(S)-2-Benzyl-2-((2S,4S,5S)-3,4-dimethyl-2-oxo-5-phenyl-2λ5-[1,3,2]oxazaphospholidin-2-yloxy)-pentanenitrile

(E)-(R)-2-((2S,4S,5S)-3,4-Dimethyl-2-oxo-5-phenyl-2λ5-[1,3,2]oxazaphospholidin-2-yloxy)-2-((E)-3-phenyl-allyl)-pent-3-enenitrile

trans-4-azido-2-pentenenitrile

methyl 4-(tert-butyldiphenylsilyloxy)-3-oxo-5E-heptenoate