ISSN:
0009-2940
Schlagwort(e):
Disilylmethane
;
Methyldisilane
;
Silanes
;
Silicon carbide, hydrogenated, amorphous (a-SiC:H)
;
Chemistry
;
Inorganic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Disilylmethane is available in a four-step synthesis starting with phenylsilane. This is converted into chlorophenylsilane by HCl/AlCl3. The reaction of PhSiH2Cl and dibromomethane with magnesium in tetrahydrofuran affords bis(phenylsilyl)-methane, which yields bis(bromosilyl)methane by treatment with anhydrous hydrogen bromide. (BrH2Si)2CH2 is converted into disilylmethane by reduction with LiAlH4 in a two-phase system using a phase-transfer catalyst. - Methyldisilane is available by alkylation of a monohalodisilane, XSi2H5 (X = Cl, Br), with methyllithium in a high-boiling ether or by silylation of bromomethylsilane with silylpotassium. Due to secondary silylation reactions the overall yields of methyldisilane are low in all cases.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/cber.19901231102
