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  • 1
    Electronic Resource
    Electronic Resource
    Zum gezielten Aufbau von permethylierten Cyclotrisilazanen mit Substituenten in 1,1-, 2- und 2,6-Stellung (1969)
    Springer
    Monatshefte für Chemie 100 (1969), S. 1916-1923 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Reaction of special 1,3-bis(alkylamino)disilazanes with silicon tetrahalides or with dimethyldichlorosilane gives, after metallation (equ. 1, 6, 7) or in presence of triethylamine (equ. 2), permethyl cyclotrisilazanes which are substituted in positions 1,1, 2 or 2,6 resp. The synthesis of a spirosilazane with sixmembered rings (“IX”) according to equ. 3 or 4 was not possible.
    Notes: Zusammenfassung Die Umsetzung geeigneter 1,3-Bis(alkylamino)disilazane—nach Metallierung (Rkk. 1, 6, 7) oder auch in Gegenwart von Triäthylamin (Rk. 2)—mit Siliciumtetrahalogeniden bzw. mit Dimethyldichlorsilan führt zu permethylierten Cyclotrisilazanen, die in 1,1-, 2- oder 2,6-Stellung substituiert sind. Der Aufbau eines Sechsring-spirosilazans (“IX”) gelang hieraus nicht (vgl. Rkk. 3, 4).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01151741
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  • 2
    Electronic Resource
    Electronic Resource
    N-Methylierte Cyclotetrasilazane und Cyclotetrasiloxazane (1971)
    Springer
    Monatshefte für Chemie 102 (1971), S. 1429-1441 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die achtgliedrigen Ringverbindungen IX (Rk. 1), XI (Rk. 12), XI (RRk. 13) und XIV (Rk. 9a) (vgl. Schema 1) wurden erstmalig, XII (Rkk. 4, 8; Schema 2) auf neuen Wegen dargestellt, ihre Eigenschaften beschrieben und ihre Struktur durch Massen-, IR-und NMR-Spektren bestätigt. Sie neigen bei thermischem deer katalytischem Einfluß zum Übergang in sechsgliedrige Ringverbindungen (vgl. Schema 3).
    Notes: Abstract The eightmembered ring compounds IX (equ. 1), XI (equ. 12), XII (equ. 13) and XIV (equ. 9a) (see scheme 1) were prepared for the first time, XII (equ. 4, 8; scheme 2) on several new routes. Their properties are described and their structure confirmed by mass, infrared and nmr spectroscopy. They tend to transform by thermal or catalytic influence into sixmembered ring compounds (compare scheme 3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00917200
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  • 3
    Electronic Resource
    Electronic Resource
    Si-methyl- und-chlorsubstituierte Disilazane (1971)
    Springer
    Monatshefte für Chemie 102 (1971), S. 1817-1824 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Es wurden die bisher unbekannten Methylchlordisilazane (IV), (VII), (VIII) und (IX) dargestellt (Rkk. 6–11), charakterisiert (Tab. 1) und in einige Derivate (XI–XIII) übergeführt.
    Notes: Abstract The hitherto unknown methylchlorodisilazanes Cl2 meSi-NH-Sime 3 (IV), Cl2 meSi-NH-SimeCl2 (VII), Cl3Si-NH-Sime 2Cl (VIII) and Cl3Si-NH-SimeCl2 (IX) (Scheme 1) were prepared (equ. 6–11), characterized by their properties (Table 1) and transformed into the derivatives XI–XIII.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00905656
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  • 4
    Electronic Resource
    Electronic Resource
    Zur Darstellung und Destillation des Oktamethylcyclotetrasilazans (1971)
    Springer
    Monatshefte für Chemie 102 (1971), S. 1834-1843 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Ammonolyse des 1,3-Dichlortetramethyldisilazans (I) führt nicht nur zu Oktamethylcyclotetrasilazan (III), sondern auch zu Hexamethylcyclotrisilazan (II). Das Mengenverhältnis bei der Bildung der beiden Ringsysteme ist, wie bei der Ammonolyse des Dimethyldichlorsilans, weiten Schwankungen unterworfen, die nicht über die jeweilige Konzentration von Dimethyldichlorsilan bzw. I oder den Übergang zum alkalischen Milieu kontrollierbar sind (Schema 1 und Tab. 1). III siedet bei 115°/11 Torr bzw. 239°/760 Torr; es ist im Vak. jedoch bereits unterhalb seines Schmelzpunkts von 97° in hohem Maße flüchtig.
    Notes: Abstract Ammonolysis of 1.3-dichlorotetramethyldisilazane leads to octamethylcyclotetrasilazane but surprisingly also to hexamethylcyclotrisilazane. The ratio of formation of both ringsystems is comparable with the ammonolysis of dimethyldichlorosilane and subject to broad fluctuations which are not controllable by specific concentrations of dimethyldichlorosilane or of 1.3-dichlorotetramethyldisilazane or by changing into alkaline milieu. Octamethylcyclotetrasilazane boils at 115°C/11 mm and 239°C/760 mm resp.; in vacuo it is highly volatile below its melting point of 97°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00905658
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  • 5
    Electronic Resource
    Electronic Resource
    Weitere Reaktionen von 1,3-Dichlordisilazanen und 1,3-Dichlordisiloxanen (1971)
    Springer
    Monatshefte für Chemie 102 (1971), S. 1844-1850 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Spezielle Umsetzungen von 1,3-Dichlordisilazanen werden beschrieben. Die Umsetzung mit einem bestimmten Amin führte zu einer SiNSiN-Verbindung mit 6 verschiedenen Substituenten (I; Rk. 1). Analog bildeten sich mit Hydrazinen Bis(hydrazino)-disilazane der Strukturgruppe NNSiNSiNN (II, III; Rk. 2). Mit Äthylendiamin konnte ein Si2N3C2-Siebenringsystem (IV), mit Bis(trimethylsilyl)harnstoff ein Sechsringsystem Si2N3C (VI), mit Diphenylsilandiol das Cyclotrisildioxazan-Sechsringsystem (VIII, IX) aufgebaut werden. 1,3-Dichlordisiloxan ergab in ähnlichen Umsetzungen erstmalig ein Si2N2OC2-Siebenringsystem (V) und ein Si2N2OC-Sechsringsystem (VII).
    Notes: Abstract Special reactions of 1.3-dichlorodisilazanes give a) with a special amine a SiNSiN-compound with 6 different substituents (I; equ. 1); b) with hydrazines bis(hydrazino)disilazanes of the structural unit NNSiNSiNN (II, III; equ. 2); c) with ethylenediamine a novel Si2N3C2-sevenmembered ring system (IV); d) with bis(trimethylsilyl)urea a sevenmembered ring system Si2N3C (VI); e) with diphenylsilanediol the cyclotrisildioxazane ring system (VIII, IX). Analogous reactions of 1.3-dichlorodisiloxanes lead to the novel sevenmembered ring system Si2N2OC2 (V) and to the sixmembered Si2N2OC-ring system (VII).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00905659
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  • 6
    Electronic Resource
    Electronic Resource
    Spirane mit Germanium im spiralen Zentrum und mit Silicium, Kohlenstoff und Stickstoff als Gerüstatomen Beiträge zur Chemie der Silicium-Stickstoff-Verbindungen, 145. Mitt. (1978)
    Springer
    Monatshefte für Chemie 109 (1978), S. 209-213 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Synthesis of the spirane, systemsA, B, andC was achieved for the first time via reactions 1–3 (scheme 1). Properties, analytical and structural data of the new compounds are given (tables 1–4).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00911962
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  • 7
    Electronic Resource
    Electronic Resource
    Einige Methoxysilane, Disiloxane und Digermoxane mit Geruchswirkung Sila-Riechstoffe. 3. Mitt. (1982)
    Springer
    Monatshefte für Chemie 113 (1982), S. 381-388 
    Details
    ISSN: 1434-4475
    Keywords: Digermoxanes ; Disiloxanes ; Methoxysilanes ; Odour ; Sila-perfumes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The odour of the formerly unknown compounds benzyldimethylmethoxysilane2 a (flower-honey like with a minty component; intensity middle), bis(benzyl)tetramethyldisiloxane4 a (flowerlike; very weak) and bis(benzyl)tetramethyldigermoxane9 (almond-soapy like; relatively strong) was registered and compared with related compounds (for example benzyldimethylmethoxymethane5 a, camphor-radish like). Information is given on preparation and analytical and structural investigation of several methoxysilanes and disioxanes with benzyl and phenethyl groups (compare equations and experimental part).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00799913
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  • 8
    Electronic Resource
    Electronic Resource
    Sila-Riechstoffe und Riechstoffe-Isostere. 11. Mitt. Vergleich von Carbinolen und Silanolen mit Thiocarbinolen und Silanthiolen (1987)
    Springer
    Monatshefte für Chemie 118 (1987), S. 779-788 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF00809228
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  • 9
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Silicium-Stickstoff-Verbindungen, 166. Mitt.: Organylaminosubstitutionen an Hexachlordisiloxan (1990)
    Springer
    Monatshefte für Chemie 121 (1990), S. 865-874 
    Details
    ISSN: 1434-4475
    Keywords: Disiloxanes ; Organylaminosilanes ; Alkanolysis ; Mass spectra interpretation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Reaction of hexachlorodisiloxane with primary and secondary amines leads — in dependence of stoichiometry — to numerous partially and totally organylamino substituted disiloxanes. Partially aminosubstituted chlorodisiloxanes are very sensitive to moisture and can be converted into disiloxanes with different organylamino groups. Exhaustive alkanolysis substitutes amino as well as chloro groups giving hexaalkoxydisiloxanes, but partial alkanolysis may substitute amino in preference to chloro groups. Mass spectra can be interpreted by abstraction ofRR′N·,RR′N+,RR′NH and (RR′N minus H) units. Most of the compounds are colourless liquids but hexakis(piperidino)-disiloxane melts at 270 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00808949
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  • 10
    Electronic Resource
    Electronic Resource
    Mono- und Bis(trimethylsilyl)formamid (1969)
    Springer
    Monatshefte für Chemie 100 (1969), S. 1901-1909 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Reactions of formamide with hexamethyldisilazane (equ. 3) or with trimethylsilylcyanide (equ. 1) in benzene give trimethylsilylformamide (I). After metallation of I and succeeding reaction with trimethylchlorosilane at −65°, bis(trimethylsilyl)formamide (II) can be isolated with 30% yield (equ. 13). Infrared as well as nmr spectra point to a N,N-, not to a N,O-bis(trimethylsilyl)derivative in the compound II. The solvent free reaction of formamide with hexamethyldisilazane leads in high yield to triazine (equ. 5, 6); this method is superior to all other triazine syntheses.
    Notes: Zusammenfassung Die Umsetzung von Formamid mit Hexamethyldisilazan (Rk. 3) oder mit Trimethylsilylcyanid (Rk. 1) in Benzol ergibt Trimethylsilylformamid (I). Dieses läßt sich nach metallierung durch nachfolgende Umsetzung mit Trimethylchlorsilan bei −65° in mäßiger Ausb. (30%) in Bis(trimethylsilyl)formamid (II) überführen (Rk. 13). Den NMR- und IR-Spektren nach liegt II in der N,N-, nicht in der N,O-Bis(trimethylsilyl)-carbonsäureamid-Struktur vor. Die direkte Umsetzung von Formamid mit Hexamethyldisilazan ergibt in hoher Ausbeute Triazin (Rkk. 5, 6). Diese Methode ist allen anderen Triazin-Synthesen überlegen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01151739
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