F. Jakle et al., NOVEL ANSA-FERROCENES WITH O-PHENYLENE-TYPE BRIDGES BY B-N ADDUCT FORMATION, Journal of the Chemical Society, Chemical Communications, (17), 1995, pp. 1765-1766
1,1'-Bis[bromo(methyl)boryl]ferrocene 1 reacts with 4-bromo-3,5-dimeth
ylpyrazole to give a novel air-stable ansa-ferrocene where the self-as
sembly of B-N adducts provides an alternative to C-C coupling.