Synthesis 2014; 46(19): 2595-2600
DOI: 10.1055/s-0034-1378374
paper
© Georg Thieme Verlag Stuttgart · New York

Enantioselective Organocatalytic Michael Addition of Cyclopentane-1,2-diones to Nitroolefins

Gert Preegel
a   Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
,
Artur Noole
a   Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
,
Kaja Ilmarinen
a   Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
,
Ivar Järving
a   Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
,
Tõnis Kanger
a   Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
,
Tõnis Pehk
b   National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia   Fax: +372(620)2808   Email: margus.lopp@ttu.ee
,
Margus Lopp*
a   Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
› Author Affiliations
Further Information

Publication History

Received: 30 April 2014

Accepted after revision: 07 June 2014

Publication Date:
15 July 2014 (online)


Abstract

Organocatalytic Michael additions of cyclopentane-1,2-dione to different nitroolefins have been investigated. Cyclopentane-1,2-dione undergoes an organocatalytic reaction with substituted nitroolefins giving 3-substituted products in good to high yields (48–97%) and good stereoselectivity (up to 76% ee).

Supporting Information