Site-selective multicomponent synthesis of densely substituted 2-oxo dihydropyrroles catalyzed by clean, reusable, and heterogeneous TiO2 nanopowder
作者:Sunil Rana、Mike Brown、Arghya Dutta、Asim Bhaumik、Chhanda Mukhopadhyay
DOI:10.1016/j.tetlet.2012.12.109
日期:2013.3
four component coupling reaction of dialkyl but-2-ynedioate, two different amines, and an aldehyde. The reaction is site-selective with respect to aromatic and aliphatic amines. Environmentally benign reaction procedure, excellent yields, tolerance of varieties of functionalities in the reactants, a wide variety of products and reusability of the catalyst make the methodology highly beneficial for
清洁,可重复使用的非均相催化剂二氧化钛(TiO 2)纳米粉通过丁二炔基二烷基酯,两种不同的胺和四胺的四组分偶联反应,已证明了一种高效合成密集取代的2-氧代二氢吡咯的有效方法。醛。该反应相对于芳族和脂族胺是位点选择性的。环境友好的反应程序,优异的收率,反应物中各种功能的耐受性,多种产品以及催化剂的可重复使用性,使得该方法学对合成多官能二氢吡咯非常有用。