| 摘要 |
PROBLEM TO BE SOLVED: To provide a large-scale method for preparing imide disulfuryl being a method for synthesizing a compound in the raw material of lithium bis(fluorosulfonyl)imide using no phosphorous chemical reaction, having short reaction time and a high yield, high in the purity of products and capable of the safe treatment of substance and reaction.SOLUTION: Provided is a method for preparing imide disulfuryl where halosulfonyl isocyanate is reacted with halosulfonic acid for 2 to 30 min at a temperature of 180 to 300°C exceeding the decomposition starting temperature of imide disulfuryl halide represented by formula (I) as a reaction product under the pressure of 50 to 500 Bar, thereafter, the reaction mixture is cooled to 0 to 150°C, and COis separated from the obtained reaction mixture. In the above method, the desired imide disulfuryl halide does not cause decomposition, the yield thereof is high, further, reaction time is short, and products show high purity.SELECTED DRAWING: None |
