4-15N-2,3,5-Trimethylpyrazine (A) was synthesized by dechlorination of 4-15N-6-chloro-2,3,5-trimethylpyrazine (I), the key intermediate, derived from 15N-D~alanine (a). 1-15N-2, 3,5-Trimethylpyrazine (2) was prepared by decarboxylation of 1-15N-2,3,5-trimethyl-pyrazine-6- carboxylic acid (10) obtai
15N NMR Spectra of Pyrazine, Methylpyrazines and TheirN-Oxides
✍ Scribed by Chiseko Sakuma; Mikiko Maeda; Katsumi Tabei; Akihiro Ohta; Ablikim Kerim; Teruo Kurihara
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 301 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Comprehensive 16N NMR data for pyrazine and all methylpyrazine derivatives and their 1 and 4-oxides and 1,4-dioxides are reported. The "N signals of unsymmetrically substituted methylpyrazine derivatives
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