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Spectroscopy Letters
An International Journal for Rapid Communication
Volume 23, 1990 - Issue 5
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Original Articles

Benzene Induced 1H NMR Shifts of Chromeno-Compounds: An Aid to Differentiate Linear and Angular Chromenoflavones

A. Banerji Chemical Ecology Section, Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Bombay, 400085, India
&
D. L. Luthria Chemical Ecology Section, Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Bombay, 400085, India
Pages 555-565 | Received 08 Aug 1989, Accepted 10 Sep 1989, Published online: 24 Oct 2006
 
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Abstract

Benzene-induced shifts (BIS) in the 1H NMR spectra of nine chromeno-compounds have been studied. It provides a simple non-destructive technique for distinguishing linear isomers of chromenoflavones from their angular counterparts. BIS also assists in the assignment of chromene proton signals in chromeno-compounds.

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