论文部分内容阅读
A convenient synthesis of various heterocyclic substituted ureidoalkylphosphonic aciddiphenyl esters 3 is reported in this paper. a-Am in oalkylphosphonic acid diphenyl esters 1 reactedwith triphosgene, and then treated with heterocyclic ammes gave 3. Small amount of symmetricurylenediphosphonate 4 are isolated as side products.
A convenient synthesis of various heterocyclic substituted ureidoalkylphosphonic acid diphenyl esters 3 is reported in this paper. A-Am in oalkylphosphonic acid diphenyl esters 1 reactedwith triphosgene, and then treated with heterocyclic ammes gave 3. Small amount of symmetricurylenediphosphonate 4 are isolated as side products.