Lewis acid-catalyzed tandem cyclization of <i>in situ</i> generated <i>o</i>-quinone methides and arylsulfonyl hydrazides for a one-pot entry to 3-sulfonylbenzofurans

Abstract

Lewis acid-mediated one-pot tandem cyclization of <italic>o</italic>-QMs with arylsulfonyl hydrazides was described for the first time and the corresponding 3-sulfonylbenzofuran products were obtained in moderate to good yields.