(E)-4-(Diethoxy-phosphoryl)-but-2-enoic acid tert-butyl ester

(+)-(1R,4S)-N-[2-(ethenyloxy)propenoyl]-1,7,7-trimethyl-3-azabicyclo[2.2.1]heptan-2-one

(1R,4S)-N-[2-(1,2-dibromoethoxy)propenoyl]-1,7,7-trimethyl-3-azabicyclo[2.2.1]heptan-2-one

2-Vinyloxy-acrylic acid ethyl ester

(2E,4E)-6-(tert-Butyl-dimethyl-silanyloxy)-hexa-2,4-dienoic acid tert-butyl ester