# US 10,870,614 B2 · Processes for producing trifluoroiodomethane using metal trifluoroacetates

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- Number: US 10,870,614 B2
- Document ID: US10870614B2
- Status: Granted
- Kind: B2
- Application number: 16/797,690
- Filed: 2020-02-21
- Published: 2020-09-10
- Granted: 2020-12-22
- Earliest claimed: 2019-03-04
- Assignees: Honeywell International Inc.
- Applicants: Honeywell International Inc.
- Inventors: Christian Jungong; Haiyou Wang; Terris Yang
- Web page: https://patentgrep.com/patent/US10870614B2

## CPC

- C07C 17/363: by elimination of carboxyl groups
- C07C 17/093: by replacement by halogens
- C07C 19/16: and iodine
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

The present disclosure provides a process for producing trifluoroiodomethane. The process includes providing a metal trifluoroacetate, iodine monochloride, and a solvent, and reacting the metal trifluoroacetate and iodine monochloride in the presence of the solvent to produce trifluoroiodomethane.

## Claims

### Claim 1

A process for producing trifluoroiodomethane (CF3I), the process comprising:
providing a metal trifluoroacetate, iodine monochloride, and a solvent; and
reacting the metal trifluoroacetate and iodine monochloride in the presence of the solvent to produce trifluoroiodomethane.

### Claim 2 (depends on 1)

The process of claim 1, wherein in the providing step, a mole ratio of the metal trifluoroacetate to the iodine monochloride is from about 0.1:1 to about 2.0:1.

### Claim 3 (depends on 1)

The process of claim 1, wherein in the providing step, the metal trifluoroacetate is at least one selected from the group of lithium trifluoroacetate, potassium trifluoroacetate, sodium trifluoroacetate, rubidium trifluoroacetate, cesium trifluoroacetate, calcium trifluoroacetate, magnesium trifluoroacetate, iron trifluoroacetate, zinc trifluoroacetate, and copper trifluoroacetate.

### Claim 4 (depends on 1)

The process of claim 1, wherein in the providing step, the solvent comprises less than about 500 ppm by volume of water.

### Claim 5 (depends on 1)

The process of claim 1, wherein in the providing step, the solvent is at least one selected from the group of an ionic liquid and a polar aprotic solvent.

### Claim 6 (depends on 5)

The process of claim 5, wherein the solvent is at least one selected from the group of imidazolium salts, caprolactamium hydrogen sulfate, sulfolane, N,N-dimethylacetamide, and dimethyl sulfone.

### Claim 7 (depends on 6)

The process of claim 6, wherein the solvent consists of sulfolane.

### Claim 8 (depends on 1)

The process of claim 1, wherein reacting the metal trifluoroacetate and iodine monochloride is further in the presence of a catalyst.

### Claim 9 (depends on 8)

The process of claim 8, wherein the catalyst includes at least one selected from the group of copper (I) iodide, ferrous chloride, and zinc (II) iodide.

### Claim 10 (depends on 1)

The process of claim 1, wherein in the reacting step, the metal trifluoroacetate, the iodine monochloride, and the solvent are at a temperature from about 100° C. to about 250° C.

### Claim 11

A process for producing trifluoroiodomethane (CF3I), the process comprising:
mixing a metal trifluoroacetate, iodine monochloride, and a solvent; and
heating the metal trifluoroacetate, iodine monochloride, and the solvent to react the metal trifluoroacetate and iodine monochloride to produce trifluoroiodomethane and a metal chloride.

### Claim 12 (depends on 11)

The process of claim 11, further including separating the trifluoroiodomethane from the metal chloride.

### Claim 13 (depends on 11)

The process of claim 11, wherein the process is a continuous process.

### Claim 14 (depends on 11)

The process of claim 11, wherein the process is a batch process.

### Claim 15 (depends on 11)

The process of claim 11, wherein the metal trifluoroacetate is at least one selected from the group of lithium trifluoroacetate, potassium trifluoroacetate, sodium trifluoroacetate, rubidium trifluoroacetate, cesium trifluoroacetate, calcium trifluoroacetate, magnesium trifluoroacetate, iron trifluoroacetate, zinc trifluoroacetate, and copper trifluoroacetate.

### Claim 16 (depends on 11)

The process of claim 11, wherein the solvent is at least one selected from the group of an ionic liquid and a polar aprotic solvent.

### Claim 17 (depends on 16)

The process of claim 16, wherein the solvent is at least one selected from the group of imidazolium salts, caprolactamium hydrogen sulfate, sulfolane, N,N-dimethylacetamide, and dimethyl sulfone.

### Claim 18 (depends on 11)

The process of claim 11, wherein the metal trifluoroacetate and iodine monochloride react in the presence of a catalyst.

### Claim 19 (depends on 18)

The process of claim 18, wherein the catalyst includes at least one selected from the group of copper (I) iodide, ferrous chloride, and zinc (II) iodide.

### Claim 20 (depends on 11)

The process of claim 11, wherein the metal trifluoroacetate, the iodine monochloride, and the solvent are heated to a temperature from about 100° C. to about 250° C.