Imidazole derivatives, part IX selective reactions of functionalized imidazo[1,2-a]pyridines: stereospecific synthesis of 5,6-dihydroimidazo[1,2-a]pyridines
摘要:
Chemo-, regio-, and stereoselective reactions of the 5,6-dimethoxycarbonyl-functionalized imidazo[1,2-a]pyridine 3 provide various derivatives including the novel furo[3,4-e]imidazo[1,2-a]pyridine and cyclopropa[e]imidazo[1,2-a]pyridine ring systems.
A novel synthesis of the imidazo[1,2-a]pyridine ring system
作者:Hans-Joachim Knölker、Roland Boese
DOI:10.1039/c39880001151
日期:——
A simple one-step procedure furnishing regioselectively functionalized imidazo[1,2-a]pyridines (2) by a novel condensation reaction of 1-phenylacetylimidazole (1) with acetylenic dicarboxylic esters is described; the structure of one of the products (2a) has been determined by X-ray crystallography.
描述了一种通过1-苯基乙酰基咪唑(1)与炔属二羧酸酯的新型缩合反应提供区域选择性官能化的咪唑并[1,2- a ]吡啶(2)的简单步骤。产物(2a)之一的结构已经通过X射线晶体学确定。
Imidazole Derivatives. Part V. Imidazo[1',2':1,6]pyrdio[2,3-d]pyridazine: Synthesis, Structure, and Preliminary Chemistry of a Novel Heterocyclic Ring System