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US 12,662,459 B2Granted
Method for the synthesis of 3-R-1,4,2-dioxazol-5-ones
AssigneesTesla, Inc., Panasonic Holdings Corporation
InventorsDavid S. Hall, Jeffery Raymond Dahn, Toren Hynes
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Abstract
Provided are methods of preparing 3-R-1,4,2-dioxazol-5-one compounds using convenient and efficient methods. Also provided are 3-R-1,4,2-dioxazol-5-one compounds produced using the methods described.
Claims19
A method of preparing a 3-R-1,4,2-dioxazol-5-one compound, comprising:
- combining a first reaction mixture, a second reaction mixture and a third reaction mixture to form a fourth reaction mixture, the first reaction mixture comprising hydroxylamine hydrochloride, triethylamine, and a first organic solvent, the second reaction mixture comprising an R-substituted acyl chloride, the third reaction mixture comprising triethylamine;
- adding N,N′-carbonyldiimidazole to the fourth reaction mixture to form a fifth reaction mixture;
- and
- obtaining a 3-R-1,4,2-dioxazol-5-one compound from the fifth reaction mixture.
1 more element
A one-pot method of preparing a 3-R-1,4,2-dioxazol-5-one compound, comprising:
- combining hydroxylamine hydrochloride, triethylamine, a first organic solvent and a second organic solvent to form a first reaction mixture;
- adding an R-substituted acyl chloride and additional triethylamine to the first reaction mixture to form a second reaction mixture;
- adding N,N′-carbonyldiimidazole to the second reaction mixture to form a third reaction mixture;
- adding an acid to the third reaction mixture to form a quenched reaction mixture;
- and
- obtaining a 3-R-1,4,2-dioxazol-5-one compound from the quenched reaction mixture.
3 more elements
Dependencies are inferred from the claim text.