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US 8,377,406 B1Granted
Synthesis of bis(fluorosulfonyl)imide
AssigneeBoulder Ionics Corporation
InventorsRajendra P. Singh, Jerry Lynn Martin, Joseph Carl Poshusta
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Abstract
The present invention provides methods for producing bis(fluorosulfonyl) compounds of the formula: F—S(O)2—Z—S(O)2—F I by contacting a nonfluorohalide compound of the formula: X—S(O)2—Z—S(O)2—X with bismuth trifluoride under conditions sufficient to produce the bis(fluorosulfonyl) compound of Formula I, where Z and X are those defined herein.
Claims19
A method for producing a fluorinated compound of the formula:
- F—S(O)2—Z—S(O)2—F from a nonfluorohalide compound of the formula:
- X—S(O)2—Z—S(O)2—X, said method comprising contacting said nonfluorohalide compound with BiF3 under conditions sufficient to produce said fluorinated compound and BiX3 as a byproduct, wherein
- each X is independently a halide, provided at least one of X is a non-fluoro halide;
- Z is NR1 or CR2R3;
- R1 is H, alkali metal, alkyl, or a nitrogen protecting group;
- and
- each of R2 and R3 is independently H, halide, alkyl, or haloalkyl.
4 more elements
A method for producing a bis(fluorosulfonyl)imide of the formula:
- F—S(O)2—NR1—S(O)2—F
- said method comprising contacting a bis(nonfluorohalosulfonyl)imide of the formula:
- X—S(O)2—NR1—S(O)2—X
- with BiF3 under conditions sufficient to produce said bis(fluorohalosulfonyl)imide,
- wherein
- each X is independently a halide provided at least one of X is a non-fluoro halide;
- and
- R1 is H, alkali metal, alkyl, or a nitrogen protecting group.
5 more elements
Dependencies are inferred from the claim text.