Process for preparing acyloxybenzenesulfonates

US6822113B2 · kind B2 · utility

Assignee

• Clariant Corporation · DE

Inventors

• Gerd Reinhardt · Kelkheim, DE
• Peter Naumann · Stockelsdorf, DE
• Alexander Lerch · Gelnhausen, DE
• Wolf-Dieter Mueller · Laufenburg (Baden), DE
• Narayan D. Sadanani · Charlotte, US

Key dates

• Filing date: May 8, 2003
• Grant date: Nov 23, 2004
• Expiry date: May 8, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C303/22
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing acyloxybenzenesulfonates by reacting anhydrous phenolsulfonates with carboxylic acid derivatives comprises conducting the reaction with a salt of a phenolsulfonic acid which has a water content of less than 0.5% by weight and has been contacted with a substance having basic properties.