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Structure and Stereochemistry of Pyrazolines, Precursors to gem ‐Dimethylcyclopropane
Author(s) -
Martin MarieThérèse,
Gharbi Rafik,
Khemiss Abdelkader,
Mighri Zine
Publication year - 1997
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(199704)35:4<251::aid-omr71>3.0.co;2-q
Subject(s) - chemistry , stereochemistry , two dimensional nuclear magnetic resonance spectroscopy , chemical shift , carbon 13 nmr , nuclear overhauser effect , diene , nuclear magnetic resonance spectroscopy , organic chemistry , natural rubber
A complete and unambiguous assignment of the 1 H and 13 C NMR spectra of 5,5‐dimethyl‐4‐( p ‐methoxyphenyl)‐3‐(naphthalen‐2‐yl‐carbonyl)‐Δ 2 ‐pyrazoline, 2‐[4‐( p ‐methoxyphenyl)‐5,5‐dimethyl‐4,5‐dihydro‐3 H ‐pyrazol‐3‐yl]‐5,5‐dimethyl‐2‐(naphthalen‐2‐yl)‐2,5‐dihydro[1,3,4]oxadiazole, 2,5,5,9‐tetramethyl‐3,4‐diazatricyclo[6.3.1.0 2,6 ]‐ dodeca‐3,9‐diene‐7,11‐dione and 2,5,5,12,12,9‐hexamethyl‐3,4,10,11‐tetraazatetracyclo[1.3.6.6.0 2,6 .0 9,13 ]undeca‐ 3,11‐diene‐7,14‐dione was accomplished by inverse two‐dimensional chemical shift correlation methods and their conformations were determined by NOESY experiments. © 1997 by John Wiley & Sons, Ltd.