✦ LIBER ✦

First synthesis of adamantylated thiacalix[4]arenes

✍ Scribed by Elvira Shokova; Victor Tafeenko; Vladimir Kovalev

Publisher: Elsevier Science
Year: 2002
Tongue: French
Weight: 128 KB
Volume: 43
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(02)00977-2

No coin nor oath required. For personal study only.

✦ Synopsis

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 rim was obtained from p-H-thiacalix [4]arene and 3-carboxy-1-adamantanol. The X-ray structural analysis revealed that p-(1-adamantyl)thiacalix [4]arene adopts a cone conformation leading to an inclusion complex with chloroform under the conditions of crystallization.

📜 SIMILAR VOLUMES

First Synthesis of Adamantylated Thiacal

First Synthesis of Adamantylated Thiacalix[4]arenes.

✍ Elvira Shokova; Victor Tafeenko; Vladimir Kovalev 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 23 KB

Alkylation of thiacalix[4]arenes

✍ Pavel Lhoták; Michal Himl; Ivan Stibor; Hana Petřı́čková 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 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

Synthesis of a Deep-Cavity Thiacalix[4]arene.

✍ Pavel Lhotak; Tomas Smejkal; Ivan Stibor; Jaroslav Havlicek; Marcela Tkadlecova; 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 68 KB

Nitration of thiacalix[4]arene derivativ

Nitration of thiacalix[4]arene derivatives

✍ Pavel Lhoták; Jiri Svoboda Jr.; Ivan Stibor; Jan Sykora 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 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

Upper rim substitution of thiacalix[4]arene

✍ Pavel Lhoták; Michal Himl; Ivan Stibor; Jan Sykora; Ivana Cisarová 📂 Article 📅 2001 🏛 Elsevier Science 🌐 French ⚖ 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

Thiacalixarenes: Synthesis and structural analysis of thiacalix[4]arene and of p-tert-butylthiacalix[4]arene

✍ Huriye Akdas; Laurent Bringel; Ernest Graf; Mir Wais Hosseini; Gilles Mislin; Jé 📂 Article 📅 1998 🏛 Elsevier Science 🌐 French ⚖ 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