Triethylamine → HCID 24950096, compound

Participants

Reaction Steps

To a solution of (S)-5-methyl-4-(piperazin-1-yl)-5,7-dihydrothieno[3,4-d]pyrimidine dihydrochloride (1 g, 3.23 mmol) and 2-(4-chlorophenyl)-3-(pyrrolidin-1-yl)propanoic acid (2 g, 7.88 mmol) in DCM (40 mL) were added HBTU (1.5 g, 3.96 mmol) and triethylamine (2.75 mL, 19.8 mmol). The mixture was stirred at room temperature for 1 hour. The solvent was removed, and the residue was dissolved in ethyl acetate (200 mL) and washed with brine (5×100 mL) and water (3×100 mL). The organic phase was dried and concentrated. The residue was purified by silica gel chromatography, eluting with ethyl acetate-DCM/MeOH (20:1) to give 2-(4-chlorophenyl)-1-(4-((S)-5-methyl-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl)piperazin-1-yl)-3-(pyrrolidin-1-yl)propan-1-one (0.713 g, 46.7%). 1H NMR (CDCl3, 400 MHz) δ 8.47 (s, 1H), 7.38-7.28 (m, 4H), 4.75 (m, 1H), 4.54 (m, 1H), 4.17 (m, 2H), 3.88-3.25 (m, 14H), 2.12 (m, 4H), 1.43 (m, 3H). MS (APCI+) [M+H]+ 473.

Provenance & Evidence