Synthesis of Substituted Isoxazoles and Pyrazoles from<font>α</font>-<font>α</font>-Dioxoketen Dithioacetals Under Solvothermal Conditions
作者:Ebraheem Abdu Musad、K. M. Lokanatha Rai
DOI:10.1080/00397910903459312
日期:2010.11.3
Some new 3,4,5-substituted isoxazoles, 3,4,5 and 1,3,4,5-substituted pyrazoles were prepared by reaction of α,α-oxoketen dithioacetals with hydroxylamine hydrochloride; phenyl hydrazine and hydrazine hydrate respectively under solvothermal conditions involving an ecofriendly method without any environmental pollution. The yields are in the range of 71–91%. The structure of the new compounds were established
α,α-氧代酮二硫缩醛与盐酸羟胺反应制备了一些新的3,4,5-取代异恶唑、3,4,5和1,3,4,5-取代吡唑;苯肼和水合肼分别在溶剂热条件下,涉及一种环保方法,没有任何环境污染。产率在 71-91% 的范围内。新化合物的结构是通过元素分析、IR、1H NMR 和 13C NMR 确定的。