Nickel-catalyzed cross-coupling reactions of benzylic zinc reagents with aromatic bromides, chlorides and tosylates
作者:Matthias A. Schade、Albrecht Metzger、Stephan Hug、Paul Knochel
DOI:10.1039/b803072c
日期:——
Benzylic zinc reagents prepared by direct insertion of zinc to benzylic chlorides in the presence of LiCl undergo smooth cross-coupling reactions with aromatic chlorides, bromides and tosylates using Ni(acac)(2) and PPh(3) as a catalyst system.
Preparation of Functionalized Organoindium Reagents by Means of Magnesium Insertion into Organic Halides in the Presence of InCl<sub>3</sub>at Room Temperature
procedure for the direct preparation of triorganoindium reagents from organichalides by means of magnesium insertion in the presence of InCl3 and LiCl is reported (see scheme). The organoindium reagents are obtained in good yields from functionalized aryl, heteroaryl, and alkyl bromides and benzyl chlorides at 25 °C in THF within 4 h. Moreover, the resulting organoindium reagents could be efficiently