Dimethyl Sulfide → HCID 136176942, compound

Participants

Reaction Steps

To a solution of 4-(3,5-dimethylisoxazol-4-yl)-3-(4-methoxyphenyl)-1-methyl-1H-pyrazole-5-carbaldehyde (4.1 mg, 0.013 mmol) in diethyl ether (3 mL) was added LiBH4 (12 mg, 0.55 mmol) and stirred at room temperature over night. The reaction was then quenched with water and extracted with EtOAc, filtered through a phase separator and concentrated. To the raw product in DCM (1 mL) was added BF3.Me2S (1 M solution in DCM, 0.2 mL, 0.2 mmol) and stirred over night at room temperature. The formed precipitate was twice washed with 0.5 mL DCM, dissolved in MeOH and purified on preparative HPLC to give E11 4-(4-(3,5-dimethylisoxazol-4-yl)-5-(hydroxymethyl)-1-methyl-1H-pyrazol-3-yl)phenol (2.8 mg, 0.009 mmol, 71%). ES/MS m/z: 299.6 (M+H), 297.7 (M−H); 1H NMR (MeOD, 500 MHz): 7.18 (m, 2H), 6.71 (m, 2H), 3.98 (s, 3H), 3.74 (s, 2H), 2.20 (s, 3H) and 1.87 (s, 3H).

Provenance & Evidence