Diisopropylethylamine → 4-Hydroxy-4-phenyl-3,4,5,6-tetrahydro-2H-[1,2]bipyridinyl-5'-carboxylic acid (3-iodo-4-methyl-phenyl)-amide

Participants

Reaction Steps

A solution of 6-chloro-N-(3-iodo-4-methyl-phenyl)-nicotinamide (100 mg, 0.26 mmol), a catalytic amount of DMAP, diisopropylethyl amine (0.14 mL, 8.1 mmol), 4-hydroxy-4-phenyl piperidine (140 mg, 8.1 mmol) in 5 mL in dioxane was heated at 95° C. in a sealed tube for about 48 h. The reaction mixture was then cooled and partitioned between EtOAc and aq. saturated Na2CO3. The organic layer was then collected, dried over Na2SO4 filtered and concentrated. The residue was chromatographed with a silica gel column and 20-100% EtOAc in hexanes to afford the product (90 mg. Yield: 65%). HRMS m/z calcd for C24H24N3O2I [M+H]+: 514.0986. Found: 514.0987.

Provenance & Evidence