Silver-catalyzed regioselective synthesis of acridines, quinolines, and naphthalenes from 3-(2-alkynyl)aryl-β-ketoesters
作者:Satya Prakash Shukla、Rakesh Tiwari、Akhilesh Kumar Verma
DOI:10.1016/j.tet.2012.08.068
日期:2012.11
general synthetic method for a wide range of medicinally useful 2-carboxylate derivatives of acridinols, quinolinols, and naphthalenols has been developed via silver-catalyzed electrophilic cyclization of 3-(2-alkynyl)aryl-β-ketoesters. The designed reaction involved selective C–C bond formation on more electrophilic alkynyl carbon, which resulted in the regioselective 6-endo-dig cyclized product, as confirmed
通过银催化的3-(2-炔基)芳基-β-酮酸酯的亲电子环化反应,已经开发了一种简便,有效且通用的合成方法,用于各种医学上有用的a啶醇,喹啉醇和萘酚的2-羧酸酯衍生物。所设计的反应涉及在多个电子炔基碳选择性C-C键的形成,这就造成了区域选择性6-内-挖环化产物,通过X射线晶体学研究证实。进行氘标记实验以支持所提出的机制。合成方法可适应炔烃上广泛的官能团变异,这对结构和生物活性评估非常有利。