Methods for producing sulfonic acid diamides

US9920002B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Axel Pleschke
• Thomas Schmidt · Neustadt, DE
• Joachim Gebhardt · Monsheim, DE
• Sandra Loehr · Ludwigshafen, DE
• Michael Keil · Freinsheim, DE
• Jan Hendrik Wevers · Zörbig, DE

Key dates

• Filing date: Oct 10, 2008
• Grant date: Mar 20, 2018
• Expiry date: Apr 12, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D239/54
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing sulfuric diamides of the general formula IR1R2N—S(O)2—NH2  (I)in which R1 and R2 are each independently a primary alkyl radical having from 1 to 8 carbon atoms, a secondary alkyl radical having from 3 to 8 carbon atoms or a cycloalkyl radical having from 5 to 8 carbon atoms, or, together with the nitrogen atom, form a 5- to 8-membered, saturated nitrogen heterocycle which, as well as the nitrogen atom, may have a further heteroatom selected from O and S as a ring member, where the nitrogen heterocycle is unsubstituted or may have 1, 2, 3 or 4 alkyl groups having in each case from 1 to 4 carbon atoms as substituents. The process comprises the following steps: