Pyridine → HCID 67254175, compound

Participants

Reaction Steps

To a stirred solution of 5-methoxy-4-amino-2-trifluoromethyl-benzoic acid methyl ester (552 mg, 2.22 mmol) in 6.6 mL CH2Cl2 at 0° C. under nitrogen was added pyridine (180 μL, 2.22 mmol) followed p-nitrophenyl chloroformate (448 mg, 2.22 mmol) as a solid. After stirring for 1 hour, the reaction was diluted to 30 mL with CH2Cl2 and washed 2×30 mL with 2N HCl and 1×30 mL with H2O. The organics were dried (MgSO4), filtered and concentrated to the p-nitrophenyl carbamate which was isolated as a white foam (878 mg, 96%). 1H-NMR (400 MHz, CDCl3) δ 8.57 (br s, 1H), 8.30 (d, 2H), 7.77 (br s, 1H), 7.40 (d, 2H), 7.37 (s, 1H), 4.03 (s, 3H), 3.94 (s, 3H).

Provenance & Evidence