Toluene → HCID 13094166, compound

Participants

Reaction Steps

A mixture of 4.5 parts of 4-oxo-1-(2-pyridinyl)cyclohexanecarbonitrile, 5.2 parts of ethyl 4-phenyl-4-piperidinecarboxylate, 1 part of 4-methylbenzenesulfonic acid and 225 parts of methylbenzene is stirred and refluxed overnight using a water-separator. The reaction mixture is evaporated and the residue is crystallized from 2-propanol, yielding 4.5 parts (45%) of ethyl 1-[4-cyano-4-(2-pyridinyl)-1-cyclohexeneyl]-4-phenyl-4-piperidinecarboxylate; mp. 160° C.

Provenance & Evidence