Versatile 2-aminothiazoles, building blocks for highly functionalised heterocycles
作者:Gerd Kaupp、Fathy A. Amer、Mohamed Abbas Metwally、Ehab Abdel-Latif
DOI:10.1002/jhet.5570400603
日期:2003.11
reactions of quantitatively available 4-phenyl- and 4-(4-antipyrinyl)-2-aminothiazole [“4-antipyrinyl-” is used as a short-term for “4-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1-H-pyrazol-4yl)-”] with chloroacetyl chloride, acetic anhydride, ethyl cyanoacetate and carbon disulphide are reported. The products are transformed further by Knoevenagel condensations and coupling reactions with aromatic diazonium
定量可用的4-苯基-和4-(4-antipyrinyl)-2-氨基噻唑[“ 4-antipyrinyl-”的反应用作“ 4-(1,5-二甲基-3-氧代-据报道有2-苯基-2,3-二氢-1-H-吡唑-4-基)-与氯乙酰氯,乙酸酐,氰基乙酸乙酯和二硫化碳。通过Knoevenagel缩合反应以及与芳族重氮盐的偶联反应进一步转化产物。后者同时存在于噻唑环和活性亚甲基位点。根据密度泛函理论在B3LYP / 6-31G *水平上的计算研究了这些产物的互变异构现象。