A convenient one-pot synthesis of 7-hydroxy-isoflavones from resorcinol with substituted phenylacetic acids
作者:Himanshu Singh、Ram Pratap
DOI:10.1016/j.tetlet.2006.09.034
日期:2006.11
7-hydroxy-isoflavones is reported. The acylation of resorcinol with various phenyl acetic acids in molten zinc chloride affords an intermediate deoxybenzoin which without isolation is subjected to cyclization with N,N-dimethylformamide in the presence of boron trifluoride diethyl etherate and methanesulfonylchloride to afford the 7-hydroxy-isoflavone without the formation of any by-product.