Coupling of various substituted phenacyl acetates 1 and diazonium salts 3 was studied. If the phenacyl acetates were substituted by an electronaceptor group such as CN or COOEt 3-substituted phenyl-5-(phenyl-hydrazono)-5H-furan-2-ones 4 were formed. Also synthesis of aza and diaza analogs is described. The compounds were characterized using MS and NMR spectroscopy.

中文翻译：

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乙酸衍生物的苯甲酸酯及其在2-氧代-4-苯基-5-（苯基肼基）-2,5-二氢呋喃-3-衍生物的合成中的应用

研究了各种取代的乙酸苯甲酰乙酸酯1和重氮盐3的偶联。如果苯甲酰甲基乙酸盐是由一个electronaceptor基团如CN或COOEt烷基取代的3-取代的苯基-5-（苯基-亚肼基）-5- ħ -呋喃-2-酮4形成。还描述了氮杂和二氮杂类似物的合成。使用MS和NMR光谱对化合物进行表征。