Magnetic resonance in chemistry

13C NMR chemical shifts, in some N??chloro??2, 6??diarylpiperidin??4??ones

M Ul Hasan, M Arab

文献索引：Hasan, Misbah Ul; Arab, M. Magnetic Resonance in Chemistry, 1987 , vol. 25, p. 987 - 989

全文：HTML全文

被引用次数: 1

摘要

Abstract The 13 C shifts in several N-chloro-2, 6-diarylpiperidin-4-ones have been measured and compared with previously reported sifts in the corresponding 2, 6- diarylpiperidones. The shifts of the α-carbons in these compounds move downfield by 12–13 ppm, which can be attributed to the increased electronegativity of the nitrogen atoms. The changes in the chemical shifts of the β-carbons are minimal. Surprisingly, the absorptions ...