Water → HCID 59191534, compound

Participants

Reaction Conditions

Reaction Steps

To the solution of 3,4,5,6-tetrahydro-2H-[1,2′]bipyrazinyl-5′-carboxylic acid methyl ester (250 mg, 1.07 mmol) in NMP (5 mL) is added 3,6-dichloro-4,5-dimethyl-pyridazine (237 mg, 1.33 mmol) and TEA (446 μl, 3.21 mmol), the reaction mixture is stirred at 190° C. for 60 min. Water is added to the mixture and extracted with EtOAc. The combined organic layers are washed with water, brine, dried over Na2SO4, filtered and concentrated. The crude product is purified by HPLC, (acetonitrile/water: 10%˜95% with 3% 1-propanol) to give white powder (165 mg, 43%).

Provenance & Evidence