1-acetyl1-2-(4-aminophenyl)hydrazide and 1-trifluoroacety1-2-(4-aminophenyl)hydrazide.The structures of couplers are identified by IR,~1HNMR,and MS.