Copper chloride-catalyzed S-arylation of arenethiols is effected with activated aryl chlorides in neat water by using ethylenediamine as the pair ligand/base. This convenient, environmentally more friendly procedure for the coupling of aryl chlorides allows the arylation between sterically demanding coupling partners.
Nickel–Schiff base complex catalyzed C–S cross-coupling of thiols with organic chlorides
作者:Prasanta Gogoi、Sukanya Hazarika、Manas J. Sarma、Kuladip Sarma、Pranjit Barman
DOI:10.1016/j.tet.2014.08.020
日期:2014.10
We report an efficient, mild and convenient synthetic protocol for the C–S cross-coupling reaction of various aryl, benzyl, allyl chlorides and thiols using 5 mol % Nickel–Schiff base catalyst with NaOH as the base, in DMF at 70 °C. Using this protocol, we have shown that a variety of aryl sulfides can be synthesized in excellent yields from readily available organic chlorides and thiols.