Issue 8, 2016

Synthesis of N-heterocyclic carbene–PdCl2–(iso)quinoline complexes and their application in arylamination at low catalyst loadings

Abstract

A new type of N-heterocyclic carbene–PdCl2–(iso)quinoline complexes 3 were successfully achieved in acceptable to good yields from easily available starting materials under mild conditions, and their structures were unambiguously confirmed using X-ray single crystal diffraction. Furthermore, their catalytic activity toward Buchwald–Hartwig arylamination of aryl chlorides with primary and secondary amines was fully tested. Under the optimal reaction conditions, the expected arylated amines can be obtained in high to excellent yields at low catalyst loadings (0.005–0.05 mol%). It may be worth noting here that comparison of these complexes with other well-defined and easily available NHC–Pd(II) complexes bearing different N-containing ancillary ligands was also carried out, showing their superior catalytic activity over all others.

Graphical abstract: Synthesis of N-heterocyclic carbene–PdCl2–(iso)quinoline complexes and their application in arylamination at low catalyst loadings

Supplementary files

Article information

Article type
Paper
Submitted
05 Jan 2016
Accepted
25 Jan 2016
First published
25 Jan 2016

Org. Biomol. Chem., 2016,14, 2563-2571

Synthesis of N-heterocyclic carbene–PdCl2–(iso)quinoline complexes and their application in arylamination at low catalyst loadings

F. Liu, Y. Zhu, L. Song and J. Lu, Org. Biomol. Chem., 2016, 14, 2563 DOI: 10.1039/C6OB00013D

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