Premium
Chemical shift changes on conversion of benzofurans to dihydrobenzofurans; the large effect on the proton ortho to the furan oxygen
Author(s) -
Kalidhar Suraj B.
Publication year - 1990
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260281006
Subject(s) - furan , benzofuran , chemistry , benzene , oxygen , ring (chemistry) , chemical shift , proton , photochemistry , organic chemistry , medicinal chemistry , computational chemistry , physics , quantum mechanics
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.