Výsledky vyhledávání - "Dwayne R. Senn"

Poly(p-phenylene sulfide) Synthesis: A Step-Growth Polymerization with Unequal Step Reactivity

Autor: Harvey Dean Hensley, Dwayne R. Senn, Carlton E. Ash, Darryl R. Fahey

Publikováno v: Macromolecules. 30:387-393

The anomalous responses of Mw to conversion and to comonomer stoichiometry, i.e., deviations from expected classic A−A + B−B step-growth polycondensation behavior, observed in poly(p-phenylene sulfide) synthesis from p-dichlorobenzene and sodium

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a589d51586f459964929d0c7f0183b3
https://doi.org/10.1021/ma961015d

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Synthesis and characterization of ran-copoly (p-phenylene sulfide sulfone/ketone)s

Autor: Dwayne R. Senn

Publikováno v: Journal of Polymer Science Part A: Polymer Chemistry. 32:1175-1183

Random copoly(p-phenylene sulfide sulfone/ketone)s (PPSS/K) [PhSO 2 PhS] m [PhCOPhS] n are prepared in high yield by the polycondensation of sodium hydrosulfide (NaSH) with bis (4-chlorophenyl) sulfone (BCPS) and 4,4'-dichlorobenzophenone (DCBP). The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ba6818a0339bfe7e15bdcbbec7713629
https://doi.org/10.1002/pola.1994.080320620

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Synthesis, structure, and reactions of chiral rhenium vinylidene and acetylide complexes of the formula [(.eta.5-C5H5)Re(NO)(PPh3)(X)]n+. Vinylidene complexes that are formed by stereospecific C.beta. electrophilic attack, exist as two Re=C=C geometric isomers, and undergo stereospecific C.alpha. nucleophilic attack

Autor: Dwayne R. Senn, Charles E. Strouse, Andrew D. Wong, Marianne Marsi, John A. Gladysz, Alan T. Patton

Publikováno v: Journal of the American Chemical Society. 110(18)

In this paper, the authors report (a) high-yield syntheses of chiral rhenium vinylidene complexes ((/eta//sup 5/-C/sub 5/H/sub 5/)Re(NO)(PPh/sub 3/)(/emdash/C/emdash/CRR/prime/))/sup +/X/sup /minus// and acetylide complexes (/eta//sup 5/-C/sub 5/H/su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3826115a151c8d71cc1313886f141a6a
https://pubmed.ncbi.nlm.nih.gov/22148786

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ChemInform Abstract: Synthesis of 3,4-Disubstituted Indoles via a Sequential Olefin- Insertion/Ene Route

Autor: Dwayne R. Senn, Stephen L. Buchwald, Jeffrey H. Tidwell

Publikováno v: ChemInform. 22

Of particular significances is the complete regioselectivity of the method and its utilization of readily available starting materials

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::253e8d852618d35482dadd0ecab8a99e
https://doi.org/10.1002/chin.199136179

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Reactions of the terminal rhenium acetylide complex Re(η5-C5H5)(NO)(PPh3)(CCH) and butyllithium; generation, alkylation and stannylation of lithiocarbide complexes of the formula Re(η5-C5H4)(NO)(PPh3)(CCLi)(X = H, Li)

Autor: John A. Gladysz, Francine Agbossou, James A. Ramsden, Dwayne R. Senn

Publikováno v: J. Chem. Soc., Chem. Commun.. :1360-1362

The title reaction gives, depending upon stoichiometry and conditions, Re(η5-C5H5)(NO)(PPh3)(CCLi) and Re(η5-C5H4Li)(NO)(PPh3)(CCLi); the first transition metal–alkali metal carbide complexes which are in turn derivatized by carbon and metal elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e520393722322ca7f8e604378e435ad
https://doi.org/10.1039/c39910001360

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Synthesis of 3,4-disubstituted indoles via a sequential olefin-insertion/ene route

Autor: Stephen L. Buchwald, Dwayne R. Senn, Jeffrey H. Tidwell

Publikováno v: Journal of the American Chemical Society. 113:4685-4686

Of particular significances is the complete regioselectivity of the method and its utilization of readily available starting materials

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5749ebc70c131a1e59bf0b769e245965
https://doi.org/10.1021/ja00012a050

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5618407 Catalytic cracking process utilizing a catalyst comprising aluminum borate and zirconium borate

Autor: Dwayne R. Senn, Marvin M. Johnson, Lyle R. Kallenbach

Publikováno v: Journal of Molecular Catalysis A: Chemical. 125:162

A process for catalytically cracking a hydrocarbon-containing oil employs a cracking catalyst comprising aluminum borate and zirconium borate.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99b75960bcde588c0bc98141ab015ddf
https://doi.org/10.1016/s1381-1169(98)80047-2

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ChemInform Abstract: A New Method for the Activation of Metal-Bound Methyl Groups. Oxidative Disproportionation to Coordinated Ethylene and Methane

Autor: Dwayne R. Senn, John A. Gladysz, V. D. Parker, Gerardo S. Bodner, M. Tilset

Publikováno v: ChemInform. 19

With Fe complex (III) as electron acceptor the methyl Re complex (I) combined with (II) at -78 °C reacts on warming to give (IV) and (V) and methane (VI); (IV) disproportionates to ethylene complex (VII) from which ethylene (X) may be liberated by n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34ccd6cc0245b0339e2fb33bdfc30cfb
https://doi.org/10.1002/chin.198812272

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