Preparation, characterization and reactions of perfluoroorgano-selenocarbonyls and their dimers
β Scribed by A. Haas; M. Spehr
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 42 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0022-1139
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Reactions of 3-substituted 4,6-dimethoxybenzofurans with formaldehyde and aryl aldeydes in the presence of acetic acid and phosphoryl chloride respectively give new macrocyclic calix[3]benzofurans, predominantly with an unsymmetrical linkage pattern. Incorporation of a t-butyl substituent at the 3-p