Metal-catalyzed cascade rearrangements of 3-alkynyl flavone ethers.

ABSTRACT: Metal-mediated rearrangements of 3-alkynyl flavone ethers are reported. The overall process involves 5-endo enyne cyclization to a platinum-containing spiro-oxocarbenium intermediate which may be trapped with methanol to produce spirodihydrofurans or further rearranged to afford either allenyl chromanediones or benzofuranones.

SUBMITTER: Xiong Y 

PROVIDER: S-EPMC3773515 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature