Pyridine → HCID 86761167, compound

Participants

Reaction Steps

Dissolve (S)-(3,5-Bis-trifluoromethyl-benzyl)-(7,9-dimethyl-8-trifluoromethyl-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yl)-(2-methyl-2H-tetrazol-5-yl)-amine (Example 148, Step 2) (0.200 g, 0.353 mmol) in dichloromethane (4 mL), cool the solution down with an ice-water bath. Add pyridine (0.143 mL, 1.77 mmol) followed by chloro-oxo-acetic acid methyl ester (0.162 mL, 1.77 mmol) dropwise. Warm up the reaction to room temperature and stir overnight. Dilute the reaction mixture with more dichloromethane (10 mL), and wash with aqueous NaHCO3 (10 mL). Extract back the aqueous layer with dichloromethane (10 mL). Combine the organic layers, dry over anhydrous sodium sulfate and filter. Remove the solvent under reduced pressure. Chromatograph the residue over silica gel, eluting with ethyl acetate/hexanes (0-30%), to provide the title compound (0.187 g, 81%). MS (ES+): 653 (M+H).

Provenance & Evidence