R. Hara et al., SUBSTITUENT-DEPENDENT SELECTIVE REPLACEMENT OF ALKYNE MOIETIES OF ZIRCONACYCLOPENTADIENES VIA C-C BOND-CLEAVAGE REACTION, Chemistry Letters, (11), 1996, pp. 1003-1004
Replacement of an alkyne moiety of zirconacyclopentadienes via beta,be
ta'-carbon-carbon bond cleavage was highly dependent on their substitu
ents, Complete differentiation between diphenylacetylene and 4-octyne
in the reaction with butyronitrile was demonstrated.