Acetyl chloride → HCID 59598512, compound

Participants

Reaction Steps

To a round-bottom flask were added (R)-tert-butyl 2-((S)-(2-aminoethoxy)(6-fluoro-3′-methylbiphenyl-2-yl)methyl)morpholine-4-carboxylate (280 mg, 0.63 mmol), triethylamine (0.19 mL, 1.89 mmol) and anhydrous CH2Cl2 (15 mL). The mixture was cooled in an ice bath and a solution of acetyl chloride (49.2 mg, 0.045 mL, 0.63 mmol) was added. The reaction mixture was allowed to warm slowly to rt and stirred until the reaction was complete (ca 1˜2 h). The solvent was removed by evaporation, and the residue was purified by preparative tlc to give (R)-tert-butyl 2-((S)-(2-acetamidoethoxy)(6-fluoro-3′-methylbiphenyl-2-yl)methyl)morpholine-4-carboxylate (202 mg, 66%). 1H NMR (300 MHz, CDCl3): δ=1.45 (s, 9 H), 1.93 (s, 3 H), 2.38 (s, 3 H), 2.87˜3.2 (m, 6 H), 3.32˜3.92 (m, 5 H), 4.28 (d, 1 H), 7.01˜7.25 (m, 3 H), 7.28˜7.37 (m, 4 H), 9.41-9.54 (s, 1 H). MS (E/Z): 487 (M+H+)

Provenance & Evidence