Process for preparing 4-chlorobenzyl propargyl ether

US11358922B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Daniel Saelinger · Ludwigshafen, DE
• Philip Muelheims · Ludwigshafen, DE
• Helmut Zech · Bad Dürkheim, DE
• Roland Goetz · Ludwigshafen, DE

Key dates

• Filing date: Oct 31, 2018
• Grant date: Jun 14, 2022
• Expiry date: Oct 31, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C43/176
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing 4-chlorobenzyl propargylether comprising a step (a) of reacting 4-chlorobenzyl chloride with propargyl alcohol in the presence of a base and a phase transfer catalyst, wherein the reaction mixture comprises at least two phases, wherein one phase is an organic phase and one phase is an aqueous phase.