Synthesis 2015; 47(17): 2635-2640
DOI: 10.1055/s-0034-1380753
paper
© Georg Thieme Verlag Stuttgart · New York

Regioselective Synthesis of α-Perfluoroalkylated Ketals via Double Michael Addition of Alcohols to Activated Alkynes

Ella Ndong
a   Laboratoire d’Infectiologie et Santé Publique (UMR 1282), Equipe Recherche et Innovation en Chimie Médicinale, Faculté des Sciences, Parc de Grandmont, 37200 Tours, France   Email: mohamed.abarbri@univ-tours.fr
,
Guy Judicael
a   Laboratoire d’Infectiologie et Santé Publique (UMR 1282), Equipe Recherche et Innovation en Chimie Médicinale, Faculté des Sciences, Parc de Grandmont, 37200 Tours, France   Email: mohamed.abarbri@univ-tours.fr
,
Jean Luc Parrain
b   Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France
,
Mohamed Abarbri*
a   Laboratoire d’Infectiologie et Santé Publique (UMR 1282), Equipe Recherche et Innovation en Chimie Médicinale, Faculté des Sciences, Parc de Grandmont, 37200 Tours, France   Email: mohamed.abarbri@univ-tours.fr
› Author Affiliations
Further Information

Publication History

Received: 11 February 2015

Accepted after revision: 16 April 2015

Publication Date:
17 June 2015 (online)


Abstract

An efficient method was developed for the synthesis of alkyl 3,3-dialkoxy-3-(perfluoroalkyl)propanoates from ethyl 3-(perfluoroalkyl)propynoates and alcohols using a base-catalyzed double Michael addition reaction (which was accompanied by transesterification in the case of MeOH, EtOH, PrOH, and BuOH). This method provides easy access to the product α-perfluoroalkyl ketals with reasonable to good yields with total regioselectivity. This procedure does not require the use of expensive supplementary additives for the preparation of α-perfluoroalkyl ketals which are very sensitive to acidic conditions.

Supporting Information