4H-3,1-Benzoxazine derivatives, compositions and herbicidal use

US4523942A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerhard Hamprecht · Weinheim, DE
• Juergen Varwig · Heidelberg, DE
• Bruno Wuerzer · Otterstadt, DE

Key dates

• Filing date: Jan 31, 1983
• Grant date: Jun 18, 1985
• Expiry date: Jan 31, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D265/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel 4H-3,1-benzoxazine derivatives of the formula ##STR1## where R.sup.1, R.sup.2 and Y have the meanings given in the disclosure, a process for their preparation, and their use for combating unwanted plant growth.