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-componentheterocyclizations of 5-amino-3-methylisoxazole, cyclohexanedione derivatives, and aromaticaldehydes, 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
Microwave assisted one-pot access to pyrazolo quinolinone and tetrahydroisoxazolo quinolinone derivatives <i>via</i> T3P®-DMSO catalysed tandem oxidative–condensation reaction
作者:Darshini Gowda、Kachigere B. Harsha、Veeresha Gowda Shalini、Shobith Rangappa、Kanchugarakoppal S. Rangappa
DOI:10.1039/d3ra05235d
日期:——
A new approach for the synthesis of two important annulated pyrazolo quinolinone and tetrahydroisoxazolo quinolinone derivatives from multicomponentreactions was achieved by using T3P®-DMSO-catalysed reactions of stable alcohols, cyclic 1,3-dicarbonyl compounds and amino derivatives of phenyl pyrazoles and isoxazole and has been reported for the first time. This reaction occurred via a tandem oxidative-condensation