287-29-6Relevant articles and documents
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Pozdnyakova,M.V. et al.
, (1966)
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Method of preparing silacycloalkanes
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, (2008/06/13)
According to the present invention, a method of preparing a silacycloalkane, comprising the steps of (A) adding a substituted silacycloalkane having the formula: wherein X1is —F, —Cl, —Br, or —OR1and X2is X1or H, wherein R1is C1-C8hydrocarbyl, and n is 1, 2, or 3, to a suspension of lithium aluminum hydride in a glycol diether at a temperature not greater than 50° C. to form a mixture, wherein the glycol diether consists essentially of a linear arrangement of oxyalkylene units having formulae independently selected from —OCH2CH2—, —OCH2CH(CH3)—, and —OCH2CH(CH2CH3)—, and end-groups having the formulae —R2and —OR2, wherein each R2is independently selected from C1-C8alkyl, phenyl, and C1-C8alkyl-substituted phenyl, provided the glycol diether has a normal boiling point of at least 85° C. and a viscosity not greater than 3000 mm2/s at 25° C.; and (B) distilling the mixture under reduced pressure at a temperature not greater than 50° C. to remove the silacycloalkane.
SILAETHENE I. DARSTELLUNG UND CHARAKTERISIERUNG VON MONOSILACYCLOBUTANEN
Auner, N.,Grobe, J.
, p. 25 - 52 (2007/10/02)
Monosilacyclobutanes of the type RR' are prepared by ring closure reactions of 3-halopropylhalosilanes and by substitution of SiCl containing silacyclobutane rings with organometallic reagents (RMgX, LiR, NaCp).Under optimal experimental conditions yields between 50 and 95percent can be obtained by both procedures.Characterization of the compounds is accomplished by analytical (C, H, N) and NMR, IR and mass spectroscopic investigations.
