Preparation of hydrogenosilanes by redistribution

Details Preparation of hydrogenosilanes by redistribution Preparation of hydrogenosilanes by redistribution

1986-03-06

1988-05-24

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 708, C07F 718

Patent

active

047467525

ABSTRACT:
Hydrogenated silanes are facilely prepared by redistribution, by reacting (1) a silane having the formula H.sub.m SiX.sub.4-m in which X is halogen or an alkoxy group and m is an integer equal to 0, 1, 2 or 3, with (2) an alkyl or aryl hydrosilane having the formula R.sub.n H.sub.p SiX'.sub.4-(n+p) in which X' is halogen or an alkoxy group, R is an alkyl or aryl group and n and p, which may be identical or different, are integers equal to 1, 2 or 3, with the proviso that n+p.ltoreq.4, in the presence of (3) a catalytically effective amount of a catalyst comprising (i) a quaternary ammonium salt having the formula R'.sub.4 NY or a quaternary phosphonium salt having the formula R'.sub.4 PY, in which formulae R', which may be identical or different, are each a monovalent hydrocarbon radical and Y is halogen, (ii) a tertiary amine of the general formula NR'R"R"', in which R', R" and R"', which may be identical or different, are monovalent hydrocarbon radicals, or (iii) an ion exchange resin comprising tertiary amine or quaternary ammonium groups.

REFERENCES:
patent: 2834648 (1958-05-01), Bailey et al.
patent: 3322511 (1967-05-01), Weyenberg
patent: 3399222 (1968-08-01), Weyenberg
patent: 3445200 (1969-05-01), Dunogues et al.
patent: 3465019 (1969-09-01), Berger

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