Discovery and Development of a Commercial Synthesis of Azafenidin
作者:Rafael Shapiro、Robert DiCosimo、Susan M. Hennessey、Barry Stieglitz、Onorato Campopiano、George C. Chiang
DOI:10.1021/op9901994
日期:2001.11.1
commercial synthesis of the DuPont herbicide azafenidin is described. Discovery of a novel synthesis of the triazolinone ring system and a practical, environmentally benign process to 5-cyanovaleramide were critical breakthroughs in enabling azafenidin to be manufactured at an acceptable cost. The process began with the selective hydrolysis of DuPont's nylon intermediate, adiponitrile, to 5-cyanovaleramide