Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Jan W. Zwikker"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 109:561-565
Two poly(iminomethylenes) with cholesterol-containing pendant groups were synthesized. Using an aliphatic spacer, a liquid-crystalline polymer was obtained, with equal amounts of right-and left-handed helices. With phenylene as bridging group, only o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de3971d5cc6f9f6b4aa1eba89e6a1bd8
https://doi.org/10.1002/recl.19901091105
https://doi.org/10.1002/recl.19901091105
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 108:215-218
To diphenylglycoluril (2), four aliphatic chains were attached, each with a vanillyl alcohol group at the end. In an acid-catalyzed reaction, three of the vanillyl alcohol groups cyclize to form a cyclotriveratrylene unit. The resulting compound (3)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a56c4a91f34f9b4a754642f15784a28d
https://doi.org/10.1002/recl.19891080603
https://doi.org/10.1002/recl.19891080603
Autor:
Paul C. M. van Gerven, Cornelis A. van Walree, Wibren D. Oosterbaan, Remco W. A. Havenith, Jacob J. Piet, Mattijs Koeberg, Rolf Gleiter, Leonardus W. Jenneskens, Jan W. Zwikker
Publikováno v:
European Journal of Organic Chemistry. 2003:3117-3130
We describe the syntheses and properties of five semi-rigid donor−(σ-bridge)−acceptor (D−σ−A) compounds. These compounds, which are candidates for incorporation in materials, have aniline-type donors and (mixed) cyano- and alkoxycarbonyl-1,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::715c9f43833202e82e9d332ed215b73b
https://doi.org/10.1002/ejoc.200200693
https://doi.org/10.1002/ejoc.200200693
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas, 101, 12, pp. 460-462
ResearcherID
Recueil des Travaux Chimiques des Pays-Bas, 101, 460-462. Elsevier Science bv
ResearcherID
Recueil des Travaux Chimiques des Pays-Bas, 101, 460-462. Elsevier Science bv
The title compound was prepared from trimethylacetyl chloride and sodium formate in the presence of 18-crown-6. The mixed anhydride proved to be a very useful reagent for the N-formylation of amines. Even amines which are unstable when deprotonated c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a263e728f8eb9d68113e4ab68093c17f
https://doi.org/10.1002/recl.19821011208
https://doi.org/10.1002/recl.19821011208
Autor:
Erik D. Leussink, Wilbert J.J. Smeets, Albert W. Marsman, Anthony L. Spek, Leonardus W. Jenneskens, Jan W. Zwikker, Nora Veldman
Publikováno v:
Chemistry of Materials. 11:1484-1491
As a consequence of the high activation barrier for oxime nitrogen inversion, the dioximes 1,1‘-bicyclohexylidene-4,4‘-dione dioxime (1) and 1,1‘-bicyclohexyl-4,4‘-dione dioxime (2) as well as thei...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5cac7e9239313657c460b7be3c20d72
https://doi.org/10.1021/cm9806329
https://doi.org/10.1021/cm9806329
Publikováno v:
Liebigs Annalen. 1997:2499-2503
Flash Vacuum Thermolysis (FVT) of 2,2′-diethynylbiphenyl (6) gave, instead of pyrene (5), acephenanthrylene (10) and fluoranthene (11) as major products. The unequivocal identification of 9-ethynylphenanthrene (12) at T ⩽ 800 °C suggests that 12
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::157323362683a124dce3c5ba6e15f0a0
https://doi.org/10.1002/jlac.199719971212
https://doi.org/10.1002/jlac.199719971212
Autor:
Jan W. Zwikker, Martin Sarobe, Leonardus W. Jenneskens, Judith D. Snoeijer, Jolanda Wesseling
Publikováno v:
Liebigs Annalen. 1997:1207-1213
The thermal interconversion of the C16H10 cyclopenta-fused polycyclic aromatic hydrocarbons (CP-PAH) fluoranthene (1), acephenanthrylene (2) and aceanthrylene (3) has been studied using Flash Vacuum Thermolysis (FVT). In contrast to previously report
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4754f7055f7b15e199b000edd3d91c44
https://doi.org/10.1002/jlac.199719970624
https://doi.org/10.1002/jlac.199719970624
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 52:174-177
The crystal structure of triphenylmethane, C 19 H 16 , has been redetermined at 150 K. It confirms the previously reported room-temperature study [Riche & Pascard-Billy (1974). Acta Cryst. B30, 1874-1876], while correcting for the erroneously reporte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::773814f36fbe258fb71a75787e64f77d
https://doi.org/10.1107/s0108270195011164
https://doi.org/10.1107/s0108270195011164
Publikováno v:
Pure and Applied Chemistry. 68:219-224
FVT of I, 1 -dichloro- and/or 1 -chloroethenyl substituted PAHs gives access to the CP-PAH's pyracylene (l), cyclopenta(cd)pyrene (12) and benz(ghi)fluoranthene (13), cyclopent(hi)aceanthrylene (18) and cyclopent(hi)acephenanthrylene (19), and the no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41012895cd5c3e8142f726ead244c7d7
https://doi.org/10.1351/pac199668020219
https://doi.org/10.1351/pac199668020219
Autor:
Jan W. Zwikker, E.J.R. Sudhölter, Frans J. Hoogesteger, Jan Kroon, T.J.M. de Bruin, C.H.M. Marée, Nora Veldman, Leonardus W. Jenneskens, E. ten Grotenhuis, Anthony L. Spek
Publikováno v:
Langmuir. 12:4760-4767
The Langmuir film-forming properties of rodlike oligo(cyclohexylidene) oximes and derivatives 1(n)-8 have been studied. It is shown that subtle structural modifications of their hydrocarbon framework, such as end-functionalization by a tert-butyl gro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41b1926655b8fc2bc374275333ba0040
https://doi.org/10.1021/la9510590
https://doi.org/10.1021/la9510590