NEW APPROACH TO 1-SUBSTITUTED-l,2-ALKADIENEPHOSPHONATES I

Abstract

The possibility of the substitution of the H atom at C1 -position of the phosphorylated allenes with different kind of electrophiles have been discussed and evidence for the mechanism of the heterocyclization of allenephosphonates by the reaction with electrophilic reagents have been supplied. The new approach for synthesis of 1-substituted-1,2-alkadienephosphonates via acetylene-allene rearrangement of acetylenecarboxylic acid have been discussed

Key Words:

• Allenephosphonates
• electrophilic reagents
• heterocyclization
• acetylenecarboxylie acid