Iodine → (3-Methylphenyl) (1-methyl-4-piperidinyl)methanone

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To 5 parts of magnesium are added 2.18 parts of 1,2-dibromoethane and a small amount of iodine to initiate the reaction. Then there is added dropwise a solution of 28 parts of 4-chloro-1-methylpiperidine in 180 parts of tetrahydrofuran while the mixture is heated to 70° C. After cooling, there is added dropwise a solution of 14 parts of 3-methylbenzonitrile in 90 parts of tetrahydrofuran. Upon completion, stirring is continued for 1 hour at reflux temperature. The reaction mixture is cooled and poured onto a solution of 75 parts of ammonium chloride in water. The product is extracted with 2,2'-oxybispropane. The extract is washed with water, dried, filtered and evaporated, yielding 35 parts of (3-methylphenyl) (1-methyl-4-piperidinyl)methanone as an oily residue.

Herkunft & Nachweise