High throughput synthesis of 2,3,6-trisubstituted-5,6-dihydroimidazo[2,1-b]thiazole derivatives
作者:Yangmei Li、Marc Giulianotti、Richard A. Houghten
DOI:10.1016/j.tetlet.2010.12.006
日期:2011.2
A facile approach to the synthesis of 2,3,6-trisubstituted-5,6-dihydroimidazo[2,1-b]thiazole was reported. A resin bound cyclic thiourea was formed by the treatment of a resin bound diamine with 1,1′-thiocarbonyldiimidazole, and then reacted with a α-haloketone to generate a resin bound isothiourea. HF treatment of the resin bound isothiourea resulted in the cleavage of the product and simultaneous
报道了一种简便的合成 2,3,6-三取代-5,6-二氢咪唑并[2,1- b ]噻唑的方法。通过用1,1'-硫代羰基二咪唑处理树脂结合的二胺形成树脂结合的环状硫脲,然后与α-卤代酮反应生成树脂结合的异硫脲。树脂结合异硫脲的 HF 处理导致产物裂解并同时形成烯胺键。这导致以高产率和纯度形成2,3,6-三取代-5,6-二氢咪唑并[2,1- b ]噻唑。