Preparation of cyclotetrasiloxanes aliphatic chlorides and acyl

Details Preparation of cyclotetrasiloxanes aliphatic chlorides and acyl Preparation of cyclotetrasiloxanes aliphatic chlorides and acyl

1981-07-10

1982-05-11

Shaver, Paul F.

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

Organic compounds

Silicon containing

556460, 556452, 556461, 260544Y, 260544D, 260544L, 260398, 260408, 570181, 570189, 570216, 423325, 423341, C07F 708

Patent

active

043294839

ABSTRACT:
A method for preparing cyclotetrasiloxane, aliphatic chlorides and/or acyl chlorides from a chlorosilane and an acyloxy compound is disclosed. The chlorosilane and the acyloxy compound may be present as substantially equimolar amounts of separate compounds or they may be present in the same molecule in equimolar amounts. The reactants are merely heated sufficiently, with or without a soluble halide salt catalyst, to form the products. Advantageously this method can provide cyclotetrasiloxanes having water-sensitive radicals such as silicon-bonded chlorine atoms and/or silicon-bonded acyl chloride radicals.

REFERENCES:
patent: 2891980 (1959-06-01), Gilbert et al.
patent: 3803195 (1974-04-01), Nitzsche et al.
patent: 4032557 (1977-06-01), Spork et al.
patent: 4108882 (1978-08-01), Mahone
patent: 4197251 (1980-04-01), Hirakawa et al.

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