Isoindolinones as Michael Donors under Phase Transfer Catalysis: Enantioselective Synthesis of Phthalimidines Containing a Tetrasubstituted Carbon Stereocenter
作者:Francesco Scorzelli、Antonia Di Mola、Laura Palombi、Antonio Massa
DOI:10.3390/molecules20058484
日期:——
Readily available chiral ammonium salts derived from cinchona alkaloids have proven to be effective phase transfer catalysts in the asymmetric Michael reaction of 3-substituted isoindolinones. This protocol provides a convenient method for the construction of valuable asymmetric 3,3-disubstituted isoindolinones in high yields and moderate to good enantioselectivity. Diastereoselectivity was also investigated
已经证明,从金鸡纳生物碱中衍生出来的现成的手性铵盐在3取代的异吲哚满酮的不对称迈克尔反应中是有效的相转移催化剂。该方案提供了一种方便的方法,用于以高收率和中等至良好的对映选择性构建有价值的不对称3,3-二取代异吲哚满酮。非对映选择性还研究了连续的三级和四级立体中心的构建。通过串联共轭加成/环化反应,将丙烯醛用作迈克尔受体产生了有趣的三环衍生物,即吡咯并异吲哚满酮类似物。