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Carbon‐13 NMR Studies of 3‐Aryl‐4‐(5‐aryl‐Δ 2 ‐1,2,4‐oxadiazolin‐3‐yl)sydnones and 3‐Aryl‐4‐(5‐aryl‐1,2,4‐oxadiazol‐3‐yl)sydnones
Author(s) -
Ma Sun,
Huang ChinLin,
Yeh MouYung
Publication year - 1991
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199100043
Subject(s) - chemistry , aryl , proton nmr , oxadiazole , carbon 13 nmr , stereochemistry , proton , medicinal chemistry , organic chemistry , alkyl , physics , quantum mechanics
The 13 C NMR spectra of twelve 3‐aryl‐4‐(5‐aryl‐Δ 2 ‐l,2,4‐oxadiazolin‐3‐yl)sydnones and twelve 3‐aryl‐4‐(5‐aryl‐l,2,4‐oxadiazol‐3‐yl)sydnones have been measured and assigned by means of proton‐noise decoupling and DEPT‐experiments. The coupling constants were determined by means of gated decoupling, and NOE effects were observed by comparison of proton‐decoupled and inverse‐gated decoupled spectra. Differences shown by the oxadiazoline and the oxadiazole rings and the substitution effects are discussed.