Behavior of 5-amino-3-methylisoxazole in multicomponent heterocyclizations with carbonyl compounds under thermal heating and non-classical conditions
作者:Elena A. Muravyova、Volodymyr V. Tkachenko、Sergey M. Desenko、Yulia V. Sen’ko、Thomas J.J. Müller、Elena V. Vashchenko、Valentin A Chebanov
DOI:10.3998/ark.5550190.p008.093
日期:——
Three-component heterocyclizations of 5-amino-3-methylisoxazole, cyclohexanedione derivatives, and aromatic aldehydes, including salicylic aldehydes, are studied under conventional thermal heating, microwave irradiation and ultrasonication. A dependence of the direction of the reaction on the structure of the aldehyde and the reaction conditions was found, which allowed selective synthesis of 6,7,8
在常规热加热、微波辐射和超声处理下研究了 5-氨基-3-甲基异恶唑、环己二酮衍生物和芳香醛(包括水杨醛)的三组分杂环化。发现反应方向依赖于醛的结构和反应条件,这使得选择性合成 6,7,8,9-四氢异恶唑并[5,4-b]喹啉-5(4H)-酮和 2,3,4,9-四氢-1H-xanthen-1-ones。讨论了反应机制的关键阶段。