Výsledky vyhledávání - "W. H. De Wolf"

A stereospecific anionic reduction of gem-bromohalocyclopropanes by the dimsyl anion

Autor: F.M. Bickelhaupt, W. H. De Wolf, Geerlig W. Wijsman

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 113:53-59

The reaction of several 2,2,3,3-tetrasubstituted-gem-bromohalocyclopropanes with t-BuOK in DMSO unexpectedly yielded the monohalocyclopropanes in good yield. A closer investigation revealed that this reaction must be initiated by a nucleophilic attac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b666f14856ee12c439e7386b41d901e1
https://doi.org/10.1002/recl.19941130108

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The synthesis of 1,1′-dimethylbicyclopropenyl: (Short Communication)

Autor: I.J. Landheer, W. Stol, W. H. De Wolf, F.M. Bickelhaupt

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 90:405-409

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5939b169d42e92b48ecdf5e432622621
https://doi.org/10.1002/recl.19710900410

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Synthesis and conformational analysis of halo[n.3.1]propellanes

Autor: F.M. Bickelhaupt, W. H. De Wolf, L. W. Jenneskens, L. A. M. Turkenburg

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 104:184-190

A general synthesis of tetra-, tri- and dihalosubstituted propellanes is described starting from 1,2-dimethylenecycloalkanes 2 to which dichlorocarbene is added to give the expected mono-addition products 3. Flash vacuum thermolysis of 3 gave the dic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f30d6937950b31ff961d68141e1af2cd
https://doi.org/10.1002/recl.19851040607

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Preparation and Hofmann degradation of 1,1′-dimethyl-2,2′-bis(trimethylammonio)-bicyclopropyl dihydroxide

Autor: F.M. Bickelhaupt, W. H. De Wolf

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 90:150-156

1,1′-Dimethyl-2,2′-bis(trimethylammonio)bicyclopropyl dihydroxide (XIb) was synthesized from 2,3-dimethylbutadiene and methyl diazoacetate via several difunctional 1,1′-dimethylbicyclopropyl derivatives. Hofmann degradation of XIb yielded ∼7%

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5dfa2eaed0f3728fa1da12a7ad9c886
https://doi.org/10.1002/recl.19710900204

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Attempted synthesis of a [5](2,5)pyridinophan-6-one from its Dewar isomer

Autor: Friedrich Bickelhaupt, M. Krever, G. B. M. Kostermans, W. H. De Wolf

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 106:563-570

The 1,4-pentamethylene Dewar pyridone 1a was synthesized from 2,9-undecadiyne (3), aluminium trichloride and phenyl isocyanate. The exclusive formation of 1a at the expense of other possible isomers is discussed and tentatively explained by the regio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6243cf7f9b2ebdf62b20281091d26e7
https://doi.org/10.1002/recl.19871061104

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The 2-Vinylphosphirane-3-Phospholene Rearrangement: Biradicaloid and Concerted Features

Autor: M. J. Van Eis, F. J. J. De Kanter, Tom Nijbacker, F.M. Bickelhaupt, W. H. De Wolf, Koop Lammertsma

Publikováno v: Journal of the American Chemical Society, 122, 3033-3036. American Chemical Society
Van Eis, M J, Nijbacker, T, De Kanter, F J J, De Wolf, W H, Lammertsma, K & Bickelhaupt, F 2000, ' The 2-Vinylphosphirane-3-Phospholene Rearrangement: Biradicaloid and Concerted Features ', Journal of the American Chemical Society, vol. 122, pp. 3033-3036 . https://doi.org/10.1021/ja993829q

Activation parameters have been determined for the 2-vinylphosphirane-3- phospholene rearrangement in the cycloheptane annellated series 7 → 8. For the thermal reaction, the mean activation parameters (ΔH(+) = 125 ± 5 kJ mol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a73f0ca8f26b991e3ed47e3ff8925f19
https://hdl.handle.net/1871/25300

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ChemInform Abstract: Reactivity of 8,11-Dihalo(5)metacyclophanes

Autor: Friedrich Bickelhaupt, Leonardus W. Jenneskens, H. J. R. De Boer, W. H. De Wolf

Publikováno v: ChemInform. 22

The investigation of the chemical behavior of the substituted [5] metacyclophanes revealed a rather unusual reactivity pattern. Compared to normal, planar aromatic analogues, the cyclophanes showed two remarkable trends: (1) for typical aromatic reac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6af73987dce5991de924a5d7976374d6
https://doi.org/10.1002/chin.199110131

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