Uses
Used to prepare dyes. Industrially used in natural gas and refinery process streams. They also are used in polymer industry as monomers. Amines find use as additives for lubricating oils, engine fuels, and asphalt, and are producers of ethanolamines.
Synthesis
Put into 50 gram 2 into 1000ml autoclave, 4,6- trifluorobenzonitriles, 2.5 grams of raney-ni, 75 gram 25% of ammonia, 500 grams of methanol, control temperature to be 90 DEG C, and mixing speed is 350r/min, are passed through hydrogen hydrogenation, hydrogenation pressure 1mpa, logical hydrogen time 8 Hour reaction terminates, filtering catalyst raney-ni, the methanol in distillation gained filtrate, and distillation terminates addition dichloromethane extraction Take, extract elder generation normal pressure concentrated solvent, then vacuum distillation product, obtain 43.6 grams of product, 2,4,6- trifluoromethyl benzonitrile amine contents 99%, yield is calculated as 85% with 2,4,6- trifluorobenzonitriles.
References
[1] Patent: CN106349083, 2017, A. Location in patent: Paragraph 0025; 0026
[2] Patent: CN108586267, 2018, A. Location in patent: Paragraph 0096-0102
[3] Patent: CN107778183, 2018, A. Location in patent: Paragraph 0051; 0052; 0054; 0056; 0058; 0072; 0074; 0076
