Аннотации:
The reaction of 1,2-diaminoethane with vinylphosphonate occurs as the addition of the amino group to the β-carbon atom of the unsaturated substrate to give 1:1 and 1:2 adducts. The nucleophilic addition of 2-aminoethanol at the β-position of the double bond of vinylphosphonates involves only the amino group and leads to the formation of hydroxy β-aminoethylphosphonates or zwitterions depending on conditions.