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First Synthesis of Adamantylated Thiacalix[4]arenes.

✍ Scribed by Elvira Shokova; Victor Tafeenko; Vladimir Kovalev


Publisher
John Wiley and Sons
Year
2010
Weight
23 KB
Volume
33
Category
Article
ISSN
0931-7597

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πŸ“œ SIMILAR VOLUMES


First synthesis of adamantylated thiacal
✍ Elvira Shokova; Victor Tafeenko; Vladimir Kovalev πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 128 KB

p-(1-Adamantyl)thiacalix[4]arene was synthesized both by condensation of p-(1-adamantyl)phenol with sulfur in the presence of NaOH and by alkylation of p-H -thiacalix[4]arene with 1-adamantanol in trifluoroacetic acid. Using the latter method, the first thiacalix[4]arene carboxylated at the upper ri

Alkylation of thiacalix[4]arenes
✍ Pavel LhotΓ‘k; Michal Himl; Ivan Stibor; Hana Petřı́čkovΓ‘ πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 312 KB

Thiacalix[4]arenes were alkylated using procedures well established in 'classical' calixarene chemistry (PrI/K 2 CO 3 /acetone or PrI/NaH/DMF) to reveal conformational preferences in the thiacalixarene series. Surprisingly, the conformer distribution of tetraalkylated products is different from that

Synthesis of a Deep-Cavity Thiacalix[4]a
✍ Pavel Lhotak; Tomas Smejkal; Ivan Stibor; Jaroslav Havlicek; Marcela Tkadlecova; πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons βš– 68 KB
Nitration of thiacalix[4]arene derivativ
✍ Pavel LhotΓ‘k; Jiri Svoboda Jr.; Ivan Stibor; Jan Sykora πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 205 KB

A direct nitration of the upper rim of thiacalix [4]arenes is not possible due to the undesirable oxidation of the sulphur atoms during the nitration step leading to very complicated reaction mixtures. On the other hand, thiacalix[4]arene derivatives can be at first transformed intentionally to the

Upper rim substitution of thiacalix[4]ar
✍ Pavel LhotΓ‘k; Michal Himl; Ivan Stibor; Jan Sykora; Ivana CisarovΓ‘ πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 French βš– 258 KB

Upper rim bromination of thiacalix [4]arene has been achieved for the first time using a distally disubstituted thiacalix[4]arene as a starting material. Depending on the bromine:thiacalix[4]arene ratios, the corresponding dibromo-and tetrabromo derivatives were obtained which opens the door for sub

Thiacalixarenes: Synthesis and structura
✍ Huriye Akdas; Laurent Bringel; Ernest Graf; Mir Wais Hosseini; Gilles Mislin; JΓ© πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 French βš– 379 KB

The synthesis of tetrathiacalix [4]arene was achieved by the detertiobutylation of p-tert-butyltetrathiacalix[4]arene. X-ray diffraction studies revealed that in the solid state whereas p-tert-butyltetrathiacalix[4]arene forms inclusion complexes with solvent molecules, tetrathiacalix[4]arene under