The Journal of Organic Chemistry

N-Nitroamides and N-Nitrocarbamates. III. Rotational Isomerism, Steric Effects, and Physical Properties at Low Temperatures1

EH White, MC Chen, LA Dolak

文献索引：White,E.H. et al. Journal of Organic Chemistry, 1966 , vol. 31, p. 3038 - 3046

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被引用次数: 21

摘要

Infrared, ultraviolet, and nuclear magnetic resonance spectra (at room temperature and at low temperatures), solvent effects, and substituent effects have been used to show that the double carbonyl peaks of the N-nitrocarbamates stem from rotational isomerism involving the carboxyl groups, and not from Fermi resonance. Cyclic nitrocarbamates in which this type of rotation is impossible have only a single carbonyl band in the infrared. The rotation ...