The role of aromatic groups in the Tobey
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Henry J. Shine; Paramashivappa Rangappa
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Article
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2007
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John Wiley and Sons
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English
β 171 KB
## Abstract The TobeyβSimon (additivity) rule for aromatic groups which was devised about 40 years ago has been found to need revision. The rule shows an aromatic group attached to a Cο£ΎC double bond as causing a downfield chemical shift of a __cis__βrelated vinylic proton and a small upfield shift