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Proton magnetic resonance studies of compounds with bridgehead nitrogen atoms. XIV .: The influence of an axial 5‐methyl group on the chemical shifts of C2 methylene protons in 1,3‐heterosystems
Author(s) -
Crabb T. A.,
Chivers P. J.,
Jones E. R.,
Newton R. F.
Publication year - 1970
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.5570070325
Subject(s) - chemistry , methylene , proton magnetic resonance , proton , methyl group , nitrogen , group (periodic table) , chemical shift , nitrogen atom , electromagnetic shielding , distortion (music) , nuclear magnetic resonance , crystallography , stereochemistry , medicinal chemistry , organic chemistry , physics , amplifier , quantum mechanics , cmos , electronic engineering , electrical engineering , engineering
The shielding of a C‐2 axial proton by an axial C‐5 methyl group in 1,3‐heterocyclic systems is described and explained in terms of conformational distortion.