Bromination of 2,3-dibromobenzobarrelene at 77 °C was studied and 2,3,5-tribromobenzobarrelene was obtained in high yield. All compounds were characterised properly, especially by NMR spectra.
DastanA., DemirÜ. and BalciM., J. Org. Chem., 1994, 59, 6534.
18.
DastanA., TaskesenligilY., TümerF. and BalciM., Tetrahedron, 1996, 52, 14005.
19.
TutarA., TaskesenligilY., CakmakO., AbbasogluR. and BalciM., J. Org. Chem., 1996, 61, 8297.
20.
MenzekA., SaracogluN., DastanA., BalciM., and AbbasogluR., Tetrahedron, 1997, 53, 14451.
21.
AltundasA., DastanA., McKeM.M. and BalciM., Tetrahedron, 2000, 56, 6115.
22.
HBr elimination takes place via syn-elimination in molecule 34. Gronert explained that cis-elimination could occur more readily than trans-elimination in bicyclic systems; S. Gronert. J. Org. Chem. 1994, 59, 7046.
