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Solvent effects in N.M.R. spectroscopy. Determination of configurations of three-membered ring carbonyl compounds by benzene induced chemical shifts

✍ Scribed by David W. Boykin Jr.; Andrew B. Turner; Robert E. Lutz

Publisher: Elsevier Science
Year: 1967
Tongue: French
Weight: 326 KB
Volume: 8
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)71569-3

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✦ Synopsis

Interpretable chemical shifts of protons in compounds containing polar functional groups induced by solvents which have diamagnetic snisotropic properties are now well documented (3,4,5).

Recent studies on solvent induced shifts

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Solvent effects in N.M.R. spectroscopy.

Solvent effects in N.M.R. spectroscopy. I. Chemical shifts induced by benzene in some steroidal ketones and acetates

✍ Norman S. Bhacca; Dudley H. Williams 📂 Article 📅 1964 🏛 Elsevier Science 🌐 French ⚖ 254 KB

The C-18 and C-19 methyl resonances of 5a-androstane occur at s = 0.69 p.p.m. and 6~0.79 p.p.m. in deuteriochloroform solution (I) and at dzO.71 p.p.m. and 6=0.79 p.p.m. in benzene solution .\* It therefore appears likely that in the absence of polar functional groups, no preferred geometrical relat