Synthesis 2022; 54(05): 1413-1421
DOI: 10.1055/s-0040-1719856
paper

Hydrohalogenation of Unactivated Alkenes Using a Methanesulfonic Acid/Halide Salt Combination

Xavier Bertrand
a   CCVC, PROTEO, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
,
Pascal Paquin
a   CCVC, PROTEO, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
,
Laurent Chabaud
b   Institut des Sciences Moléculaires, UMR 5255, CNRS, Université de Bordeaux, 351 Cours de la libération, 33405 Talence, France
,
a   CCVC, PROTEO, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
› Author Affiliations
This work was supported by the Natural Sciences and Engineering Research Council of Canada, and Université Laval.


Abstract

The hydrochlorination, hydrobromination, and hydroiodination of unactivated alkenes using methanesulfonic acid and inorganic halide salts (CaCl2, LiBr, LiI) in acetic acid are reported. This approach uses readily available and inexpensive reagents to provide the alkyl halides in up to 99% yield. An example of deuteriochlorination using deuterated acetic acid as the solvent is also demonstrated.

Supporting Information



Publication History

Received: 13 September 2021

Accepted: 12 October 2021

Article published online:
22 November 2021

© 2021. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany