Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"SIR3"”.
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Bond Formation Reactions to Phosphorus Using an Electrophilic Phosphinidene Complex
… the silyl phosphine complexes [CpFe(CO)2{P(H)(SiR3)NiPr2}]+ (SiR3 = SiPhH2, SiPh2H, Si(C2H5)3), in which the phosphinidene has inserted into the Si-H bond. A computational study shows that the insertion is concerted. The same phosphinidene complex reacts with HPPh2 to form the …
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Metal-ligand cooperativity in first row transition metals: hydrosilylation catalysis and mechanistic insights
… (1) alkene binding is observed in the form Co(SiR3)(PNpy)(styrene), (2) silanes protonolyze catalyst precursors to give s-silyl complexes, Co(SiR3)(PNpy)(PPh3), and (3) ethylene inserts into the Co-Si bond to give Co(CH2CH2SiR3)(PNpy)(PPh3). Chapter 6 presents the synthesis, reactivity and …
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Localizzazione della topoisomerasi IB sui telomeri di S. cerevisiae e ruolo della sua attività catalitica sulle modificazioni istoniche
… H3. Top1 wt incrementa anche il reclutamento di Sir3 nelle regioni di confine della cromatina silenziata dello stesso telomero. Studi di immunoprecipitazione indicano che l’enzima interagisce direttamente con la struttura della cromatina telomerica poichè entrambe le proteine, quella wt e quella …
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Pentelide und Penteldiide der Erdalkalimetalle und des Yttriums
… dieser Phosphanide des Typs Cp´´2YP(H)SiR3(thf) und Cp´´2Y[P(H)SiR3]2M(L) angefertigt werden, die sich durch Metatheseraktionen von Kalium-trialkylsilylphosphaniden und Cp´´2YCl2Li(thf)2 darstellen lassen. Die entstandenen Phosphanide zeichnen sich durch äußerste Empfindlichkeit aus. …
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Genetic and mechanistic analysis of heterochromatin spreading in the yeast S.cerevisiae
RNA Polymerase III transcribed tRNA genes are implicated in a wide variety of chromosome organizational functions that includes the ability to act as a boundary to heterochromatic silencing. A tRNA gene has been shown to be a major component of the barrier that prevents spreading of silencing from …
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Auf dem Wege zu einem Disilin RSi≡SiR Supersilylierte Silane, Silanide, Silylene, Disilene
… mit Halogensilanen R3SiHal zu Disilanen R*2XSi–SiR3 um, bauen P4 unter Bildung von K2P4(SiMeR*2)2 nucleophil ab, reagieren in einigen Fällen mit Verbindungen des Typs RnEHal unter Na/Hal-Austausch und bilden für X = H mit M’Hal2 (M’ = Mg, Zn, Cd, Hg) Silanide (R*2HSi)2M’, die – laut …