Thermally Induced Electrocyclic Reaction of Methylenecyclopropane Methylene Diketone Derivatives: A Facile Method for the Synthesis of Spiro[2.5]octa-3,5-dienes
作者:Xiang-Ying Tang、Yin Wei、Min Shi
DOI:10.1021/ol102002f
日期:2010.11.19
Thermally induced electrocyclic reactions of methylenecyclopropane (MCP) methylene diketone derivatives afford a novel method for the synthesis of spiro[2.5]octa-3,5-dienes in moderate to good yields. Applying this methodology in a one-pot manner for the reactions of MCP aldehydes with 1,3-diketones, catalyzed by l-proline, also afforded the corresponding spiro derivatives.
热诱导的亚甲基环丙烷(MCP)亚甲基二酮衍生物的电环反应提供了一种以中等至良好收率合成螺[2.5] octa-3,5-二烯的新颖方法。以一锅法的方式将该方法应用于MCP醛与1-脯氨酸催化的1,3-二酮的反应,也得到了相应的螺环衍生物。