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据报道成黄成色剂2-十六烷氧基苯甲酰乙酰基-(2′-氯-5′-苯胺磺酰基)苯胺(1)的氯化一般发生在β-二酮的亚甲基碳原子上.我们发现在氯仿中,1用二氯硫酰氯化却发生在苯醚长链烷氧基的β原子上,生成化合物2.2在十八烷基化硅胶为填充剂(5μm)的高压液相色谱图中仅显示一个单峰(以甲醇为流动相).
It has been reported that the chlorination of the yellow coupler 2-hexadecyloxybenzoyl- (2’-chloro-5’-anilinosulfonyl) aniline (1) generally occurs in the methylene Carbon atom, we found that the chlorination of 1 with dichlorosulfonyl chloride occurs on the beta atom of the long-chain phenoxy ether to yield compound 2.2 at a high pressure of octadecylated silica gel (5 μm) Only one single peak (methanol in mobile phase) is shown in the LC.