The coordination of a water molecule, bridging two distal phenolate anions of the tetrasulphonated calix[4]arene 1,3-dicarboxylic acid, has a remarkable influence on the acid base and inclusion properties of the ditopic receptor.
Synthesis of an exo-ditopic receptor based on calix[4]arene and catechol
β Scribed by Gilles Mislin; Ernest Graf; Mir Wais Hosseini
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 280 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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Ortho-tert-butylcalixarenes 3, 4 and 5 with exo-hydroxy groups were synthesised by tin tetrachloride-promoted condensation of 2,2"-dihydroxy-3,3"-di-tert-butyldiphenylmethane 6 with formaldehyde. While tH NMR analysis of compounds 3, 4 and 5 revealed a considerable annular flexibility in CDCI3 solut
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