Triethylamine → HCID 10048117, compound

Participants

Reaction Steps

A solution of (2R)-4-bromobenzenesulfonic acid-8-methyl-2,3-dihydro-[1,4]dioxino[2,3-f]quinolin-2-ylmethyl ester (0.5 g, 1.1 mmol), 3-(5-cyano-1-methyl-indol-3-yl)propylamine (0.33 g, 1,4 mmol) and triethylamine (0.23 mL, 2.2 mmol) in dimethylsulfoxide (20 mL) was heated at 90° C. under nitrogen for 16 hours. The reaction mixture was quenched with 1N sodium hydroxide and extracted with methylene chloride (3×100 mL). The organic layer was washed with water (3×150 mL), dried over anhydrous sodium sulfate, filtered and the solvent was removed under vacuum. The crude oil was column chromatographed on silica gel (10% methanol-ethyl acetate). The product-containing fractions were concentrated in vacuum to give 0.2 g of the (S)-enantiomer of the title compound as a brown oil. The dihydrochloride salt was prepared in ethyl acetate as a yellow solid (decomposed at 148° C.).

Provenance & Evidence