Remarkable dependency of the regioselectivity in the ring opening of α,β-epoxyketones upon tin halide-Lewis base complexes as catalysts
Tin halide-base complexes are used as catalysts for controlling the regioselectivity in the reaction of α,β-epoxyketones with electrophiles. Bu2SnX2-Ph3P complex caused the cleavage of the C-O bond adjacent to the carbonyl