An efficient sequential one-pot base mediated C–O and Pd-mediated C–C bond formation: synthesis of functionalized cinnamates and isochromenes
作者:A. Gopi Krishna Reddy、J. Krishna、G. Satyanarayana
DOI:10.1016/j.tetlet.2012.08.023
日期:2012.10
An efficient sequential one-pot intermolecular oxy-Michael addition and intermolecular Heck coupling for the synthesis of functionalized cinnamates is presented. Bulky tert-butyl acrylate was identified as a more suitable Michael acceptor for initial oxy-Michael addition, as it precludes the formation of undesired cross condensed ester. Most importantly, the present method was further divergently extended
提出了一种有效的顺序单锅分子间氧-迈克尔加成反应和分子间Heck偶联反应,用于功能化肉桂酸酯的合成。粗大的丙烯酸叔丁酯被认为是更适合的初始氧-迈克尔加成反应的迈克尔受体,因为它阻止了不希望的交叉缩合酯的形成。最重要的是,本发明的方法进一步扩展到通过顺序一锅法O-烯丙基化和随后的分子内Heck环化成功合成异色酮。