Process for the preparation of arylalkylmethylsilanes

Details Process for the preparation of arylalkylmethylsilanes Process for the preparation of arylalkylmethylsilanes

1991-07-19

1992-06-23

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 708

Patent

active

051244705

ABSTRACT:
The present invention relates to a process for the preparation of arylalkylmethylsilanes of the formula I ##STR1## where X is CH.dbd.CH, N.dbd.CH, CH.dbd.N or S,
R.sup.1 and R.sup.2 independently of one another are H, halogen, (C.sub.1 to C.sub.4)alkyl, (C.sub.1 to C.sub.4)alkoxy, (C.sub.1 to C.sub.4)alkylthio, (C.sub.1 to C.sub.4)haloalkyl, (C.sub.1 to C.sub.4)haloalkoxy or (C.sub.1 to C.sub.4)haloalkylthio,
R.sup.3 is (C.sub.1 to C.sub.6)alkyl and
m and n are 0, 1 or 2,
which comprises reacting dichloromethylsilane II ##STR2## first with an arylmagnesium halide of the formula III ##STR3## where R.sup.1, R.sup.2, m, n and X are as defined in Formula I and Hal is halogen, at temperatures of from -78.degree. to 0.degree. C., and subsequently with an alkylmagnesium halide of the formula IV

REFERENCES:
patent: 2286763 (1942-06-01), Rochow
patent: 2561178 (1951-07-01), Burkhard
patent: 2813886 (1957-11-01), Ramsden
patent: 2813887 (1957-11-01), Ramsden
patent: 4593112 (1986-06-01), Takamizawa et al.

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