Acetic Acid → 75051-59-1

Participants

Reaction Steps

To a stirred mixture of 52.6 parts of 1-(4-methoxyphenyl)piperazine dihydrochloride, 100 parts of acetic acid and 100 parts of water is added dropwise, during a 1.50 hours-period, a solution of 20.8 parts of sodium nitrite in 100 parts of water at a temperature between 0° and 5° C. Upon completion, stirring is continued for 30 minutes. The reaction mixture is diluted with water. The precipitated product is filtered off and crystallized from 2-propanol, yielding 22.5 parts of 1-(4-methoxyphenyl)-4-nitrosopiperazine; mp. 94.5° C.

Provenance & Evidence