Zobrazeno 1 - 10
of 302
pro vyhledávání: '"Volker Böhmer"'
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 7, Pp o1658-o1658 (2009)
The title compound, C16H14N4, features an aromatic ring with two 2,2′-dicyanopropyl residues in positions 1 and 3, which are located above and below the ring plane. The two residues differ in their conformation with respect to the aromatic ring: wh
Externí odkaz:
https://doaj.org/article/302cc23f7afb4c83b5bb547345cdcbdb
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 304:313-319
Composite materials made from polyacrylonitrile binding polymer and solid extracting agents with functional groups of diphenyl-carbamoylmethylphosphine oxide bonded to a platform of calix[4]arenes and cobalt bis(dicarbollide) cluster anion were teste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6f7cfc7d4835400cd291be45358cd87
https://doi.org/10.1007/s10967-014-3543-x
https://doi.org/10.1007/s10967-014-3543-x
Publikováno v:
Journal of Organometallic Chemistry. 747:155-166
Two ionic calix[4]arenes substituted at the narrow rim with an unpaired number ( n ) of cobalt bis(dicarbollide)(1−) anions ( 1 − ) ( n = 1 and 3) and (4 − n ) CMPO groups ( 3c , 4c ) have been synthesized via a three-step procedure based on ni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8171107f0530144e4a1c4d21b9eab8b
https://doi.org/10.1016/j.jorganchem.2013.04.035
https://doi.org/10.1016/j.jorganchem.2013.04.035
Autor:
Volker Böhmer, Elvira Shokova, Michael Bolte, Françoise Arnaud-Neu, Ivan Vatsouro, Véronique Hubscher-Bruder, Vladimir Kovalev, Leyong Wang, Alina Serebryannikova
Publikováno v:
Tetrahedron. 67:8092-8101
Six p-(1-adamantyl)calix[4]arenes 7, 8 with four differently attached diphenyl-carbamoylmethylphosphine oxide (CMPO) functions at the narrow rim were synthesized. This series was extended by adamantylcalix[4]arenes with two CMPO and two ester, acid o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::472d19adc1c9c4f14932addd5b7afa9e
https://doi.org/10.1016/j.tet.2011.08.059
https://doi.org/10.1016/j.tet.2011.08.059
Publikováno v:
Journal of Chemical Crystallography. 41:332-337
The O-alkylation of thiacalix[4]arene and of two derivatives substituted in p-position by NO2 and p-N=N–C6H4–NO2 with allylbromide leads to tetraallyl ethers in the 1,3-alternate conformation (1–3) as proved by X-ray crystallography. Compound 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0bb3a38f7bd1d97721e613ed9449aaa
https://doi.org/10.1007/s10870-010-9883-7
https://doi.org/10.1007/s10870-010-9883-7
Publikováno v:
Supramolecular Chemistry. 22:717-725
The formation of hydrogen-bonded dimeric capsules from tetraurea calix[4]arenes is controlled by loops, connecting adjacent urea functions, and more or less bulky substituents. The dimerisation is only possible if loops are not overlapping and if the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78890fc5fae14ccfd6e26e5e6ab08527
https://doi.org/10.1080/10610278.2010.500730
https://doi.org/10.1080/10610278.2010.500730
Autor:
Frederic Brisach, Volker Böhmer, Alessandro Casnati, Françoise Arnaud-Neu, Jaouad Haddaoui, Crenguta Dordea, Michael Bolte
Publikováno v:
Supramolecular Chemistry. 22:347-357
Calix[4]arene derivatives fixed in the 1,3-alternate conformation and substituted at one side by four carbamoylmethylphosphine oxide (CMPO) residues were synthesised. Two CMPO groups are directly attached to the wide rim, while the second pair is bou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bffed964ac3a00cd072a4aba97aacfd
https://doi.org/10.1080/10610271003678511
https://doi.org/10.1080/10610271003678511
Publikováno v:
Chemistry - A European Journal. 16:4541-4549
Calix[4]arenes substituted by four urea residues at their wide rim form hydrogen-bonded homo- and heterodimeric capsules in apolar solvents. If urea groups are covalently connected to loops or substituted by bulky residues, the dimerization may be re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::529ede45907d3905e216fa4067a0f105
https://doi.org/10.1002/chem.201000024
https://doi.org/10.1002/chem.201000024
Publikováno v:
Macromolecular Symposia. 287:42-50
Calix[ 4] arenes, substituted by four urea groups at their wide rim, form dimeric capsules in apolar solvents, which are held together by a seam of intermolecular hydrogen bonds. The heterodimerisation of tetra-aryl and tetratosyl ureas was used to s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17bdd14eafcbd04a029c88514b89964c
https://doi.org/10.1002/masy.201050107
https://doi.org/10.1002/masy.201050107
Publikováno v:
Synthesis. 2009:4063-4067
Nitrile groups are suitable precursors for amino functions to which various other groups can be attached. Thus, the reaction of the 1,3-bis(3-bromopropyl ether) or 1,3-bis(4-bromobutyl ether) of tert-butylcalix[4]arene with methylmalononitrile has be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a0bd4842e9cfae3dbdd101b857b17e7
https://doi.org/10.1055/s-0029-1217061
https://doi.org/10.1055/s-0029-1217061