反应详情

In Example 1 of U.S. Pat. No. 4 138 437, dimethylamine is reacted with 1-dodecanol in the presence of hydrogen and copper chromite as catalyst. To work up the reaction product, it is filtered off from the catalyst and a dodecyldimethylamine is produced as crude product. The crude product is subjected to vacuum distillation to separate off high-boiling byproducts. The distilled C12 -alkyldimethylamine obtained after taking off a first runnings contains about 140 ppm of monomethylamine, 150 ppm of dimethylamine and about 64 ppm of trimethylamine and has a more or less unpleasant odor.

1. filtrationis filtered off from the catalyst