Výsledky vyhledávání - "E. A. Oostveen"

The regiochemistry of organocopper-induced substitution of 2,4-pentadiynyl methanesulfinates

Autor: E. A. Oostveen, C.J. Elsevier, John Meijer, Peter Vermeer

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 101:382-385

The reaction of alkylcopper(I) compounds, RCu, with 2,4-pentadiynyl methanesulfinates, R′CC-CCCR″R′″OS(O)Me (1), shows a regiochemistry that depends on the size of R, R′, R″ and R′″. If the group R′ is methyl or trimethylsilyl, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1153fe682bc9611c015a5754457a26ab
https://doi.org/10.1002/recl.19821011102

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Ring transformations in reactions of heterocyclic compounds with nucleophiles (IX). Conversion of N-methylpyrimidinium salts in pyridines by carbanions

Autor: E. A. Oostveen, H. C. Van Der Plas

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 93:233-236

On treatment with active methylene compounds in basic media the quaternary pyrimidinium salts, i.e. methyl l-methylpyrimidinium sulfate, 1-methyl-4-phenylpyrimidinium iodide and 1-methyl-5-phenylpyrimidinium iodide are converted into pyridine derivat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41f353d71192e64294406e44e40e8623
https://doi.org/10.1002/recl.19740930810

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Reactions of carbon nucleophiles with 4-phenyl- and 4-tert-butyl-5-halogenopyrimidines. On the occurrence of an SRN1 mechanism

Autor: H. C. Van Der Plas, E. A. Oostveen

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 98:441-444

Reaction of 5-X-4-phenylpyrimidine (X = Br, Cl) with the enolate anions of acetone and acetophenone in liquid ammonia yields 5-acetonyl- and 5-phenacyl-4-phenylpyrimidine, respectively. It is shown that these reactions proceed via an SRN1 mechanism.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e86a821fd5680a81b1c9e1315d29901
https://doi.org/10.1002/recl.19790980705

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Nasal endoscopy is recommended for diagnosing adults with chronic rhinosinusitis

Autor: E. J. Oostveen, Nina M. Kaper, Eline S. van der Valk, Werner U. de Jong, Namiko A. Goto, Geert J. M. G. van der Heijden, Wilko Grolman, Mark C. J. Aarts, Annemarie M. H. Wuister

Publikováno v: Otolaryngology-Head and Neck Surgery, 150(3), 359-364. Mosby Inc.
Wuister, A M H, Goto, N A, Oostveen, E J, de Jong, W U, van der Valk, E S, Kaper, N M, Aarts, M C J, Grolman, W & van der Heijden, G J M G 2014, ' Nasal endoscopy is recommended for diagnosing adults with chronic rhinosinusitis ', Otolaryngology-Head and Neck Surgery, vol. 150, no. 3, pp. 359-364 . https://doi.org/10.1177/0194599813514510

Objective To assess the diagnostic value of nasal endoscopic findings in adults suspected of chronic rhinosinusitis.Data Sources PubMed, EMBASE, and the Cochrane Library.Review Methods A comprehensive search was performed up to March 5, 2013. Article

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeaed849041aba86dfb1306aa5904bce
https://pubmed.ncbi.nlm.nih.gov/24567340

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Ring transformations in reactions of heterocyclic compounds with nucleophiles (XIII) Degenerate ring transformations of N-methylpyrimidinium salts into 2-substituted pyrimidines

Autor: E. A. Oostveen, H. C. Van Der Plas, H. Jongejan

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 95:209-211

On treatment of the quaternary pyrimidinium salts i.e. 1-methyl-4-phenylpyrimidinium iodide and 1-methyl-5-phenylpyrimidinium iodide with cyanamide, O-methylisouronium chloride or bis[S-methylisothiouronium] sulfate in basic media, 2-amino-4-phenylpy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc6646bc3e1e9278c2ee83e33a141f22
https://doi.org/10.1002/recl.19760950905

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Ring transformations in reactions of heterocyclic compounds with nucleophiles (XII): A 15N and 14C study of the conversion of pyrimidine into 5-ethyl-2-methylpyridine

Autor: H. C. Van Der Plas, E. A. Oostveen

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 95:104-105

The mechanism of the conversion of pyrimidine into 5-ethyl-2-methylpyridine has been investigated. It has been proved, using the labelled compounds [1,3-15N]pyrimidine, [4,6-14C]pyrimidine and [5-14C]pyrimidine, that this reaction proceeds via a mech

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f2a67931d45c7cb3a982b5a6fd097e9
https://doi.org/10.1002/recl.19760950505

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Elektronická kniha

Feedstocks for the Future

Autor: Joseph J. Bozell, Martin K. Patel, Jürgen O. Metzger, Ursula Biermann, Detlef Wilke, Yuri Gleba, Leo E. Manzer, Pierre Gallezot, Michèle Besson, Laurent Djakovitch, Alain Perrard, Catherine Pinel, Alexander Sorokin, Dejan D. Andjelkovic, Fengkui Li, Richard C. Larock, Graham J. Hutchings, Silvio Carrettin, Paul McMorn, Patrick Jenkins, Gary A. Attard, Peter Johnston, Ken Griffin, Christopher J. Kiely, J. van Haveren, E. A. Oostveen, F. Miccichè, J. G. J. Weijnen, Scott D. Allen, Christopher M. Byrne, Geoffrey W. Coates, Corey R. Anthony, Lisa McElwee-White, Kevin P. Gable, Brian Ross, Colin P. Horwitz, Terrence J. Collins, Jonathan Spatz, Hayden J. Smith, L. James Wright, Trevor R. Stuthridge, Kathryn G. Wingate, Kim McGrouther, Duncan J. Macquarrie, Jeff J. E. Hardy, Sandrine Hubert, Alexa J. Deveaux, Marco Bandini, Rafael Luque Alvarez, Marie Chabrel, Peter Richard, Ritva Verho, John Londesborough, Merja Penttilä, Thomas M. Keenan, Stuart W. Tanenbaum, James P. Nakas, Arthur J. Stipanovic, Thomas E. Amidon, Gary M. Scott, Vincent Barber, Misty

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1-Methylpyridinio and 2,4-dinitrophenyl groups as electron acceptors in poly(iminomethylenes)

Autor: E. A. Oostveen, W. Drenth

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 102:35-41

The synthesis and charge-transfer (CT) spectra are described for a series of homopolymers and copolymers of poly(iminomethylenes), , which contain pyridinium groups as acceptor and iodide ions as donor. The group R includes 3-[1-CH3-N⊕C5H4]CH2-(1c)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d7b047ea4db58cfa2506498fcef7b0ff
https://doi.org/10.1002/recl.19831020105

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On theN-ethylation of 4-alkoxy- and 4,6-dialkoxypyrimidines with triethyloxonium tetrafluoroborate

Autor: E. A. Oostveen, H. C. Van Der Plas

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 96:64-68

Reaction of 4-alkoxy-(1–4) or 4,6-dialkoxypyrimidines (5–9) with 1 equivalent of triethyloxonium tetrafluoroborate yields 4-alkoxy-N-ethyl (13–15) or 4,6-dialkoxy-N-ethylpyrimidinium salts (10–12), respectively. With two or more equivalents o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::735dd7b9a5e2b81ad75d4c6ee5b72d6f
https://doi.org/10.1002/recl.19770960303

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Palladium(0)-promoted cross-coupling of allenylmetal compounds with aryl and vinyl iodides. A novel route to aryl- and vinyl-substituted allenes

Autor: Ruitenberg H. Kleijn, E. A. Oostveen, John Meijer, Peter Vermeer

Publikováno v: Journal of Organometallic Chemistry. 224:399-405

The reaction of allenylmetal compounds, RR{′}CCCHM (I), with aryl and vinyl iodides, R I, have been studied. With Pd(PPh3)4 as catalyst a highly regioselective formation of allenes, RR{′}CC CHR″ (II), has been observed for MgCl,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5fce397486c27182d42af7815e7d61a3
https://doi.org/10.1016/s0022-328x(00)93180-2

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