Imidazole → HCID 67006584, compound

Participants

Reaction Conditions

Reaction Steps

The crude material 4-cyano-N′-((2R,3R)-2-(4-cyano-2-methyl-3-(trifluoromethyl)phenylamino)-3-hydroxybutanoyl)benzohydrazide (800 mg, 1.75 mmol) was added to DMF (40 mL), followed by addition of TBDMS-Cl (1.06 g, 7.00 mmol) and imidazole (954 mg, 14.01 mmol) at 0° C. The solution was allowed to stir at 0° C. for 30 min and then at room temperature for overnight. The reaction was quenched with the addition of 200 mL brine and extract with EtOAc. The resulting crude material was chromatographed to get the desired product (640 mg) 1H NMR (400 MHz, acetone-d6, δ in ppm): 9.62 (br s), 7.93 (d, J=9 Hz, 2H), 7.79 (d, J=9 Hz, 2H), 7.55 (d, J=9 Hz, 1H), 6.98 (d, J=9 Hz, 1H), 5.38 (d, J=9 Hz, 1H), 4.41 (m, 1H), 4.18 (or, 1H), 2.25 (m, 3H), 1.31 (d, J=6 Hz, 3H), 0.77 (s, 9H), 0.03 (s, 6H), 0.00 (s, 3 H).

Provenance & Evidence