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超声波辐射固-液相转移催化下2,5-二取代-1,3,4-噻二唑和N-取代二酰肼的一锅法合成研究
A One-Pot Synthesis of 2,5-Disubstituted-1,3,4-thiadiazoles and N-Substituted Dihydrazides under Ultrasonic Irradiation and Solid-Liquid Phase Transfer Catalysis
【摘要】 采用超声波辐射与相转移催化联用技术,4-甲基苯氧乙酰氯(4)和硫氰酸铵反应得到中间体芳氧乙酰基异硫氰酸酯5,不经分离直接与芳氨基乙酰肼2反应,一锅法制得了7个新的2,5-二取代-1,3,4-噻二唑7a~7g和9个新的N-取代二酰肼8a~8i,并利用IR,1H NMR,13C NMR,MS谱和元素分析对其结构进行了表征.
【Abstract】 A one-pot synthesis of 2,5-disubstituted-1,3,4-thiadiazoles 7a~7g and N-substituted dihy- drazides 8a~8i was performed by the reaction of 4-methyl phenoxyacetyl chloride 4 with ammonium thio- cyanate under ultrasonic irradiation and solid-liquid phase transfer catalysis,and subsequent irradiation in the presence of N-arylglycine hydrazides 2.The structures of the new compounds were characterized by IR, 1H NMR,13C NMR,MS spectra and elemental analysis.
【关键词】 1,3,4-噻二唑;
二酰肼;
一锅法合成;
超声波辐射;
相转移催化;
【Key words】 1,3,4-thiadiazole; dihydrazide; one-pot synthesis; ultrasonic irradiation; phase transfer catalysis;
【Key words】 1,3,4-thiadiazole; dihydrazide; one-pot synthesis; ultrasonic irradiation; phase transfer catalysis;
- 【文献出处】 有机化学 ,Chinese Journal of Organic Chemistry , 编辑部邮箱 ,2008年01期
- 【分类号】TQ25
- 【被引频次】3
- 【下载频次】314