13C NMR spectra of benzofuroxan and related compounds

Wiley - Tập 8 Số 3 - Trang 158-160 - 1976
F. A. L. Anet1, Issa Yavari1
1Department of Chemistry, University of California at Los Angeles, Los Angeles, California 90024, U.S.A.

Tóm tắt

AbstractThe 13C n.m.r. spectrum of benzofuroxan at −15°C is assigned on the basis of selective decoupling experiments and by comparison with the 13C chemical shifts of model compounds. The 13C spectra were also measured in trifluoroacetic acid as a solvent. From the temperature dependence of the 13C spectrum of benzofuroxan in CDCl3, a barrier of 14·0 ± 0·2 kcal mol−1 is obtained for the degenerate tautomerism in this compound.

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Tài liệu tham khảo

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Wiley

Tập 8 Số 3

158-160

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