Cyclopropanecarboxaldehyde → HCID 118022050, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of compound from Example 109 (64.6 mg, 0.2 mmol) in MeOH (3 mL) and AcOH (0.3 mL) was added cyclopropanecarbaldehyde (14.0 mg, 0.2 mmol) dropwise with stirring at 30° C. NaBH3CN (24.5 mg, 0.4 mol) was added in portions at 30° C. The reaction mixture was stirred for 2 h at 30° C. It was then quenched with saturated aqueous NH4Cl (5 mL), extracted with EtOAc (20 mL), dried over Na2SO4, filtered and concentrated. The residue was purified by prep-HPLC to give the title compound (10.0 mg, 13.2%) as a light green solid. 1H NMR (Methanol-d4 400 MHz): δ 7.55 (d, J=2.4 Hz, 1H), 7.36 (dd, J=8.4, 2.4 Hz, 1H), 7.16-7.07 (m, 2H), 6.61 (d, J=2.4 Hz, 1H), 3.94 (s, 3H), 3.66 (s, 3H), 3.05 (s, 2H), 2.95 (s, 3H), 1.21-1.14 (m, 1H), 0.64-0.56 (m, 2H), 0.35-0.28 (m, 2H). LCMS (M+H)+ 378.

Provenance & Evidence