Synthesis and herbicidal activity of 1,3-substituted quinazolinedione derivatives

Abstract

Quinazolinediones derivatives are a new family of diphenyl ether herbicides. Twenty four 1,3-substituted quinazolinediones derivatives were designed and synthesized. Their structures were confirmed by 1H NMR and elemental analysis. The preliminary bioassay results show that most of these compounds have herbicidal activity in post-emergence treatment. The compounds 3c, 3d, 3e, 3f showed 90-100% herbicidal efficacy at 200 gha-1 against dicotyledonous weeds such as Abutilon theophrasti. ©ARKAT USA, Inc.