Zobrazeno 1 - 10 of 21 pro vyhledávání: '"G.B.W.L. Ligthart"'
1
The mechanism of ureido-pyrimidinone:2,7-diamido-naphthyridine complexation and the presence of kinetically controlled pathways in multicomponent hydrogen-bonded systems
Autor: Tom F. A. de Greef, Anthony L. Spek, G.B.W.L. Ligthart, E. W. Meijer, Martin Lutz, Rint P. Sijbesma
Publikováno v: Journal of the American Chemical Society, 130(16), 5479-5486. American Chemical Society
The kinetics of association of ureido-pyrimidinone (U) dimers, present either in the 4[1H]-keto form or in the pyrimidin-4-ol form, with 2,7-diamido-1,8-naphthyridine (N) into a complementary heterodimer have been investigated. The formation of heter
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aef58c10f442eeff7fc514b8611729e
https://doi.org/10.1021/ja709971y
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2
Ureidobenzotriazine multiple H-bonding arrays: The importance of geometrical details on the stability of H-bonds
Autor: Rint P. Sijbesma, Han Zuilhof, Dawei Guo, G.B.W.L. Ligthart, Huub Kooijman, Anthony L. Spek
Publikováno v: Journal of Organic Chemistry 73 (2008) 1
Journal of Organic Chemistry, 73(1), 111-117
Journal of Organic Chemistry, 73(1), 111-117. American Chemical Society
A 3-ureidobenzo-1,2,4-triazine 1-N-oxide (1) was synthesized successfully. The derivative displays an acceptor-donor-acceptor-acceptor (ADAA) hydrogen-bonding motif in CDCl(3) and DMSO-d(6) solution as well as in the solid state. Although moderately
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e7089238a50458ea1470f0ec18b20c4
https://doi.org/10.1021/jo7019338
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3
Olefin metathesis and quadruple hydrogen bonding: A powerful combination in multistep supramolecular synthesis
Autor: Rint P. Sijbesma, Oren A. Scherman, G.B.W.L. Ligthart, E. W. Meijer, Haruki Ohkawa
Publikováno v: Proceedings of the National Academy of Sciences of the United States of America (PNAS), 103(32), 11850-11855. National Academy of Sciences
We show that combining concepts generally used in covalent organic synthesis such as retrosynthetic analysis and the use of protecting groups, and applying them to the self-assembly of polymeric building blocks in multiple steps, results in a powerfu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::426809388743ee20e612def25a9e8c3a
https://doi.org/10.1073/pnas.0602413103
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4
RuCl2[S-BINAP]-catalyzed synthesis of aldehydes and ketones by dehydrogenation of alcohols
Autor: Jef A. J. M. Vekemans, G.B.W.L. Ligthart, J Jan Meuldijk, R. H. Meijer, L.A. Hulshof
Publikováno v: Journal of Molecular Catalysis A: Chemical, 218(1), 29-40. Elsevier
RuCl 2 [ S -BINAP] catalyzed dehydrogenation of alcohols into aldehydes or ketones has been investigated. Among many H-acceptors screened, diphenylacetylene (tolane) was the most suitable judged from its smooth reduction. Electron rich and deficient
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::caac1df174b2edc7464f2a1d4e94e426
https://doi.org/10.1016/j.molcata.2004.04.003
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5
Highly sustainable catalytic dehydrogenation of alcohols with evolution of hydrogen gas
Autor: M. P. J. Donners, L.A. Hulshof, G.B.W.L. Ligthart, J Jan Meuldijk, Jef A. J. M. Vekemans, R. H. Meijer
Publikováno v: Tetrahedron Letters, 44(7), 1507-1509. Elsevier
The catalytic dehydrogenation of alcohols into aldehydes and ketones in the absence of H-acceptors was studied with several transition metal catalysts in order to develop a large-scale procedure. Applying Ru(OCOCF3)2(CO)(PPh3)2, the so called Robinso
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16bd14681dd46855eb8b07a7bedb0dd3
https://doi.org/10.1016/s0040-4039(02)02842-3
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7
Pd-Catalyzed Amidation of 2-Chloro- and 2,7-Dichloro-1,8-naphthyridines
Autor: Haruki Ohkawa, E. W. Meijer, G.B.W.L. Ligthart, Rint P. Sijbesma
Publikováno v: Journal of Organic Chemistry, 71(1), 375-378. American Chemical Society
[reactions: see text] The catalytic amidation between 2-chloro- and 2,7-dichloro-1,8-naphthyridines and primary amides bearing functional groups is reported. When Pd(OAc)2, xantphos, and K2CO3 are used, it is possible to obtain symmetric as well as n
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9da432ee7611bfe2bffa45213208e71
https://research.tue.nl/nl/publications/ab1d12af-9d77-4d8d-9f53-8adc9c71bf02
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8
Triruthenium dodecacarbonyl/triphenylphosphine catalyzed dehydrogenation of primary and secondary alcohols
Autor: Huub Kooijman, G.B.W.L. Ligthart, L.A. Hulshof, J Jan Meuldijk, Allison M. Mills, R. H. Meijer, Anthony L. Spek, Jef A. J. M. Vekemans
Publikováno v: Tetrahedron, 60(5), 1065-1072. Elsevier
Dehydrogenation of alcs. into aldehydes and ketones by Ru3(CO)12/PPh3 based homogeneous catalysis has been investigated as an alternative for the classical Oppenauer oxidn. Several catalytic systems have been screened in the Oppenauer-like oxidn. of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bebaf74c0400dc01e443e287c1d1c8c
https://research.tue.nl/nl/publications/382df241-0cfa-4d4b-9fc3-cf3162dc8712
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9
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10
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