Journal ArticleDOI
Ring B conformation in 9,10-dihydroanthracenes by nuclear magnetic resonance
TLDR
The nuclear magnetic resonance data of some 9,10-dihydroanthracenes with substituents on the aromatic rings allow the assignment of a pseudoboat conformation for the central ring as mentioned in this paper.Abstract:
The nuclear magnetic resonance data of some 9,10-dihydroanthracenes with substituents on the aromatic rings allow the assignment of a pseudoboat conformation for the central ring. The dihedral angle formed by the two planes in the molecule changes according to the substituents.read more
Citations
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Journal ArticleDOI
The conformational analysis of 1,4-cyclohexadienes: 1,4-dihydrobenzenes, 1,4-dihydronaphthalenes, and 9,10-dihydroanthracenes
Journal ArticleDOI
Cyclotetraveratrylene : Characterization and conformational properties☆
James D. White,B.D. Gesner +1 more
TL;DR: In this article, the preparation characterization of cyclotetraveratrylene (6) was described and the conformational mobility associated with the cyclododecatetraene ring of 6 was studied by variable temperature proton magnetic resonance spectroscopy over the temperature range 229-319K Activation parameters for the interconversion of 6A were obtained: F≠(T) 12sd8-13·7 (± 0·3) kcal and S≠ ca - 11 (± 2) eu.
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The nuclear magnetic resonance of heterocyclic compounds related to anthracene
TL;DR: In this paper, the NMR spectra of a series of heterocyclic compounds analogous to anthracene have been investigated at 220 and 60 MHz and the chemical shift of the proton ortho to the heteroatom was shown to be linear with respect to the electron density on heteroatoms, but otherwise chemical shifts are independent of electron density.
Journal ArticleDOI
Nuclear magnetic resonance spectrometry
TL;DR: This review covers the published literature from July 1983 to August 1985 although some citations of other work are also included, hoping that the books, reviews, and various citations will be a useful guide to the reader.
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Conformational flexibility of six-membered dihydrocycles
TL;DR: In this paper, the conformational flexibility of six-membered 1,4-and 1,2-dihydrocycles has been studied and the effect of the conformability of the rings on physicochemical characteristics of compounds is considered.
References
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Book
The systematic identification of organic compounds
TL;DR: In this paper, the authors present a survey of the organic chemistry literature, including preliminary examination, physical properties, and elemental analysis, and a classification of organic compounds by solubility.
Journal ArticleDOI
Concerning the problems involved with use of external references for variable temperature chemical shift measurements
TL;DR: In this paper, the importance of making bulk susceptibility corrections to nuclear magnetic resonance chemical shifts measured versus an external reference is emphasized, and the special significance of this correction for variable temperature studies is demonstrated by comparing data obtained with external and internal references for uridine-5′-phosphate.