3-Butenoic acid from MedChemExpress

3-Butenoic acid (Vinylacetic acid) can be used to synthesize bicyclic 3,6-dihydro-1,2-oxazine. Strained bicyclic 3,6-dihydro-1,2-oxazine is a reactive substrate in domino metathesis with an external alkene[1][2]