Synthesis of novel aryl-1,2-oxazoles from ortho-hydroxyaryloximes
作者:Trevor J. Dale、Aaron C. Sather、Julius Rebek
DOI:10.1016/j.tetlet.2009.08.086
日期:2009.11
The reaction of ortho-hydroxyaryloximes with p-toluenesulfonyl chloride in the presence of an amine base efficiently generates the corresponding aryl-1,2-oxazole. Investigations revealed that solvent polarity greatly affected the rate of the reaction with faster rates observed in more polar solvents. The reaction proceeds to completion in only a few minutes in acetonitrile at room temperature, and the synthesis of four novel aryl-1,2-oxazoles is presented. (C) 2009 Elsevier Ltd. All rights reserved.