Sulfuric Acid → N-(1,1-dimethyl-3-dimethylaminopropyl)acrylamide

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Reaction Conditions

Reaction Steps

A resin flask is cooled to 0° C. and 450 grams (8.5 moles) of acrylonitrile, 1020 grams (10 moles) of sulfuric acid and 37 grams of water are added. To this mixture are then added 475 grams (4.2 moles) of the 1-dimethylamino-3-methyl-2-butene prepared as described above, and 8.5 grams of 2,6-di-t-butyl-p-cresol. The mixture is stirred at 68° C. for about 1 hour and is then neutralized with about 30% sodium hydroxide. The organic layer is separated, diluted with 2050 ml. of methanol and neutralized with ammonia. An additional 1000 ml. of methanol is added and the solution is filtered. The methanol is stripped from the filtrate and the residue is distilled. There is obtained 400 grams (64.5% of the theoretical amount) of the desired N-(1,1-dimethyl-3-dimethylaminopropyl)acrylamide boiling at 75°-92° C./0.25-0.9 mm. The nitrogen analysis is 15.4%, as compared with a theoretical value of 15.2%.

Provenance & Evidence