l-Proline-catalysed three-component domino reactions for the diastereoselective synthesis of 5,6-disubstituted 3-thiomorpholinones
作者:Sethuraman Indumathi、Subbu Perumal、J. Carlos Menéndez
DOI:10.1016/j.tet.2011.06.107
日期:2011.9
l-Proline-catalysed three-component domino reactions of ethyl 2-[(2-oxo-2-arylethyl)sulfanyl]acetate, aromatic aldehydes and ammonia provide a rapid and facile access to novel trans-6-aroyl-5-aryl-3-thiomorpholinones. This diastereoselective reaction presumably proceeds via a domino sequence comprising enamine formation, Mannich reaction and intramolecular amidation individual steps and resulting in
1-脯氨酸催化的2-[((2-氧代-2-芳基乙基)硫烷基]乙酸乙酯,芳族醛和氨的三组分多米诺反应提供了快速简便地获得新型反式-6-芳基-5-芳基-的方法3-硫吗啉酮。这种非对映选择性反应大概是通过包含烯胺形成,曼尼希反应和分子内酰胺化反应各个步骤的多米诺序列进行的,并在一锅操作中产生了一个C–C和两个C–N键。该反应还产生具有完全非对映选择性的两个连续的立体中心。