Transmission of polar substituent effects through the bicyclo [2.2. 2] octane ring system as monitored by NMR shifts: A 13C NMR study of 4??substituted??1?? …

W Adcock, AN Abeywickrema, VS Iyer…

文献索引：Adcock, William; Abeywickrema, Anil N.; Iyer, V. Sankar; Kok, Gaik B. Magnetic Resonance in Chemistry, 1986 , vol. 24, p. 213 - 220

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被引用次数: 17

摘要

Abstract Carbon-13 substituent chemical shifts (SCS) are reported for the methyl group of a series of 4-substituted 1-methylbicyclo [2.2. 2] octanes covering a wide range of electronic substituent effects. Unlike the 13 C SCS of the α-carbon centre in various unsaturated side- chain probes attached to the bicyclo [2.2. 2] octane ring, which are mainly proportional to substituent field effects (σ F), the 13 CH 3, SCS are found to display a definitive statistical ...