The hemiacetals 15 and 18 gave cyclopropanols 17 and 20 when treated with NaH in DMSO, showing that the silyl group has enhanced electrofugal powers because of the participation of the oxyanion.
I. Fleming and A. K. Mandal, Chem. Commun., 1999, 923 DOI: 10.1039/A901920K
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