Aa. Bobylyova et al., ADDITION OF DIBROMOCARBENE TO TRICYCLO[4.3.0.0(3,7)]NONA-4,8-DIENE(BREXADIENE) - SYNTHESIS OF 1-TETRABROMOTRICYCLO[5.4.0.0(3,8)]UNDECA-5,9-DIENE, Mendeleev communications, (3), 1996, pp. 112-113
Addition of dibromocarbene to tricyclo[4.3.0.0(3,7)]nona-4,8-diene (br
exadiene) under phase-transfer catalysis conditions yields the only tr
icyclic tetrabromide, exo-4,5,10,exo-11-tetrabromotricyclo[5.4.0.0(3,8
)] undeca-5,10-diene.