# US 2010/0168458 A1 · Process for converting si-h compounds to si-halogen compounds

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- Number: US 2010/0168458 A1
- Document ID: US20100168458A1
- Status: Published application
- Kind: A1
- Application number: 12/665,858
- Filed: 2008-06-11
- Published: 2010-07-01
- Earliest claimed: 2007-07-04
- Assignees: Wacker Chemie AG
- Inventors: Konrad Mautner; Werner Geissler; Gudrun Tamme
- Web page: https://patentgrep.com/patent/US20100168458A1

## CPC

- C07F 7/123: {by reactions involving the formation of Si-halogen linkages}
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)

## Abstract

Silicon compounds having Si—H groups are converted into silicon compounds having Si—X groups by reaction with HX in the gas phase in the presence of a quaternary ammonium or phosphonium halide catalyst or an ionic chloride of a heterocycle organically substituted on the heteroatom.

## Claims

### Claim at position 1

-5. (canceled)

### Claim 6

A process for converting silicon compounds which have Si—H bonds into silicon compounds which have Si-halogen bonds, comprising reacting the silicon compounds having Si—H bonds in the gas phase with hydrogen halide in the presence of at least one catalyst selected from the group consisting of
(a) tetraorganophosphonium halides,
(b) tetraorganoammonium halides, and
(c) ionic halides of heterocycles which are organically substituted on the heteroatom.

### Claim 7 (depends on 6)

The process of claim 6, wherein the silicon compounds are silanes of the formula 1
RxSiH4-x (1),
where
R is a monovalent, C1-C18-hydrocarbon radical optionally substituted by halogen radicals or is a halogen radical and
x is 1, 2 or 3.

### Claim 8 (depends on 6)

The process of claim 6, wherein the hydrogen halide is hydrogen chloride.

### Claim 9 (depends on 7)

The process of claim 7, wherein the hydrogen halide is hydrogen chloride.

### Claim 10 (depends on 6)

The process of claim 6, wherein at least one of:
(a) tetraorganophosphonium halides of the formula 2
R14PX1 (2)
and
(b) tetraorganoammonium halides of the formula 3
R24X2, (3)
where
R1 and R2 are each an optionally halogen-substituted, optionally heteroatom-containing C1-C18-hydrocarbon radical and
X1 and X2 are each a halogen atom,
are used as catalysts (a) and (b), respectively.

### Claim 11 (depends on 6)

The process of claim 6, wherein at least one of:
imidazolium salts of the formula 4
or
pyridinium salts of the general formula 5
where
R8 is hydrogen or are each an optionally halogen-substituted, optionally heteroatom-containing C1-C18-hydrocarbon radical and
R7, R9 and R10 have the meanings of R1 and R2, and
X3 and X4 are each a halogen atom,
are used as catalysts (c).