Process for the preparation of organic disulfides

US6686506B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Werner Hesse · Großburgwedel, DE
• Hans-Josef Sterzel · Schifferstadt, DE
• Christian Tragut · Monsheim, DE

Key dates

• Filing date: May 25, 2001
• Grant date: Feb 3, 2004
• Expiry date: May 25, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C321/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of organic disulfides by oxidation of mercaptans with sulfur dissolved in an organic disulfide using an amine as catalyst, where the mercaptans are used as “crude mercaptan stream” from a reaction of alcohols with hydrogen sulfide over a catalyst suitable for mercaptan synthesis. Furthermore, the invention relates to the use of the organic disulfides for the preparation of alkanesulfonic acids.