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Methyl Group Substituent Effects on Chemical Shifts in the Nuclear Magnetic Resonance Spectra of Ethylenic Systems

โœ Scribed by Reddy, G. S.; Goldstein, J. H.


Book ID
126941226
Publisher
American Chemical Society
Year
1961
Tongue
English
Weight
648 KB
Volume
83
Category
Article
ISSN
0002-7863

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The "C NMR spectra of 21 catechin derivatives substituted at C-6/C-S by bromine and/or hydrogen and at oxygen by methyl, acetyl and/or hydrogen have been analysed in deuteriated acetone and chloroform. When a methoxy group is flanked by two bulky orrho substituents (6-Br and C4), the M e 0 and ortho