Enhanced diastereoselectivity in the addition of ester enolate to optically active α,β-epoxyaldehydes obtained from nerol and geraniol
摘要:
Optically active alpha,beta-epoxyaldehydes obtained from nerol and geraniol were allowed to react with lithium tert-butylacetate. The diastereofacial preference of the aldolisation reaction was always anti (''Si''face attack of the carbonyl). The best diastereoselectivity ever observed in these series (>99 : <1 anti : syn) was obtained for the alpha,beta-epoxyneral aldolisation. Copyright (C) 1996 Elsevier Science Ltd
Enhanced diastereoselectivity in the addition of ester enolate to optically active α,β-epoxyaldehydes obtained from nerol and geraniol
摘要:
Optically active alpha,beta-epoxyaldehydes obtained from nerol and geraniol were allowed to react with lithium tert-butylacetate. The diastereofacial preference of the aldolisation reaction was always anti (''Si''face attack of the carbonyl). The best diastereoselectivity ever observed in these series (>99 : <1 anti : syn) was obtained for the alpha,beta-epoxyneral aldolisation. Copyright (C) 1996 Elsevier Science Ltd