Synthesis of 1,2,3-Triazole Substituted Isoxazoles<i>via</i>Copper (I) Catalyzed Cycloaddition
作者:P. Venkata Ramana、A. Ram Reddy
DOI:10.1002/jhet.837
日期:2012.5
containing N‐substituted 1,2,3‐triazoles (V) starting from various benzaldehydes (I) is reported. Benzaldehydes undergo oximation with hydroxylamine hydrosulfate. Later, chlorination followed by condensation with methylacetoacetate and the hydrolysis of the resulting ester afforded respective carboxylic acid (II), which on chlorination with PCl5 gave the corresponding acid chlorides (III). The coraboxylic
据报道,从各种苯甲醛(I)开始,合成了一系列包含N-取代的1,2,3-三唑(V)的3,5-二取代的异恶唑-4-羧酸酯。苯甲醛与羟胺硫酸氢盐进行肟化反应。随后,氯化,然后与乙酰乙酸甲酯缩合,并将所得的酯水解,得到相应的羧酸(II),其在用PCl 5氯化后得到相应的酰氯(III)。炔丙基化时的钴氧酰氯(III)得到炔丙基酯(IV),点击反应这些得到标题化合物(V)。