Halogen substituted pyridylalkyl ketones

US4927938A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans Lindel · Leverkusen, DE
• Werner Hallenbach · Nordhorn, DE

Key dates

• Filing date: Jul 6, 1988
• Grant date: May 22, 1990
• Expiry date: Jul 6, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/78
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

##STR1## in which R and R.sup.1 each independently is hydrogen, alkanoyl or alkyl or, together with the adjacent nitrogen atom, form an optionally substituted saturated or unsaturated heterocyclic radical, PA1 R.sup.2 is halogen, PA1 R.sup.3 is alkyl, PA1 R.sup.4 is C.sub.1-3 -alkyl, PA1 R.sup.5 is hydrogen or C.sub.1-2 -alkyl, PA1 R.sup.6 is C.sub.1-3 -alkyl, and PA1 Hal is halogen. The process is new as are intermediates II, IV and V. The products are known intermediates.