Synthesis of substituted esters of imidazoles, oxazoles, thiazoles, and diethyl pyrazine-2,5-dicarboxylate from a common acyclic precursor employing C-formylation strategy
作者:Goraksha Khose、Shailesh Shinde、Anil Panmand、Ravibhushan Kulkarni、Yogesh Munot、Anish Bandyopadhyay、Dinesh Barawkar、Santoshkumar N. Patil
DOI:10.1016/j.tetlet.2014.03.039
日期:2014.4
A novel synthetic route to substituted esters of imidazoles, oxazoles, thiazoles, and diethyl pyrazine-2,5-dicarboxylates via C-formylation of glycine ethyl ester hydrochloride is reported. This methodology is simple, robust, and gives good yields of different heterocyclic esters in one or two steps from a common acyclic precursor and is amenable to large scale synthesis.
报道了一种通过甘氨酸乙酯盐酸盐的C-甲酰化反应合成咪唑,恶唑,噻唑和吡嗪-2,5-二羧酸二乙酯的取代酯的新颖合成途径。该方法简单,稳健,并且可以在一个或两个步骤中从常见的无环前体中很好地获得不同杂环酯的收率,并且适合大规模合成。