Methyl Benzoate → 4-(2-Quinolin-2-yl-ethyl)-benzoic acid methyl ester

Participants

Reaction Steps

To a solution of 4-[Triphenyl-phophanyl)-methyl]-benzoic acid methyl ester (1.87 g) in THF (16 ml) under N2 atmosphere at 0° C. was added sodium hydride (165 mg (60%)). After 30 min, quinoline-2-carbaldehyde (0.50 g) was added and the reaction stirred at ambient temperature for 2 h. The reaction mixture was quenched with brine, extracted with chloroform, dried magnesium sulfate, filtered and concentrated to provide the crude alkene. The crude product was placed on a parr shaker in ethanol (15 ml) with palladium hydroxide (200 mg) as the catalyst under 10 PSI of H2. After 40 min, the reaction mixture was filtered through celite and concentrated. Biotage MPLC chromatography eluting with 10-20% ethyl acetate/hexane provided the title compound. MS: (M+H m/z=292.1).

Provenance & Evidence