Methods for preparing ethers, ether compositions, fluoroether fire extinguishing systems, mixtures and methods

A fire extinguishing agent comprising a compound selected from the group consisting of CF3CHFCF2OCH2F, CF3CHFCF2OCF2H, CF3CHFCF2OCF3, (CF3)2CHCF2OCH3, (CF3)2CHCF2OCH2F, (CF3)2CHCF2OCHF2, (CF3)2CHCF2OCF3, CF3CF═CFOCH3, CF3CF═CFOCH2F, CF3CF═CFOCHF2, CF3CF═CFOCF3, CF2═CFCF2OCH3, CF2═CFCF2OCH2F, CF2═CFCF2OCF2H, CF2═CFCF2OCF3, (CF3)2C═CFOCH3, (CF3)2C═CFOCH2F, (CF3)2C═CFOCF2H, (CF3)2C═CFOCH3, (CF3)2C═CFOCH2F, (CF3)2C═CFOCF2H, (CF3)2C═CFOCH3, CF2═C(CF3)CF2OCH3, CF2═C(CF3)CF2OCH2F, CF2═C(CF3)CF2OCF2H, and CF2═C(CF3)CF2OCF3.

The composition comprising CF3CHFCF2OCF3.

A method for preparing halogenated ether intermediates comprising:

• providing a photochemical reactor containing an ether having the general formula R3CXY—O—R4, wherein the R3 group is selected from the group comprising hydrogenated alkyl groups, halogenated alkyl groups, or perhalogenated alkyl groups and the R4 group is selected from the group comprising hydrogenated alkyl groups, halogenated alkyl groups, or perhalogenated alkyl groups, X and Y are selected from the group comprising H, I, Br, Cl, or F, and X and Y can be the same as one another or different;
• and
• reacting the ether with a gaseous halogenating agent in the presence of actinic energy to produce a halogenated ether intermediate having the general formula R5CXY—O—R6, wherein the R5 group is selected from the group comprising halogenated alkyl groups, or perhalogenated alkyl groups and the R6 group is selected from the group comprising halogenated alkyl groups, or perhalogenated alkyl groups.

A method for preparing fluoroethers comprising:

• providing a halogenated ether intermediate comprising R5CXY—O—R6, wherein the R5 group is selected from the group comprising hydrogenated alkyl groups, halogenated alkyl groups, or perhalogenated alkyl groups and the R6 group is selected from the group comprising halogenated alkyl groups or perhalogenated alkyl groups, X and Y are selected from the group comprising H, I, Br, Cl, or F, and X and Y can be the same as one another or different, wherein the halogenated ether intermediate includes at least one halogen selected from the group comprising I, Br, or Cl;
• fluorinating the halogenated ether intermediate in the presence of HF and a catalyst to produce a fluoroether comprising R7—O—R8, wherein the R7 group is selected from the group comprising hydrogenated alkyl groups, hydrofluorohalogenated alkyl groups, hydrofluorinated alkyl groups, fluorohalogenated alkyl groups, or perfluorinated alkyl groups and R8 is selected from the group comprising hydrofluorohalogenated alkyl groups, hydrofluorinated alkyl groups, fluorohalogenated alkyl groups, or perfluorinated alkyl groups.

A method for the preparation of fluoroethers comprising:

• providing an ether having at least one halogen selected from the group comprising I, Br, or Cl;
• and
• fluorinating the ether in the presence of liquid HF at a first temperature to produce a first fluoroether having at least one more fluorine atom than the ether.

A mixture within a space comprising an extinguishing compound having the general formula Z1-O-Z2, wherein Z1 is selected from the group comprising CF3CHFCF2—, CF3CF2CF2—, (CF3)2CHCF2—, CHF2CF2—, CF2═C(CF3)—, CF3CF═CF—, CF2═CFCF2—, CF3CH═CF—, CF3CHBrCF2—, CF3CFBrCF2—, or CF2BrCF2— and Z2 is selected from the group comprising —CHF2, —CF3, —CH2CF3, —CH2Br, —CFBr2, or —CF2Br.

A method for one or more of extinguishing, suppressing or preventing a fire in a space by introducing to the space a mixture comprising an extinguishing compound having the general formula Z1-O-Z2, wherein Z1 is selected from the group comprising CF3CHFCF2—, CF3CF2CF2—, (CF3)2CHCF2—, CHF2CF2—, CF2═C(CF3)—, CF3CF═CF—, CF2═CFCF2—, CF3CH═CF—, CF3CHBrCF2—, CF3CFBrCF2—, or CF2BrCF2— and Z2 is selected from the group comprising —CHF2, —CF3, —CH2CF3, —CH2Br, —CFBr2, or —CF2Br.

A fire extinguishing, preventing or suppressing system configured to introduce to a space a mixture comprising an extinguishing compound having the general formula Z1-O-Z2, wherein Z1 is selected from the group comprising CF3CHFCF2—, CF3CF2CF2—, (CF3)2CHCF2—, CHF2CF2—, CF2═C(CF3)—, CF3CF═—, CF2═CFCF2—, CF3CH═CF—, CF3CHBrCF2—, CF3CFBrCF2—, or CF2BrCF2— and Z2 is selected from the group comprising —CHF2, —CF3, —CH2CF3, —CH2Br, —CFBr2, or —CF2Br.