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A Carbon‐13 and nitrogen‐15 NMR study of some nitrogen heterocycles
Author(s) -
Buchman Russell,
Komoroski Richard A.
Publication year - 1980
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570170548
Subject(s) - chemistry , ring (chemistry) , nitrogen , chemical shift , carbon 13 nmr , carbon fibers , organic chemistry , medicinal chemistry , stereochemistry , materials science , composite number , composite material
Abstract A number of phenyl‐substituted nitrogen heterocycles and the corresponding 2,6‐diethylphenyl derivatives were examined by 13 C nmr in order to verify that the heterocyclic ring system was the same in both series. The heterocyclic ring carbon shifts did not differ substantially between the phenyl and 2,6‐diethylphenyl derivatives for all systems except one, where substantial differences were also seen in the 15 N chemical shifts. Acetylated derivatives were prepared to confirm the cyclization mode in this latter case.