γ-Unsaturated-α-aminophosphonates are prepared in enantiomerically enriched form via organocatalytic aldehyde α-sulfenylation/olefination followed by oxaziridine-mediated sulfimidation and sulfimide [2,3]-sigmatropic rearrangement. Subsequent N-deprotection and amino acid coupling are also accomplished. asymmetric catalysis - amination - rearrangement - organocatalysis - oxaziridine
β,γ-不饱和-α-
氨基膦酸酯的制备是通过有机催化醛α-亚磺酰基化/烯烃化,然后
恶唑烷介导的磺
酰亚胺化和磺
酰亚胺[2,3]-σ重排而以对映体富集的形式进行。随后的N-脱保护和
氨基酸偶联也完成了。 不对称催化-胺化-重排-有机催化-
恶唑烷