Volume 58, Issue 10 pp. 3193-3197
Communication

Chiral Lithium Amido Aryl Zincates: Simple and Efficient Chemo- and Enantio-Selective Aryl Transfer Reagents

Dr. Pauline Chaumont-Olive

Dr. Pauline Chaumont-Olive

Normandie Univ, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France

Search for more papers by this author
Dr. Mathieu Rouen

Dr. Mathieu Rouen

Normandie Univ, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France

Search for more papers by this author
Dr. Gabriella Barozzino-Consiglio

Dr. Gabriella Barozzino-Consiglio

Normandie Univ, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France

Search for more papers by this author
Amel Ben Abdeladhim

Amel Ben Abdeladhim

Normandie Univ, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France

Search for more papers by this author
Dr. Jacques Maddaluno

Dr. Jacques Maddaluno

Normandie Univ, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France

Search for more papers by this author
Dr. Anne Harrison-Marchand

Corresponding Author

Dr. Anne Harrison-Marchand

Normandie Univ, UNIROUEN, INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France

Search for more papers by this author
First published: 17 January 2019
Citations: 16

Graphical Abstract

Chemo- and enantio-selective nucleophilic aryl transfer: The key reactant is a chiral tricoordinated lithium amido aryl zincate of which the chiral appendage is simply recovered and reused. The arylation leaves intact sensitive functions such as esters, nitriles, ketones or enolisable sites, while running with aldehyde groups in good yields and high ee values, this whatever the ortho, meta, or para substituent borne by the substrate if aromatic.

Abstract

An enantioselective aryl transfer is promoted using chiral tricoordinated lithium amido aryl zincates that are easily accessible reagents and whose chiral appendage is simply recovered for reuse. The arylation reaction is run in good yields (60 % average on twenty substrates) and high enantiomeric excesses (95 % ee average). This occurs whatever the ortho, meta, or para substituent borne by the substrate and a complete chemoselectivity is observed with respect to the aldehyde function. Sensitive groups such as nitriles, esters, ketones, and enolisable substrates resist to the action of the ate reagent, warranting a large scope to this methodology.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.