Process for preparing 4-amino-pyridazines

US10584102B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Eric George Klauber · Bad Dürkheim, DE
• Michael Rack · Eppelheim, DE
• Roland Goetz · Ludwigshafen, DE
• Sebastian Soergel · Ludwigshafen, DE

Key dates

• Filing date: May 10, 2016
• Grant date: Mar 10, 2020
• Expiry date: May 10, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D403/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Provided herein is a process for preparing a pyridazine amine compound of formula V, and a process for preparing dichloropyridazine amine compounds of formula IVa, IVb, and mixtures thereof. Further, provided herein are novel dichloropyridazine amine compounds of formula IVa, IVb, and mixtures thereof, wherein the amino group is an ethylamino group.