作者:Shyam Sathyamoorthi、J. Du Bois
DOI:10.1021/acs.orglett.6b03176
日期:2016.12.16
for converting C–H to C–O bonds through oxidative cyclization of carboxylic acids to generate lactone products is described. The reaction employs catalytic amounts of Cu(OAc)2 and potassium persulfate as the terminal oxidant and is performed open to air in an aqueous acetic acid solvent system. Preliminary mechanistic studies suggest that substrate oxidation likely proceeds by sulfate radical anion
描述了一种通过羧酸的氧化环化反应将C–H转换为C–O键以生成内酯产物的方法。该反应采用催化量的Cu(OAc)2和过硫酸钾作为末端氧化剂,并在乙酸水溶液体系中在空气中开放进行。初步的机理研究表明,底物氧化可能是由硫酸根阴离子引起的,而Cu催化剂对产物确定步骤没有影响。这些结论与提出羧酸酯基团的中间体的相关研究不同。