The zirconocene induced coupling of benzyne with nitriles: Synthesis, structure and reactions of novel azametallacyclopentenes - Buchwald, S.L.; Sayers, A.; Watson, B.T.; Dewan, J.C. (Elsevier)
A series of novel azazirconacyclopentenes have been prepared by the thermolysis of diphenylzirconocene in the presence of one equivalent of a wide variety of nitriles. An X-ray crystal structure shows these metallacycles to be dimeric in the solid state.
http://dx.doi.org/10.1016/S0040-4039(00)95483-2
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