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Chemical shift changes on conversion of benzofurans to dihydrobenzofurans; the large effect on the proton ortho to the furan oxygen

✍ Scribed by Suraj B. Kalidhar

Book ID: 102528500
Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 128 KB
Volume: 28
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260281006

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✦ Synopsis

Abstract

A comparison of the ^1^H NMR spectra of benzofuran and its dihydrofuran shows that the benzene proton ortho to the furan oxygen undergoes a larger change in chemical shift than those for the other protons. This observation is useful for locating the fusion sites of the furan ring in naturally occurring benzofuran derivatives.

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