Highly Substituted 2,3-Dihydroisoxazoles by Et<sub>3</sub>N-Catalyzed Tandem Reaction of Electron-Deficient 1,3-Conjugated Enynes with Hydroxylamines
作者:Xiuzhao Yu、Bo Du、Kai Wang、Junliang Zhang
DOI:10.1021/ol100490y
日期:2010.4.16
reaction of electron-deficient 1,3-conjugated enynes with hydroxylamines was developed which provided rapid, metal-free, and regioselective access to highly substituted multifunctionalized 2,3-dihydroisoxazoles under mild conditions. The reactions of 3-(2-arylethynyl)-4H-chromen-4-ones with hydroxylamines afford β-amino enones under the same reaction conditions.
开发了一种Et 3 N催化的缺电子的1,3-共轭烯炔与羟胺的串联反应,该反应可在温和条件下快速,无金属和区域选择性地接近高度取代的多官能化2,3-二氢异恶唑。在相同的反应条件下,3-(2-芳基乙炔基)-4 H-铬烯-4-酮与羟胺的反应得到β-氨基烯酮。