Triethylamine → 7-[1-(2,6-Dimethylpyridin-4-yl)-4-ethoxycarbonylpiperidin-4-ylmethoxy]-1,2,3,4-tetrahydroisoquinoline-2-carboxylic acid benzyl ester

Participants

Reaction Conditions

Reaction Steps

To a solution of 7-(4-ethoxycarbonylpiperidin-4-ylmethoxy)-1,2,3,4-tetrahydroisoquinoline-2-carboxylic acid benzyl ester (140 mg) in ethanol (3 ml) were added triethylamine (0.05 ml) and 4-chloro-2,6-dimethylpyridine (Journal of Heterocyclic Chemistry, vol. 27, p. 1841 (1990)) (45 mg) and the mixture was stirred at 150° C. for 25 hours in a sealed tube. After completion of the reaction, the solvent was evaporated and the obtained residue was purified by silica gel column chromatography (chloroform:methanol=4:1) and dried under reduced pressure to give the title compound (160 mg).

Provenance & Evidence