CJCU

Chem. J. Chinese Universities ›› 1987, Vol. 8 ›› Issue (3): 255.

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Studies on Natural-Abundance Nitrogen-15 Nuclear Magnetic Resonance Spectroscopy (Ⅰ)--Long-Range Interaction on Nitrogen-15 Chemical Shifts of 4-Substituted Piperidines and Their Correlation with Carbon-is Chemical Shifts

Yang Li, Liu Peiqi, Kong Suling, Dong Ying, Chen Yaozu   

  1. Department of Chemistry, Lanzhou University, Lanzhou
  • Received:1985-11-21 Online:1987-03-24 Published:1987-03-24

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Abstract: Natural-abundance 15N and 13CNMR chemical shifts of eight 4-substituted 2,2,6,6-tetramethylpiperidines have been measured. It is found that the 15N chemical shift is correlated with the electronegativity of the 4-substituent, indicating a long-range interaction of the 4-substituent on the 15N chemical shift. Alinear relationship is also present between the 13C chemical shifts and the electronegativity of the 4-substituted atoms.

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