Ym. Tsai et Sy. Chang, INTRAMOLECULAR CYCLIZATIONS OF ALPHA-STANNYL RADICALS TO ACYLSILANES - REGIOSPECIFIC SYNTHESES OF 5-MEMBERED CYCLIC SILYL ENOL ETHERS, Journal of the Chemical Society, Chemical Communications, (9), 1995, pp. 981-982
alpha-Stannyl radicals generated from acylsilanes 5, 13 and 14 cyclize
to give good yields of cyclic silyl enol ethers after sequential cycl
izations, radical Brook rearrangements and beta-scissions.