ChemicalBook CAS DataBase List N-Phenyl-bis(trifluoromethanesulfonimide)

N-Phenyl-bis(trifluoromethanesulfonimide) synthesis

5synthesis methods

Product Name:N-Phenyl-bis(trifluoromethanesulfonimide)
CAS Number:37595-74-7
Molecular formula:C8H5F6NO4S2
Molecular Weight:357.25

Add methylene chloride, aniline, 4-dimethylaminopyridine (DMAP), and triethylamine to a reactor equipped with a thermometer, distillation device, and mechanical stirring. When the vacuum of the reactor is evacuated to -0.095MPa and cooled to -40°C, trifluoromethanesulfonyl fluoride gas is introduced and then stirred at -20°C ~ 0°C and 0.02MPa ~ 0.1MPa reaction pressure, and react for 6 hours Finally, the excess trifluoromethanesulfonyl fluoride gas in the reactor is released and collected by cooling. After the inside of the reactor is brought to normal pressure, 500 mL of water is added, and the liquid is separated. A light yellow solid is obtained after the organic phase is heated to 40°C and methylene chloride is distilled. The light yellow solid is recrystallized with toluene to obtain 650g of white crystal N-Phenyl-bis(trifluoromethanesulfonimide).

358-23-6 Synthesis

358-23-6
575 suppliers
$10.00/1g

62-53-3 Synthesis

62-53-3
620 suppliers
$10.00/1g

N-Phenyl-bis(trifluoromethanesulfonimide)

37595-74-7
413 suppliers
$5.00/1g

Yield:37595-74-7 94%

Reaction Conditions:

Stage #1: trifluoromethylsulfonic anhydride;anilinewith 1,4-diaza-bicyclo[2.2.2]octane in acetonitrile at 40; under 600.06 - 1725.17 Torr; for 8 h;Sealed tube;Large scale;
Stage #2: with dmap in dichloromethane;acetonitrile; under 450.045 - 1575.16 Torr; for 15 h;Sealed tube;Large scale;

Steps:

1 Example 1

Add 9.3 kg of aniline, 40 L of acetonitrile, 13 kg of triethylenediamine to the 100L stainless steel reactor, connect the trifluoromethanesulfonyl fluoride cylinder; evacuate the reactor to -0.09Mpa, and pass in 20 kg of trifluoromethanesulfonyl fluoride Seal the reaction kettle with gas; stir the reaction for 8 hours at 40°C. Observe that the pressure of the reaction kettle gradually decreases from 0.23Mpa to 0.08Mpa and keeps no obvious change within half an hour. Open the acid fluoride recovery line to recover the excess acid fluoride. After the pressure of the reactor is reduced to 0 MPa, close the acid fluoride recovery line. Turn on the distillation system and distill off 34L of acetonitrile. Then add 40L of dichloromethane and 0.4 kg of 4-dimethylaminopyridine to the reaction kettle, and then introduce 20 kg of trifluoromethanesulfonyl fluoride again. The reaction was blocked for 15 hours, and the pressure of the reaction kettle was reduced from 0.21 MPa to 0.06 MPa. Recover excess trifluoromethanesulfonyl fluoride, distill off 38L of solvent to obtain a yellow viscous solid, then add 30 kg of ethanol, quickly stir, filter to obtain white crystals, and dry to obtain fine N-phenylbistrifluoromethanesulfonyl The amine was 33.6 kg, the detected purity was 99.2%, and the yield was 94.0%.

References:

CN111269152,2020,A Location in patent:Paragraph 0047-0050