Interaction of Vinylphosphonates with 1,2-Diaminoethane and Ethanolamine

Abstract

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.

Keywords:

• Keywords
• Addition
• 2-aminoethanol
• β-aminoethylphosphonates
• betains
• 1,2-diaminoethane
• vinylphosphonate

Dedicated to Professor Marian Mikołajczyk, CBMiM PAN in Łódź, Poland, on the occasion of his 70th birthday.