Molecules, Vol. 24, Pages 1575: Spiro Indane-Based Phosphine-Oxazolines as Highly Efficient P,N Ligands for Enantioselective Pd-Catalyzed Allylic Alkylation of Indoles and Allylic Etherification

Molecules, Vol. 24, Pages 1575: Spiro Indane-Based Phosphine-Oxazolines as Highly Efficient P,N Ligands for Enantioselective Pd-Catalyzed Allylic Alkylation of Indoles and Allylic Etherification
Molecules doi: 10.3390/molecules24081575
Authors:
Zhongxuan Qiu
Rui Sun
Kun Yang
Dawei Teng

A series of indane-based phosphine-oxazoline ligands with a spirocarbon stereogenic center were examined for palladium-catalyzed asymmetric allylic alkylation of indoles. Under optimized conditions, high yields (up to 98%) and enantioselectivities (up to 98% ee) were obtained with a broad scope of indole derivatives. The ligand was determined to be the most efficient P,N-ligand for this reaction. Moreover, the ligand was also efficient for Pd-catalyzed asymmetric allylic etherification with hard aliphatic alcohols as nucleophiles.

Source: Molecules - April 20, 2019 Category: Chemistry Authors: Zhongxuan Qiu Rui Sun Kun Yang Dawei Teng Tags: Article Source Type: research