Synthesis of Spiro Bis-Indanes via Domino Stetter-Aldol-Michael and Stetter-Aldol-Aldol Reactions: Scope and Limitations
作者:Michel Gravel、Eduardo Sánchez-Larios、Janice Holmes、Crystal Daschner
DOI:10.1055/s-0030-1260031
日期:2011.6
The synthesis of spiro bis-indanes by means of N-heterocyclic carbene (NHC) catalysis is reported. The dimerization of various o-formylchalcone substrates or their combination with phthaldialdehyde derivatives under the catalysis of thiazolium-derived carbenes afforded Stetter-aldol-Michael products and Stetter-aldol-aldol products, respectively. The use of poor Michael acceptors in conjunction with
据报道,通过N-杂环卡宾(NHC)催化合成螺双茚满。在噻唑鎓衍生的卡宾催化下,各种邻甲酰基查尔酮底物的二聚化或它们与邻苯二甲醛衍生物的结合分别提供了Stetter-aldol-Michael产品和Stetter-aldol-aldol产品。将不良的迈克尔受体与N-烷基三唑鎓衍生的催化剂结合使用可提供多种二苯并[8]环戊烯产品。这项工作强调了影响NHC催化的多米诺骨牌反应中竞争途径的多种因素之间的相互作用。 NHC-有机催化-斯特特-物质保护-多米诺反应-迈克尔-奥尔多