A convenient synthesis of various heterocyclic substituted ureidoalkylphosphonic acid diphenyl esters 3 is reported in this paper, alpha-Aminoalkylphosphonic acid diphenyl esters 1 reacted with triphosgene, and then t...A convenient synthesis of various heterocyclic substituted ureidoalkylphosphonic acid diphenyl esters 3 is reported in this paper, alpha-Aminoalkylphosphonic acid diphenyl esters 1 reacted with triphosgene, and then treated with heterocyclic amines gave 3. Small amount of symmetric urylenediphosphonate 4 are isolated as side products.展开更多
文摘A convenient synthesis of various heterocyclic substituted ureidoalkylphosphonic acid diphenyl esters 3 is reported in this paper, alpha-Aminoalkylphosphonic acid diphenyl esters 1 reacted with triphosgene, and then treated with heterocyclic amines gave 3. Small amount of symmetric urylenediphosphonate 4 are isolated as side products.
