【摘要】 <正> 显影抑制剂释放化合物(DIR化合物)包括DIR成色剂和DIR无色化合物两大类.它们都能选择性地抑制显影,从而改善影像的色调,使图像细腻、轮廓鲜明.其中的DIR无色化合物由于不产生染料,故不仅可用于彩色照相材料中的任何乳剂层,亦可用于黑白照相及X光片等材料中. 据专利报道,1-苯基-2-乙酰氧基-2-[(1-苯基-1 H-四氮唑-5-)巯基]乙酮1是一个有效的DIR无色化合物.作者曾试图根据专利方法加以合成,但所得结果与报道完全不同.于是改变合成路线,首先制得醋酸苯甲酰甲酯,溴化后再与1-苯基-5-巯基-四氮唑的钠盐缩合,从而成功地制得了这一化合物.更多还原

【Abstract】 In order to find new developing inhibitor releasing compounds(DIR compounds)which would be adaptable to different circumstances,being based on the idea of adjusting the ease of releasing their developing inhibitors,fifteen DIR compounds are synthesized.All of them contain the structural element of acetophenone as their skeleton and 1-(4’-substituted phenyl)-5-mercaptotetrazoles as developing inhibitors.Among the fifteen compounds forteen are new.更多还原