... Chem. Soc. 1977, 99, 8507. (b) Cichra, D. A.; Duncan, CD; Berson, . j A. Zbid. 1980, 102, 6527. SN2 Displacements at 2-Norbornyl Brosylates Klaus Banert and Wolfgang Kirmse* Abteilung fur Chemie ... 0002-7863/82/1504-3766$01.25/0 0 1982 American Chemical Society