Zirconium-catalyzed Nagata reaction for the synthesis of 2-aryl-1,3,2-aryldioxaborins via a mild three-component condensation of phenols, aldehydes, and boronic acid
作者:Hongchao Zheng、Dennis G. Hall
DOI:10.1016/j.tetlet.2010.06.035
日期:2010.8
of phenols with aldehydes promoted by 3,5-bis(trifluoromethyl)phenyl boronicacid, leading to the formation of 2-aryl-1,3,2-aryldioxaborins, was investigated and optimized. The reaction afforded the desired aryldioxaborins in good to excellent yields under mild conditions at room temperature. The electron-deficient boronicacid promoter was essential. Electron-rich phenols react faster, and both alkyl