Trichloromethyl silane

When (trichloromethyl)silanes reacted with excess benzene in the presence of aluminum chloride at reflux temperature, (triphenylmethyl)silanes were obtained as the major products along with (diphenylmethyl)silanes as minor products (Eq. (17)). Excess benzene was used to avoid the production of polymeric materials due to polyalkylation of one phenyl group. 

The results obtained from the alkylation of benzene with (trichloromethyl)silanes are summarized in Table XIV. 

As shown in Table XIV, the reactivity of (trichloromethyl)silanes varied depending upon the substituent on silicon. The reactivity and yields of (trichloromethyl)-methyldichlorosilanes were slightly higher than those of (trichloroinethyl)tri-chlorosilanes in the aluminum chloride-catalyzed alkylation as similarly observed in the alkylations with (ai-chloroalkyl)silanes and (dichloroalkyl)silanes. The electron-donating methyl group on the silicon facilitates the alkylation more than the electron-withdrawing chlorine. The minor products, (diphenylmethyl)chloro-silanes, were presumably derived from the decomposition of (triphenylmethyl)-chlorosilanes. 

An example of the first kind can be found in the decomposition of trichloromethyl-silane to give silicon carbide and hydrogen chloride ... 

METHYL- TRICHLOROSILANE Trichloromethyl-silane Flammable Liquid 3 3 2 W... 

Trimethylsilyloxyethylene, 274, 299 3-Trimethylsilyl-l-propyne, 329 Trimethylsilyl trifluoromethanesul-fonate, 118, 149, 187, 321, 329 Trimethyl(trichloromethyl)silane, 336 Triphenylsilane, 334 Triphenylsilane-Di-t-butyl peroxide, 334... 

The thermal decomposition of trichloro- or trifluoro(trichloromethyl)silane or the fluoride ion induced decomposition of trimethyl(trichloromethyl)silane, in the presence of an alkene (Houben-Weyl, Vol. 4/3, p 155 and Vol. El9b, p 1535). 

CARBENE PRECURSORS 2,2-Dimethylvinyl triflate. Fluorodiiodomethane. Phenyl diazomethyl sulfoxide. Ttifluoro(trichloromethyl)silane. 

A fair amount of the work reported on chlorofluorotyclopropanes has been covered already (see pp. 15, 18 and 20). The gas-phase (ca. 1 atm) reaction between trifluoro(trichloromethyl)silane (see p. 204) and a seven-fold excess of tetrafluoroethylene at 140 °C in Pyrex for 22 h yields mainly the expected 1,1-dichlorotetrafluorocydopropane (12b) (59%), but appreciable amounts of 1,1,2,2-tetrachlorodifluorocyclopropane (12e) (12%), perfluorocyclopropane (25%), and... 

Keywords N-Phosphinoyl benzaldimines, trimethyl(trichloromethyl)silane, tetrhydrofuran, room temperature, nucleophilic addition reaction, N-phosphinoyl-a-(trichloromethyl) benzylamines... 

Halogenation is also used as a means of substitution. Trifluoro(trichloromethyl)silane (b. p. 43.5 C) can be made [188] by the chlorination of methyltrichlorosilane and the fluorination of the product with antimony trifluoride (Eq. 3.75) ... 

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