Highly Enantioselective Addition of 1-Fluoro-1-nitro(phenylsulfonyl)methane to α,β-Unsaturated Aldehydes
作者:Martin Kamlar、Natalia Bravo、Andrea-Nekane R. Alba、Simona Hybelbauerová、Ivana Císařová、Jan Veselý、Albert Moyano、Ramon Rios
DOI:10.1002/ejoc.201000851
日期:——
An organocatalytic, highly enantioselective addition of 1-fluoro-1-nitro(phenylsulfonyl)methane to α,β-unsaturated aldehydes is reported. The reaction is simply catalyzed by secondary amines and furnishes the corresponding fluorinated derivatives in good yields, with moderate diastereoselectivities and excellent enantioselectivities. The absolute configuration of the major diastereomers was unambiguously
报道了 1-氟-1-硝基(苯磺酰基)甲烷与 α,β-不饱和醛的有机催化、高度对映选择性加成。该反应简单地由仲胺催化,并以良好的收率提供相应的氟化衍生物,具有适中的非对映选择性和优异的对映选择性。通过 X 射线衍射分析明确确定了主要非对映异构体的绝对构型。