No abstract

The reaction of trimethylsilyl-substituted alkynes with 0.5 equivalents of Cp2ZrCl2 and 1 equivalent of Et3Al in toluene at room temperature gives products of the homo-coupling in good yield.

No abstract

It was found that the reaction of aliphatic carboxylic acids with secondary amines under the action of tantalum (V) chloride leads to the selective formation of carboxamides. N,N-Diethyladamantane-1-carboxamide were synthesized with a yield of 73% as well.