Epimeric 2-norbornyl cations in the solvolysis of 6-exo- and 6-endo-substituted 2-exo-norbornyl p-toluenesulfonates
作者:Cyril A. Grob、Bettina Günther、Reinhard Hanreich、Adrian Waldner
DOI:10.1016/0040-4039(81)80009-3
日期:1981.1
Solvolysis of 6-exo- and 6-endo-substituted 2-exo-norbornyl tosylates and , respectively, yields identical or different product mixtures depending on the inductive effect of the substituent, indicating that induction involves graded σ-participation.
Polar<i>versus</i>steric effects in the solvolysis of 6<i>endo</i>-substituted 2<i>endo</i>-norbornyl<i>p</i>-toluenesulfonates. Norbornanes, Part 8
作者:Cyril A. Grob、Bettina Günther、Reinhard Hanreich
DOI:10.1002/hlca.19820650718
日期:1982.11.3
The solvolysisrates and products of the 6endo-R-substituted 2endo-norbornyl toluenesulfonates 6a–6i have been determined. The rates of 6a–6g correlate with the inductive constants σ the 6endo-substituents and are not related to the size of the latter. It is therefore concluded that polar rather than steric effects control the exo/endo-rate ratios of norbornyl sulfonates. Products are derived mainly
Norbornanes. Part 10. Solvolysis of the Stereoisomeric 6-Cyano-2-norbornylp-Toluenesulfonates. A Correction
作者:Cyril A. Grob、Danielle Herzfeld
DOI:10.1002/hlca.19820650809
日期:1982.12.15
The solvolysis products of the stereoisomeric 6-cyano-2-norbornyl p-toluene sulfonates 1-4 (R CN) in dioxane/water 7 : 3 have been determined. In contrast to an earlier report the 6exo-cyano-2exo-norbornyl p-toluenesulfonate (1; RCN) yields 30% of the 2endo-alcohol 9 (RCN) beside the 2exo-alcohol 10 and the norbornenes 12 and 13. The results confirm that - I substituents at C(6) reduce 1,3-bridging