Tetrahedron Letters p. 3351 - 3354 (1992)
Update date:2022-08-04
Topics:
Wang, Shouming
Howe, Graham P.
Mahal, Ravinderjit S.
Procter, Garry
Treatment of the α,β-epoxy-aldehydes (l) and (2) with Lewis acids followed by in situ reaction with carbon nucleophiles produces halohydrins of the products of "chelation controlled" addition to the aldehyde with high diastereoselectivity; The regiochemistry of epoxide opening is determined by choice of Lewis acid.
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Doi:10.1016/j.tet.2020.131484
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