The Synthesis and Herbicidal Activity of 5-(Substituted-phenyl)-4,6-dioxo-4,5,6,7-tetrahydropyrazolo3,4-dpyrimidines

摘要

@@ 1(Heterocyclyl), 2, 4, 5-tetrasubstituted benzene (HTSB) derivatives are one of the most interesting series of compounds as high herbicidal activity (1050g-a. i. ha-1) to annual grasses and broad-leaf weeds. After oxadiazon as the first compound of the HTSB family was introduced in 1968 by Rhone-Poulenc. Many other commercial HTSB derivatives have been discovered by agrochemical companies. As a continuation of our research work, herein, 5(substituted-phenyl)-4, 6-dioxo-4, 5,6, 7