Premium
Stereoselective hetero‐Diels–Alder reactions: structure determination of new xanthenedione derivatives by NMR spectroscopy and x‐ray crystallography
Author(s) -
Giraud Anne,
Vanelle Patrice,
Giraud Luc
Publication year - 1999
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/(sici)1097-458x(199901)37:1<77::aid-mrc397>3.0.co;2-q
Subject(s) - chemistry , two dimensional nuclear magnetic resonance spectroscopy , structural isomer , nuclear magnetic resonance spectroscopy , spectroscopy , stereoselectivity , carbon 13 nmr , stereochemistry , proton nmr , crystallography , organic chemistry , catalysis , physics , quantum mechanics
The proton and carbon spectra of chromane derivativeswere completely assigned by the use of 1 H, 13 Cand 2D NMR spectroscopy, including NOESY and 2D INADEQUATE. Theunambiguous configurational assignments of all regioisomers wereachieved via 2D NOESY. The structure of the regioisomer 7A wasconfirmed using x‐ray diffraction. © 1999 John Wiley& Sons, Ltd.