ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
The Reaction between Mono- or Dichloroalkylphosphites and Hexa- or Heptamethyldisilazane The Preparation of Silylated Amidophosphites and N-Methylimido-bridged DiphosphitesDialkylmonochlorophosphites react with hexa- or heptamethyldisilazane with replacement of a trimethysilyl group to give dialkyl (trimethylsilyamido)- or -[methyl(trimethylsilyl)-amido]phosphites, (RO)2PNHSi(CH3)3 (4) or (RO)2PN(CH3)3 (8). Compounds such as 4 exist in a temperatur-dependent tautomeric equilibrium with the imide form, (RO)2P)H)=NSi(CH3)3 (5). it is also possible to split off two trimethylsilyl groups from heptamethyldisilazane to obtain the previously unknown methylimido-bis (dialkylphosphites), CH3N[P(OR)2]2 (9). The reaction between alkyldichlorophosphites and heptamethyldisilazene leads to alkyl bis[methyl(trimethylsily)amido]phosphites, [CH3)3SiNCH3]2POR (10). - )31-n.m.r. spectra are reported.
Notes:
Dialkymonochlorophosphite reagieren mit Hexa- bzw. Heptamethyldisilazan unter substitution einer Trimethylsilygruppe zu Dialkyl-(trimethylsilyamido)- bzw. -[methyl(trimethylsily)-amido]phosphiten, (RO)2PNHSi(Ch3)3 (4) bzw. (RO)2PN(CH3)3 (8). Verbindungen vom Typ 4 stehen in einem Temperaturabhängigen tautomeren Gleichgewicht mit der Imid-form, (RO)2P(H)—NSi(CH3)3 (5). Durch Abspaltung beider Trimethylsilygruppen vom Heptamethyldisilazan erhält man die bisher unbekannte Methylimido-bis(dialkyphosphite), CH3N[P(OR)2]2 (9). Die Reaktion von alkyldichlorophosphiten mit Heptamethyldisilazan liefert Alkyl-bis[methyl(trimethylsly)amido]phosphite, ([CH3)3SiNH3]2POR (10). - Die 31P-NMR-spektren werden Diskutiert.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19741070126
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