@article{ZilchTacke1986, author = {Zilch, H. and Tacke, Reinhold}, title = {Fluorid-induzierte Fragmentierung von Acetyldimethylphenylsilan}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63802}, year = {1986}, abstract = {Acetyldimethylphenylsilane (2) reacts with TBAF · 3H\(_2\)O in THF and with KF in DMSO/H\(_2\)0, respectively, to give [(CH\(_3\) )\(_2\)SiO]\(_x\) and 1-Phenylethanol (3) which can be isolated with a nearly quantitative yield. The way 2 reacts with F\(^-\) contrasts with that of some aroyl- and heteroaroyltrimethylsilanes, described in the literature. A reaction mechanism is discussed which involves among others a 1 ,2-phenyl shift and a Brook rearrangement.}, subject = {Anorganische Chemie}, language = {de} } @article{WrobelTackeWannagatetal.1982, author = {Wrobel, D. and Tacke, Reinhold and Wannagat, U. and Harder, U.}, title = {Sila-Analoga terti{\"a}rer Carbinole mit Duftwirkung}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63705}, year = {1982}, abstract = {Es wurden Silanale RR'R"SiOH 7 dargestellt, die Carbinolen RR'R"COH 1 (R = CH\(_3\) , R' = CH\(_3\) , CH = CH\(_2\) , C\(_2\)H\(_5\) , R" = CH\(_2\)C\(_6\)H\(_5\) , CH\(_2\)CH\(_2\)C\(_6\)H\(_5\)) mit starker Duftwirkung im Bereich blumiger Noten (Maigl{\"o}ckchen-Hyazinthe-Rose) analog waren. Ihr Syntheseweg verl{\"a}uft {\"u}ber die Reaktionsschritte (3) mit teilweise bisher unbekannten Zwischenstufen 6. Die Sila-Riechstoffe 7 sind in Intensit{\"a}t und Duftbereich den Carbinolen 1 {\"a}hnlich, doch ist allgemein eine Verschiebung der Duftnote von Maigl{\"o}ckchen zu Hyazinthe zu beobachten.}, subject = {Anorganische Chemie}, language = {de} } @article{WieseTackeWannagat1981, author = {Wiese, D. and Tacke, Reinhold and Wannagat, U.}, title = {9,9-Dimethyl-10-(3-dimethylaminopropyl)-9-silaacridan, ein Sila-Analogon des Dimetacrins, und strukturverwandte Verbindungen}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63691}, year = {1981}, abstract = {Das Sila-Dimetacrin (3a), ein Sila-Analogon des Psychopharmakons Dimetacrin (2), und sein N,N-Diethylderivat 3 b sowie sein 3-Chlorderivat 3 c wurden, von den o-Halogenanilinen 4 a- c ausgehend, {\"u}ber die teilweise unbekannten Stufen 5 a- c bis 10a- d synthetisiert, in ihren Eigenschaften beschrieben und in ihrer Struktur {\"u}ber Elementaranalysen, \(^1\)H-NMR- und Massenspektren sichergestellt. Die Synthese des Zwischenproduktes Bis(2-bromphenyl)amin (9a) konnte optimiert werden.}, subject = {Anorganische Chemie}, language = {de} } @article{TackeZimonyiHegeduesWannagat1979, author = {Tacke, Reinhold and Zimonyi-Heged{\"u}s, E. and Wannagat, U.}, title = {Si-C-Spaltung in 2-Thienylsilanen durch sekund{\"a}re Amine}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63608}, year = {1979}, abstract = {Die Umsetzung von Diphenyl-vinylsilan mit zyklischen sekund{\"a}ren Aminen (z.B. Morpholin) in Gegenwart der entsprechenden Lithium-amide f{\"u}hrt zu einer Substitution des an Silicium gebundenen H-Atoms durch eine Aminogruppe und zu einer Addition des Amins an die Vinylgruppe. 2-Thienylphenyl- vinylsilan reagiert jedoch zus{\"a}tzlich unter Spaltung der Si-e-Bindung und Aminosubstitution der 2-Thienylgruppe.}, subject = {Anorganische Chemie}, language = {de} } @article{TackeZimonyiHegeduesStreckeretal.1980, author = {Tacke, Reinhold and Zimonyi-Heged{\"u}s, E. and Strecker, M. and Heeg, E. and Berndt, B. and Langner, R.}, title = {Sila-Analogon des Tiemoniumiodids}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63669}, year = {1980}, abstract = {Sila-Tiemoniumiodid (16b), ein Sila-Analogon des Anticholinergicums Tiemoniumiodid (16a), und das Sila-Analogon 14b der entsprechenden Tiemonium-Base 14a wurden erstmalig synthetisiert.14b und 16b sowie die Vorstufen 10-13 und 15 wurden in ihren physikalischen und chemischen Eigenschaften charakterisiert und in ihrer Struktur durch Elementaranalysen sowie \(^1\)H-NMR- und Massenspektren sichergestellt. Die spasmolytischen Eigenschaften der Paare 14a/14b und 16a/16b wurden am isolierten Meerschweinchendarm vergleichend untersucht.}, subject = {Anorganische Chemie}, language = {de} } @article{TackeWiesenbergerLopezMrasetal.1992, author = {Tacke, Reinhold and Wiesenberger, Frank and Lopez-Mras, Angel and Sperlich, J{\"o}rg and Mattern, G{\"u}nter}, title = {Neuartige zwitterionische λ5-Spirosilicate: Synthese und Kristallstruktur von Bis[1,2-benzoldiolato(2-)][2-(dimethylammonio)phenyl]silicat sowie Synthese von Bis[2,3-naphthalindiolato(2-)][2-(dimethylammonio)phenyl]silicat-Hemiacetonitril-Solvat}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-86916}, year = {1992}, abstract = {No abstract available.}, subject = {Silicate}, language = {de} } @article{TackeWiesenberger1991, author = {Tacke, Reinhold and Wiesenberger, Frank}, title = {(Acetoxymethyl)methylphenylgerman: Synthese, thermisches Verhalten und olfaktorische Eigenschaften}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-86927}, year = {1991}, abstract = {No abstract available.}, subject = {Chemische Synthese}, language = {de} } @article{TackeWiesenbergerBeckeretal.1992, author = {Tacke, Reinhold and Wiesenberger, F. and Becker, B. and Rohr-Aehle, R. and Schneider, P. B. and Ulbrich, U. and Sarge, S. M. and Cammenga, H. K. and Koslowski, T. and Niessen, W. von}, title = {Ester von (Hydroxymethyl)diorganylsilanen: Synthese und thermisch induzierte Umlagerung}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-64188}, year = {1992}, abstract = {Twenty silanes of the type R\(^1\)R\(^2\)Si(H)CH\(_2\)OR\(^3\) (A) were syn- and entropy of activation) of these reactions were studied by thesized {R\(^1\), R\(^2\) = Me, Ph, 1-naphthyl, PhCH\(_2\), Me\(_3\)SiCH\(_2\); OR\(^3\) means of d{\"u}ferential scanning calorimetry (DSC). In addition, = OC(O)Me, OC(O)Ph, OC(O)CF\(_3\) , OS(0)\(_2\)CF\(_3\), OP(O)Ph\(_2\), the kinetics of all reactions were investigated by 1H-NMR OC(O)Cl, and studied for their thermal behaviour. The silanes spectroscopy. The transition state of the rearrangement was A undergo a thermally induced rearrangement to give the investigated by an ab initio study based on the model comcorresponding silanes R\(^1\)R\(^2\)Si(OR\(^3\))Me (B). For compounds with pound H\(_3\)SiCH\(_2\)OC(O)H (-> MeH\(_2\)SiOC(O)H]. The theoretical OR3 = OC(O)Cl, an additional decarboxylation takes place to data and the experimentally obtained energetic and kinetic yield the chlorosilanes R1R2Si(Cl)Me. Except for the deriva- data are discussed in terms of mechanistic aspects of the retives with OR\(^3\) = OC(O)Cl, the energetic (reaction enthalpy) arrangement reaction A -> B. and kinetic data (reaction order, frequency factor, enthalpy ...}, subject = {Anorganische Chemie}, language = {de} } @article{TackeWannagat1975, author = {Tacke, Reinhold and Wannagat, U.}, title = {Sila-Analoga des Mephenhydramins}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63525}, year = {1975}, abstract = {Sila-Analogues A 2, B 2 and C 2 of the drug mephenhydramine from the class of benzhydryl ethers were synthesized for the first time by the steps shown in scheme 1, and they and their precursors I-V characterized by their physical {table 1) and chemical properties, and their structures confirmed by NMR, n1ass and infrared spectroscopy (tables 3-5). Their physiological effects were investigated a.nd compared -with those of the parent carbon compounds (section 5).}, subject = {Anorganische Chemie}, language = {de} } @article{TackeWannagat1976, author = {Tacke, Reinhold and Wannagat, U.}, title = {Sila-Analoga des Chlorphenoxamins und des Clofenetamins}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63531}, year = {1976}, abstract = {Sila-ana.logues A 2 and B 2 of two drugs from the benzhydryl ether class, chlorphenoxamine and clofenetamine, were synthesized for the first time by the steps shown in scheme 1. They and their precursors I-VI v;rere characterized by their physical (Table 1) and chemical properties and their structures confirmed by n.m.r., mass and infrared spectroscopy (Tab]es 2-5). Their physiological effects were invest.igated and compared with those of the carbon analogues (Chapter 5).}, subject = {Anorganische Chemie}, language = {de} }