Reduction of Cp2ZrCl2 with mischmetall: A new method for generating an efficient 'Cp2Zr' equivalent

摘要

A "Cp2Zr" equivalent is generated under mild conditions (THF, room temperature) by reducing Cp2ZrCl2 with cheap and readily available mischmetall (an alloy of Ce, La, Nd, and Pr). Coupling reactions, including those of terminal alkynes, can efficiently be achieved by using this reagent.