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  • 1
    ISSN: 1434-4475
    Keywords: Sila-Perfumes ; Thiocarbinols ; Silanethiols ; Silathiolane ; Olfactoric theories
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The thiocarbinolsRC(CH3)2SH withR=C6H5CH2 and C6H5CH2CH2 were prepared via reactions 2–5 and compared in their odors (very unpleasant) with the fragrances of the analogous carbinolsRC(CH3)2OH and silanolsRSi(CH3)2OH. Silanethiols, prepared by reactions 6–8, smell less unpleasant than thiocarbinols but decompose easily in the presence of catalytic amounts of ammonium salts (eq. 9). Very pure hexenyl-methyl-vinylsilanethiol (“silathiolinalool”) decomposes contrarily under cyclization to a 1-sila-2-thia-cyclopentane derivative (E 1). The differences of odors, in spite of very similar structures, are discussed in the light of the theory ofAmoore (“Size and structure of molecules rule their odor qualities”).
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 116 (1985), S. 7-18 
    ISSN: 1434-4475
    Keywords: Sila-Perfumes ; Isosteric compounds ; Theory of smell ; Phosphinimides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Zusammenfassung Derivatives of benzyldialkylphosphinimides C6H5CH2-PRR′=NH (C) with =NCH3, =NSiMe 3, =O, =S, −CS 2 ⊖ and −NH2]NCS⊖ instead of =NH groups (compare Scheme 1) were prepared and characterized. They neither show the H/D exchange of CH2 benzyl protons with CDCl3 nor the thermal formation of stilbene on heating like the parent compounds C, but they give in the case of =NCH3 and =NSiMe 3 analogously aHorner-Wittig reaction with aldehydes. CS2 reacts with C under NH/S-exchange. The quality of smell ofPhCH2-PRR′ =NCH3 (none, later fishy) is quite different from that of isostericPhCH2-SiRR′ −OCH3 (flowery-honeylike/minty) and the smell of C (metallic/chlorinated hydrocarbon-like) from that ofGrimm hydride isostersPhCH2−PRR′=O (weak; flowery-waxy). The theory ofAmoore (size and shape of molecules control their smell qualities) must be called in question.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 110 (1979), S. 1089-1097 
    ISSN: 1434-4475
    Keywords: Cyclodisilazanes ; Spiro[3.3]trisilatetrazanes)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract CyclodisilazanesC 1–8 as well as open chained aminodisilazanesE 1–2 with different substituents on each unit of the framework were synthesized according to Equ. (1)–(3) and (6) (a)–(d) repectively. In the case of Equ. (4) a spiro[3.3]trisilatetrazaneD1 was formed instead ofC9. Eleven novel compounds of the three classes of substances are described in their properties (Tab. 1) and confirmed in their constitution by elemental analysis, nmr and mass spectra (Tab. 2–3).
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 97 (1964), S. 2029-2036 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Trihalogensilyl-bis-trimethylsilyl-amine, [(CH3)3Si]2N—SiX3, mit X=H, F, Cl, Br, J, NCO wurden auf verschiedenen Wegen (Rkk. 1, 2, 4, 5, 7) dargestellt und in ihren physikalischen nd chemischen Eigenschaften charakterisiert; an Hand von IR- und NMR-Spektren werden ihre Strukturmerkmale diskutiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 94 (1961), S. 1540-1547 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Metallierung von Disilazanen zu Alkali-bis-silyl-amiden (R3Si)2NMe gelingt mit LiC6H5, NaNH2 oder KNH2 in benzolischer Suspension. Die Lithium- und Natriumverbindung des Hexamethyldisilazans sind gut kristallisierende, destillierbare und ohne Zersetzung schmelzende Substanzen, die sich in nichtpolaren Lösungsmitteln teils extrem (Li), teils mäßig gut lösen. Mit Elektronenpaardonatormolekeln, wie Äthern, Pyridin, aber anscheinend selbst mit Alkalihalogeniden, bilden sich mehr oder minder stabile Additionsverbindungen. Alkali-silyl-amide und -hydrazide reagieren in Lösung leicht mit Elementhalogeniden kovalenter Bindung zu Silyl-amino- und Silyl-hydrazino-Derivaten dieser Elemente, die über die nichtmetallierten Stickstoffverbindungen nicht zugänglich sind.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 96 (1963), S. 2138-2143 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Natrium-bis-trimethylsilyl-amid reagiert mit Benzoesäure und einigen ihrer Derivate unter H/Na- oder O/NSi(CH3)-Austausch, wobei meist das N.O-Bis-trimethylsilyl-Derivat der Benzimidsäure, C6H5C(NH)OH, entsteht. N.N-Bis-trimethylsilyl-carbonamid-Gruppen, —CO—N[Si(CH3)3]2, lagern sich bereits im Augenblicke ihrer Bildung in isomere —C[OSi(CH3)3]=N—Si(CH3)3-Einheiten um.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 96 (1963), S. 2132-2137 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Natrium-bis-trimethylsilyl-amid reagiert mit nicht enolisierbaren Carbonylverbindungen unter primärer Addition und nachfolgender Abspaltung von Natriumtrimethyl-silanolat zu N-Trimethylislyl-carbimid-Derivaten: Beschrieben werden Darstellung und Eigenschaften der intensiv gelben bis rotbraunen Verbindungen (C6H5)2, C=NSi(CH3)3, (C6H5)HC=N—Si(CH3)3.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 873-878 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Attempts to prepare 9,9-dimethyl-9-sila-10(9H)-anthracenone (4a) from dimethylphenyl-2-tolylsilane (5) or 2-bromobenzoic acid as starting compounds via 2-(dimethylphenylsilyl)benzoyl chloride (11a) by condensation with tin tetrachloride resulted in high yields of the title compound 14a. Determination of its structure was only possible by X-ray analysis, determination of the course of the reaction by variation with 2-[(4-chlorophenyl)dimethylsilyl]-benzoyl chloride (11b) and mass spectroscopical investigation of the resulting isomeric mixture of bis[(chlorobenzoyl)phenyl]tetramethyldisiloxanes 14b,b′,b′.
    Notes: Versuche, von Dimethylphenyl-2-tolylsilan (5) oder 2-Brombenzoesäure ausgehend über 2-(Dimethylphenylsilyl)benzoylchlorid (11a) mit Zinntetrachlorid als Ringschlußkatalysator zu 9,9-Dimethyl-9-sila-10(9H)-anthracenon (4a) zu gelangen, führten stets in hohen Ausbeuten zur Titelverbindung 14a, deren Konstitutionsaufklärung erst durch Röntgenstrukturanalyse gelang. Der Reaktionsweg konnte durch Variation mit 2-[(4-Chlorphenyl)dimethylsilyl]benzoylchlorid (11b) und massenspektrometrische Aufklärung des dabei entstehenden Isomerengemisches von Bis[(chlorbenzoyl)phenyl]tetramethyldisiloxanen 14b, b′, b′ sichergestellt werden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 1694-1704 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sila Perfumes, I. Sila Analogues of Tertiary Carbinols as PerfumesSilanols RR′R″SiOH 7 which are analog to carbinols 1 with strong odour in the region of flowery notes (lily of the valley-hyacinth-rose) were prepared via reaction steps (3) and partially unknown intermediates 6. Sila perfumes 7 are similar in intensity and spectrum of odour to 1 but a shift from lily of the valley towards hyacinth notes is generally observed.
    Notes: Es wurden Silanole RR′R″SiOH 7 dargestellt, die Carbinolen RR′R″COH 1 (R = CH3, R′ = CH3, CH=CH2, C2H5, R″ = CH2C6H5, CH2CH2C6H5) mit starker Duftwirkung im Bereich blumiger Noten (Maiglöckchen-Hyazinthe-Rose) analog waren. Ihr Syntheseweg verläuft über die Reaktionsschritte (3) mit teilweise bisher unbekannten Zwischenstufen 6. Die Sila-Riechstoffe 7 sind in Intensität und Duftbereich den Carbinolen 1 ähnlich, doch ist allgemein eine Verschiebung der Duftnote von Maiglöckchen zu Hyazinthe zu beobachten.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 83 (1971), S. 183-183 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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