Method for preparing 3-methylthiopropionaldehyde

US11014878B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Stephan Rautenberg · Hanau, DE
• Sascha Ceylan · Hanau, DE
• Martin Koerfer · Alzenau, DE
• Judith Hierold · Hannover, DE
• Harald Jakob · Hasselroth, DE
• Christian Kaiser · Waldaschaff, DE
• Rainer Malzkorn · Dorsten, DE
• Thorsten MERKER · Lechenich, DE
• Anja Nordschild · Oberursel, DE

Key dates

• Filing date: Feb 14, 2017
• Grant date: May 25, 2021
• Expiry date: Feb 14, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C323/22
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.