1,1-Dichloroethane → HCID 178437677, compound

Participants

Reaction Steps

To a mixture of 6-ethyl-5-[(trans-4-hydroxycyclohexyl)amino]-3-[(4-piperidin-4-ylphenyl)amino]pyrazine-2-carboxamide (Example 358) (43 mg) and dichloroethane (1 mL), pyridine (0.01 mL) and acetic anhydride (0.01 mL) were added under ice cooling and stirred at room temperature for 20 minutes. After addition of saturated aqueous sodium hydrogen carbonate, the reaction liquid was partitioned using chloroform and saturated aqueous sodium hydrogen carbonate. After drying over anhydrous sodium sulfate, the organic layer was concentrated, and the resulting residue was solidified with ethyl acetate-hexane to give 3-{[4-(1-acetylpiperidin-4-yl)phenyl]amino}-6-ethyl-5-[(trans-4-hydroxycyclohexyl)amino]pyrazine-2-carboxamide (26 mg) as a white solid.

Provenance & Evidence