Reversible addition of alkynes to gallium complex of chelating diamide ligand.
Different alkynes add reversibly to the gallium complex of the dpp-Bian dianion. The reactions proceed with addition of the alkynes across the Ga-N-C fragment resulting in carbon-carbon and carbon-gallium bonds. In the case of 3 and 4 a full elimination of the alkyne takes place at T < 100 degrees C, whereas with adducts 5 and 6 it occurs at heating to ca. 200 degrees C.
Fedushkin
Igor L
IL
G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina str 49, 603950 Nizhny Novgorod, Russian Federation. igorfed@iomc.ras.ru
Nikipelov
Alexander S
AS
Lyssenko
Konstantin A
KA