Lewis acid-promoted [2 + 2] cycloadditions of alkenes with aryl ketenes
作者:E. M. Rigsbee、C. Zhou、C. M. Rasik、A. Z. Spitz、A. J. Nichols、M. K. Brown
DOI:10.1039/c5ob01837d
日期:——
A method for the [2 + 2] cycloaddition of aryl ketenes and alkenes is presented. The process involves the in situ generation of a ketene in the presence of a Lewis acid. The utility of products is demonstrated towards the synthesis of a common scaffold found in several natural product families.