1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 2-(3-Chloro-pyridin-2-ylsulfanyl)-1-(8-methyl-3,4-dihydro-2H-quinolin-1-yl)-ethanone

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Reaction Steps

To a solution of (3-chloro-pyridin-2-ylsulfanyl)-acetic acid (19, 0.27 g, 1.3 mmol) in 12 mL of dry THF at 0° C. was added neat 8-methyl-1,2,3,4-tetrahydroquinolin (0.20 g, 1.3 mmol) followed by addition of DMAP (0.19 g, 1.6 mmol) and EDCI (0.31 g, 1.6 mmol). The reaction was stirred for 20 h at room temperature under N2. The reaction mixture was diluted with 50 mL of CH2Cl2, washed with H2O, 10% citric acid, NaHCO3 (saturated), brine, dried over Na2SO4 and concentrated. The crude was purified by column chromatography (hexanes/EtOAc) to give 0.15 g (33% yield) of the target 20 as an off-white solid. MS (APCI) m/z: 333.1 (100%, [M+H]+, 186.0 (35%, [M−147+H]+; HPLC purity: 100%; Anal. Calcd. for C17H17ClN2OS: C, 61.34; H, 5.15; N, 8.42; Cl, 10.65; S, 9.63. Found: C, 61.04; H, 5.28; N, 8.36; Cl, 10.78; S, 9.68.

Provenance & Evidence