Water → Piperazine, 1-(diphenylmethyl)-4-(2-(1-piperidinylmethyl)-2-propenyl)-

Participants

Reaction Steps

A mixture of 7.0 g of 1-benzhydryl-4-(2-chloromethyl-2-propenyl)-piperazine (0.0205 mole) and 6.98 g of piperidine (0.082 mole) in 150 ml of absolute ethanol is heated until it has dissolved completely, and subjected to reflux for 3 hours. Then, it is conditioned to room temperature and the ethanol is removed by distillation. The resulting crude reaction product is treated with distilled water several times until a solid material is obtained which is then filtered and washed abundantly with water. By recrystallization from ethanol, 7.4 g crystals of 1-benzhydryl-4-(2-(1-piperidinylmethyl)-2-propenyl)-piperazine (I, R1 =benzhydryl, R2 =2-(1-piperidinylmethyl-2-propenyl) are obtained. Yield: 94%; m.p. 99°-102° C.

Provenance & Evidence