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[摘要]:beta,gamma-Unsaturated-alpha-aminophosphonates are prepared in enantiomerically enriched form via organocatalytic aldehyde alpha-sulfenylation/olefination followed by oxaziridine-mediated sulfimidation and sulfimide [2,3]-sigmatropic rearrangement. Subsequent N-deprotection and amino acid coupling are also accomplished. |
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