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A Ni(OAc)2/Ag(OTf) catalysed coupling of aryl alkynes and propargylic alcohol/ether/ester gave the corresponding unsymmetrical 1,3-diynes in good to excellent yields.

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dl‐[Ni(Phen)3]Cl2/Ag2CO3 assisted coupling of alkynes with 1,3‐dicarbonyl compounds gave the corresponding substituted furans in good to excellent yields, and with good substrate scope. Beside the novel C–H functionalization and tandem coupling, the reaction also represents 100 % atomic economy.

Herein, we report a heterobimetallic Pd-Sn catalyst for the carbonylative Suzuki coupling, aminocarbonylation reaction, and carbonylative Sonogashira coupling of aryl halides with boronic acid, amine, and aromatic alkyne leading to...

The reaction of benzyl bromides and chlorides with aluminium metal powder or foil (1.2 eqv.) in the presence of catalytic nickel nitrate (10 mol%) in water at room temperature resulted in homocoupling to the corresponding bibenzyl products which were isolated in moderate to good yields. In sharp contrast, the same reaction in organic solvents like dichloromethane, dimethylformamide, acetonitrile, methanol and toluene yielded only a trace amount of the desired product. The scope of the reaction was tested with substituents on the aromatic ring such as Me-, Cl-, CN-, F-, NO 2-, Ph-as well as 2 • benzyl halides.

Figure 1. Mode of activation of substrates in the catalytic Friedel− Crafts reaction. Article pubs.acs.org/Organometallics