Triethylamine → HCID 22050227, compound

Participants

Reaction Conditions

Reaction Steps

To a chilled solution of 1-[(4-amino-2-methylpyrimidin-5-yl)methyl]-3-chloro-4-[(2,4-difluorobenzyl)oxy]-6-methylpyridin-2(1H)-one trifluoroacetate (0.200 g, 0.38 mmol) in DMF (20 mL) and a catalytic amount of DMAP was added triethylamine (0.064 mL, 0.38 mmol). The reaction stirred at −20° C. and acetoxyacetyl chloride (0.082 mL, 0.76 mmol) was added. The reaction stirred cold for 15 minutes and then allowed to warm up to room temperature for 3 hours. The reaction was monitored by LR-ESMS m/z=466. The reaction was incomplete after 3 hours. Added acetoxyacetyl chloride (0.05 mL, 0.466 mmol), and triethylamine (0.2 mL, 1.43 mmol) to the reaction mixture and continued to stir overnight at room temperature. The next morning the reaction heated at 65° C. for 3 hours. The solvent was removed in vacuo and 1N LiOH (2.5 mL) was added to the residue. The reaction was heated at 60° C. for 5 hours. The reaction was diluted with acetonitrile and water (1:1) and purified by reverse phase HPLC in 10-90% CH3CN/water (30 minute gradient) at a flow rate of 50 mL/min. The appropriate fractions were freeze dried to afford the desired product (0.020 g, 9%). 1H NMR (CD3OD, 400 MHz) δ 8.04 (s, 1H), 7.6 (m, 1H), 7.02 (m, 1H), 6.59 (s, 1H), 5.30 (s, 2H), 5.24 (s, 2H), 4.26 (s, 1H), 2.60 (s, 3H), 2.43 (s, 3H); ES-HRMS m/z 465.1161 (M+H calculated for C21H20N4O4F2Cl requires 465.1136).

Provenance & Evidence