SYNTHESIS OF DAR YELLOW COUPLER

doi:10.7517/j.issn.1674-0475.2004.01.28

Abstract

Abstract: 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.

Key words: DAR coupler, DAR yellow coupler, synthesis

CLC Number:

O626.25

LIU Yu-ting, LU Feng, ZOU Jing, ZHANG Da-de, YAO Zu-guang. SYNTHESIS OF DAR YELLOW COUPLER[J]. Imaging Science and Photochemistry, 2004, 22(1): 28-32.

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SYNTHESIS OF DAR YELLOW COUPLER

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