Tetrahedron 2018-03-14

Palladium(II)-N-heterocyclic carbene-catalyzed direct C2- or C5-arylation of thiazoles with aryl bromides

Murat Kaloğlu, İsmail Özdemir

Index: 10.1016/j.tet.2018.03.026

Full Text: HTML

Abstract

Herein we report, a series of new benzimidazolium chlorides as N-heterocyclic carbene (NHC) ligand and their corresponding palladium(II)-NHC complexes with the general formula [PdCl2(NHC)2] were synthesized. All new compounds were characterized by 1H NMR, 13C NMR, IR spectroscopy and elemental analysis techniques. The catalytic activity of palladium(II)-NHC complexes was investigated in the direct C2- or C5-arylation of thiazoles with aryl bromides in presence of palladium(II)-NHC at 150 °C for 1 h. These complexes exhibited the good catalytic performance for the direct arylation of thiazoles. The arylation of thiazoles regioselectively produced C2- or C5-arylated thiazoles in moderate to high yields.

Latest Articles:

Synthesis of chiral α-amino anilides via a DMEDA-promoted selective C─N coupling reaction of aryl halides and α-aminoamides

2018-04-11

[10.1016/j.tet.2018.03.003]

A site isolation-enabled organocatalytic approach to enantiopure γ-amino alcohol drugs

2018-04-11

[10.1016/j.tet.2018.04.022]

Chemoselectivity in the Kosugi-Migita-Stille coupling of bromophenyl triflates and bromo-nitrophenyl triflates with (ethenyl)tributyltin

2018-04-10

[10.1016/j.tet.2018.02.051]

Process design methodology for organometallic chemistry in continuous flow systems

2018-04-07

[10.1016/j.tet.2018.04.020]

Substrate engineering: Effects of different N-protecting groups in the CAL-B-catalysed asymmetric O-acylation of 1-hydroxymethyl-tetrahydro-β-carbolines

2018-04-07

[10.1016/j.tet.2018.04.012]

More Articles...