H NMR Spectra of the 2-'Iki!luoroacetyl Derivatives of Benzo[b]fuwn and Benzo[b]thiopltene The 'H NMR spectra of the 2-trifluoroacetyl derivatives of benzo[blfuran and benzo[blthiophene were recorded at 200MHz in two solvents, chloroform and acetone. A long-range coupling constant, 5J(HF), between
Potential antifertility agents. 1. Substituted diaryl derivatives of benzo[b]thiophenes, benzo[b]furans, 1H-2-benzothiapyrans, and 2H-1-benzothiapyrans
β Scribed by Crenshaw, R. R.; Jeffries, A. T.; Luke, G. M.; Cheney, L. C.; Bialy, G.
- Book ID
- 120412194
- Publisher
- American Chemical Society
- Year
- 1971
- Tongue
- English
- Weight
- 772 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0022-2623
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## Abstract magnified image Treatment of methyl propiolate and 2β(thiophenβ2βyl)benzaldehyde, 2β(thiophenβ3βyl)benzaldehyde or 2β(furanβ3βyl)benzaldehyde with tetrabutylammonium iodide/zirconium (IV) chloride or treatment of methyl acrylate and the same aldehydes with 1,4βdiazabicyclo[2,2,2]octane