作者:Ning Xi、Shimin Xu、Yuan Cheng、Andrew S. Tasker、Randall W. Hungate、Paul J. Reider
DOI:10.1016/j.tetlet.2005.08.138
日期:2005.10
A regio-specific synthesis of N-substituted imidazoles is described. Readily available α-amino acids are converted to α-aminocarbonyl derivatives and reacted with various isothiocyanates to give N-substituted cyclic thioureas. Oxidative or reductive desulfurization of the cyclic thioureas affords structurally diversified imidazoles in good to excellent yields.
描述了N-取代的咪唑的区域特异性合成。容易获得的α-氨基酸被转化为α-氨基羰基衍生物,并与各种异硫氰酸酯反应,得到N-取代的环状硫脲。环状硫脲的氧化或还原脱硫以良好或优异的收率提供了结构上多样化的咪唑。