关键词: 吡唑并[3,4-d]嘧啶-4-酮衍生物, 合成, 除草活性

Sixteen novel 3,6-dialkylthio-1-phenyl-pyrazolo[3,4-d]pyrimidin-4-ones were synthesized from the intermediate 3-alkylthio-1-phenyl-pyrazolo[3,4-d]pyrimidin-6-thiones and RX or BrR Br. All com-pounds synthesized were identified by ¹H NMR, IR and MS techniques. Preliminary bioassay results show that some of these compounds have better inhibitory effect against the roots of rape and barnyard grass.

Key words: pyrazolo[3,4-d]pyrimidin-4-one, sythesis, herbicide