Method for producing dihalo acetoacetic alkyl esters

US8044231B2 · kind B2 · utility

Assignee

• BAYER CROPSCIENCE AKTIENGESELLSCHAFT · DE

Inventors

• Sergii Pazenok · Solingen, DE
• Norbert Lui · Odenthal, DE

Key dates

• Filing date: Jan 22, 2008
• Grant date: Oct 25, 2011
• Expiry date: Oct 7, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/343
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing alkyl dihaloacetoacetates of the formula (I) by reacting α,α-dihaloamines of the formula (III) with acetic esters of the formula (II) in the presence of bases.