Synthesis and herbicidal activity of 1,4-benzoxazin-3-one sulfonylureas

✍ Scribed by Anderson, Janet E.; Bell, Stephen; Best, Wayne M.; Drygala, Peter F.; Watson, Keith G.; Bryan, Ian B.

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 551 KB
• Volume: 46
• Category: Article
• ISSN: 1526-498X
• DOI: 10.1002/(sici)1096-9063(199602)46:2<131::aid-ps322>3.0.co;2-n

✦ Synopsis

A series of 1,4-benzoxazin-3-ones with a sulfonylurea group attached at either the 5 or 8 position have been synthesised and found to show moderate herbicidal activity. Similarly, a series of 1,4-benzothiazin-3-ones, including some of the related S-oxides and S-dioxides, with a sulfonylurea group linked a t the 8 position, have been prepared and been found to be herbicidal. In both series of compounds many substituent variations were made but none of the compounds showed any useful crop selectivities.