Triethanolamine → N-Cyclohexyl-4,4-dimethyl-3-oxopentanamide

Participants

Reaction Steps

Ethylpivaloylacetate (172 g.), cyclohexylamine (99 g.), triethanolamine (1 g.) and toluene (200 ml.) are mixed in a distillation flask and heated at reflux under a 6 in. Vigreux distillation column. When the head temperature stabilized at 82° C. distillation was begun at a take off to reflux ratio of 1 to 10. Distillation was continued until a head temperature of 110° C. is obtained. The remainder of the solvent is removed in a vacuum and residue is crystallized by trituation with hexane. A yield of 201 g. of product melting at 69°-70° C. is obtained.

Provenance & Evidence