Mechanochemical Grignard Reactions with Gaseous CO 2 and Sodium Methyl Carbonate**

Angewandte Chemie, vol. 134

Abstract

Abstract A one‐pot, three‐step protocol for the preparation of Grignard reagents from organobromides in a ball mill and their subsequent reactions with gaseous carbon dioxide (CO 2 ) or sodium methyl carbonate providing aryl and alkyl carboxylic acids in up to 82 % yield is reported. Noteworthy are the short reaction times and the significantly reduced solvent amounts [2.0 equiv. for liquid assisted grinding (LAG) conditions]. Unexpectedly, aryl bromides with methoxy substituents lead to symmetric ketones as major products.

Authors 4

1. Victoria S. Pfennig Aachen Institute of Organic Chemistry

   RWTH Aachen University

   Affiliation as printed

   Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany

   Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany

2. Romina C. Villella Aachen Institute of Organic Chemistry

   RWTH Aachen University

   Affiliation as printed

   Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany

   Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany

3. Julia Nikodemus Aachen Institute of Organic Chemistry

   RWTH Aachen University

   Affiliation as printed

   Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany

   Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany

4. Carsten Bolm corresponding Aachen Institute of Organic Chemistry

   RWTH Aachen University

   Affiliation as printed

   Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany

   Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany