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Lorentzen M, Kalvet I, Sauriol F, Rantanen T, Jørgensen KB, Snieckus V. Atropisomerism in Tertiary Biaryl 2-Amides: A Study of Ar–CO and Ar–Ar′ Rotational Barriers. J Org Chem 2017. [DOI: 10.1021/acs.joc.7b00890] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marianne Lorentzen
- Faculty
of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
| | - Indrek Kalvet
- Snieckus
Innovations, Queen’s University, Kingston, ON K7L 3N6, Canada
- Institute
of Chemistry, University of Tartu, Ravila 14A, 50411 Tartu, Estonia
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | - Francoise Sauriol
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | - Toni Rantanen
- Snieckus
Innovations, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | - Kåre B. Jørgensen
- Faculty
of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
| | - Victor Snieckus
- Snieckus
Innovations, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
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Danopoulos AA, Braunstein P, Rezabal E, Frison G. Unprecedented directed lateral lithiations of tertiary carbons on NHC platforms. Chem Commun (Camb) 2015; 51:3049-52. [DOI: 10.1039/c4cc08434a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Deprotonation of the tautomeric mixture of 4-amido-imidazoliums and 4-amino-N-heterocyclic carbenes led to dilithiated dianionic functional NHCs, via an unprecedented regioselective, directed remote lateral lithiation of a tertiary CHMe2 carbon. DFT calculations support that the nature of products is under thermodynamic control.
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Affiliation(s)
- Andreas A. Danopoulos
- Institute for Advanced Study (USIAS)
- Université de Strasbourg (UdS)
- 67081 Strasbourg Cedex
- France
- Laboratoire de Chimie de Coordination
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination
- Institut de Chimie (UMR 7177 CNRS)
- UdS
- 67081 Strasbourg Cedex
- France
| | - Elixabete Rezabal
- Laboratoire de Chimie Moléculaire
- Ecole Polytechnique and CNRS
- 91128 Palaiseau Cedex
- France
| | - Gilles Frison
- Laboratoire de Chimie Moléculaire
- Ecole Polytechnique and CNRS
- 91128 Palaiseau Cedex
- France
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