p-Anisoyl chloride → 4-Methoxy-N-{6-[2-(pyridin-2-yl)ethyl]-2H-1,3-benzodioxol-5-yl}benzamide

Participants

Reaction Steps

2-(4,5-Methylenedioxy-2-nitrostyryl)pyridine (10.8 g., 0.04 mole) is hydrogenated on a Parr apparatus in 200 ml. of ehtanol with 2.0 g. of 10% palladium on carbon as catalyst. After the reduction is complete, the mixture is filtered and the solvent evaporated. The residue consisting of 2-(4,5-methylenedioxy-2-aminophenethyl)pyridine is immediately dissolved in pyridine (100 ml.) and anisoyl chloride (7.5 g., 0.044 mole) added. The solution is stirred for 30 min. A basic workup according to the procedure of Example 25 affords 10 g. of 4-methoxy-4',5'-methylenedioxy-2'-[2-(2-pyridyl)ethyl]benzanilide obtained analytically pure by crystallization from ethyl acetate.

Provenance & Evidence