abstract |
Catalyst compositions comprising a compound of the formula MX(CuCN) n , wherein M is lithium or magnesium, X is chloro, bromo, or iodo and n is one, two or three, in solution in a solvent selected from e.g. tetrahydrofuran, tetrahydropyran and diethyl ether are useful in reactions for the alkylation of a Grignard reagent by an organic halide or an organic sulfonate ester. |