Substituent effects on1H chemical shifts. I—complete1H chemical shift assignments of methyl-substituted cyclic systems
作者:Julie Fisher、Michael J. Gradwell
DOI:10.1002/mrc.1260300412
日期:1992.4
1H chemical shift assignments are presented for 2‐methyladamantane, 2‐methylnorbornane (endo and exo) and 2‐methylnorbornene (endo and exo). Resonance assignment was achieved using a variety of 1D and 2D homo‐ and heteronuclear (1H–13C) experiments. The methyl group‐induced substituent chemical shift (SCS) is derived and the SCS of protons vicinal to this group is discussed.
给出了 2-甲基金刚烷、2-甲基降冰片烷(内型和外型)和 2-甲基降冰片烯(内型和外型)的 1H 化学位移分配。使用各种 1D 和 2D 同核和异核 (1H-13C) 实验实现了共振分配。导出了甲基诱导的取代基化学位移 (SCS),并讨论了该基团附近质子的 SCS。