diethyl α-{[N-(pent-4-enyl)-N-tosyl]aminomethyl}vinylphosphonate

diethyl α-[(2,5-dioxopyrrolidin-1-yl)methyl]vinylphosphonate

diethyl (S)-3-(4-benzyl-2-oxooxazolidin-3-yl)prop-1-en-2-ylphosphonate

dimethyl 2-[2-(diethoxyphosphoryl)allyl]malonate

ethyl 2-acetyl-4-(diethoxyphosphoryl)pent-4-enoate