Phase-Transfer Catalyzed Michael Addition Reaction Using a New C2-Symmetric Quaternary Ammonium Salt Derived From l-Proline
作者:Ce Su、Yi-Ming Xie、Qing-Tang Zhang
DOI:10.1007/s10562-011-0595-1
日期:2011.7
A new C2-symmetric quaternary ammonium salt easily prepared from l-proline, was developed and used as an efficient phase-transfer catalyst (PTC) in Michael addition reaction of various active methylene compounds to aromatic enones. Malonate esters and acetylacetone were reacted smoothly with various α, β-unsaturated ketones in good to excellent yields, the reaction conditions were optimized and the
开发了一种易于从 l-脯氨酸制备的新型 C2 对称季铵盐,并将其用作各种活性亚甲基化合物与芳香烯酮的迈克尔加成反应中的有效相转移催化剂 (PTC)。丙二酸酯和乙酰丙酮与各种α,β-不饱和酮以良好的收率顺利反应,优化了反应条件,并研究了底物范围。因此,在相转移催化条件下建立了一种实用的迈克尔加成方法,该方法具有催化剂易得、反应条件温和、反应时间短、后处理简单等优点。