Phosphine-mediated enantioselective [4 + 1] annulations between <i>ortho</i>-quinone methides and Morita–Baylis–Hillman carbonates

Abstract

First example of phosphine catalyzed enantioselective [4 + 1] annulations of <italic>o</italic>-QMs and MBH carbonates for chiral 2,3-dihydrobenzofurans.