13 C n.m.r. investigation on the nitrogen methylation of some azabenzenes | Zendy

Van De Weijer Peter | Zendy; Mohan Chandra | Zendy

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13 C n.m.r. investigation on the nitrogen methylation of some azabenzenes

Author(s) -

Van De Weijer Peter,

Mohan Chandra

Publication year - 1977

Publication title -

organic magnetic resonance

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0030-4921

DOI - 10.1002/mrc.1270090111

Subject(s) - pyrazine , pyridazine , pyridine , pyrimidine , methylation , chemistry , protonation , nitrogen , medicinal chemistry , stereochemistry , organic chemistry , biochemistry , ion , gene

The 1 H and 13 C n.m.r. spectra of N ‐methylated pyridine, pyridazine, pyrimidine and pyrazine and N , N ‐dimethylated pyrimidine and pyrazine have been recorded and analysed. The change in the 13 C chemical shifts under the influence of N ‐methylation (Δδ) in the diazabenzenes could be predicted by the Δδ values of pyridine. A comparison of the Δδ values of N ‐methylation with those of N ‐protonation showed that both reactions have a similar effect.

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