Synlett 2018; 29(09): 1181-1186
DOI: 10.1055/s-0036-1591982
letter
© Georg Thieme Verlag Stuttgart · New York

Assessing the Activity of Lewis Bases Organocatalysts in Halonium-Induced Carbocyclization Reactions

Charlotte Grandclaudon
a   Institut de Recherche de Chimie Paris PSL Research University, Chimie ParisTech-CNRS, 11 Rue P. et M. Curie, 75005 Paris, France
,
Mirko Ruamps
a   Institut de Recherche de Chimie Paris PSL Research University, Chimie ParisTech-CNRS, 11 Rue P. et M. Curie, 75005 Paris, France
,
Raphaël Duboc
a   Institut de Recherche de Chimie Paris PSL Research University, Chimie ParisTech-CNRS, 11 Rue P. et M. Curie, 75005 Paris, France
,
a   Institut de Recherche de Chimie Paris PSL Research University, Chimie ParisTech-CNRS, 11 Rue P. et M. Curie, 75005 Paris, France
b   Institut de Chimie de Nice, Université Nice Sophia Antipolis UMR CNRS, 7272 Parc Valrose, 06108 Nice, France
,
a   Institut de Recherche de Chimie Paris PSL Research University, Chimie ParisTech-CNRS, 11 Rue P. et M. Curie, 75005 Paris, France
c   Institute of Molecular Sciences University of Bordeaux, 351, Cours de la Libération, 33405 Talence, France   Email: patrick.toullec@u-bordeaux.fr
› Author Affiliations
This work was supported by a grant (ANR-13-JS07-0010) from the Agence Nationale de la Recherche. This work was also supported by the Ministère de l’Education et de la Recherche and the Centre National de la Recherche Scientifique (CNRS).

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Publication History

Received: 21 February 2018

Accepted after revision: 14 March 2018

Publication Date:
09 April 2018 (online)


Abstract

Lewis bases were evaluated as catalysts for halocarbocyclization reactions of alkynylstyrenes and a cinnamylaniline derivative. Phosphines and phosphorus chalcogenides exhibited high activity for the conversion of alkynylstyrenes in the presence of N-halosuccinimides with up to a 30-fold increase of the initial reaction rate with respect to the background reaction. Phosphorus sulfides and selenides showed the best catalytic activity for the iodocarbocyclization of a cinnamylaniline derivative in the presence of diiodohydantoin. An asymmetric variant of the iodocarbocyclization reaction of an alkynylstyrene using a chiral phosphorus selenide resulted in a modest enantioselectivity.

Supporting Information