作者:Xiao-Qi Yu、Bo Wu、Jun Wen、Ji Zhang、Jing Li、Yong-Zhe Xiang
DOI:10.1055/s-0028-1087547
日期:2009.2
An efficient and mild protocol for the preparation of 4,5-disubstituted oxazoles through an improved one-pot van Leusen oxazole synthesis in ionic liquids is described. The oxazole products were prepared from tosylmethyl isocyanide (TosMIC), aliphatic halides and various aldehydes in high yields. The recovered ionic liquids could be reused as solvent for six runs without significant loss of yields.
本文介绍了在离子液体中通过改进的单锅 van Leusen噁唑合成法制备 4,5-二取代噁唑的高效而温和的方案。以甲苯基甲基异氰酸酯 (TosMIC)、脂肪族卤化物和各种醛为原料,高产率地制备了噁唑产品。回收的离子液体可作为溶剂重复使用六次,且收率无明显下降。