Dichloromethane → HCID 117812396、化合物

In a 40 ml scintillation vial equipped with a magnetic stir bar and fitted with a nitrogen inlet, the 7-amino-2-(3-dimethylaminomethyl-benzyl)-6-(4-o-tolyl-piperazin-1-yl)-3,4-dihydro-2H-isoquinolin-1-one 11b (73.70 mg, 0.15 mmol) was taken up in clean, dry, reagent-grade dichloromethane (3.00 ml, 46.52 mmol) and the mixture was stirred at room temperature under nitrogen atmosphere until the solids were all in solution. To this stirred solution was then added the N,N-diisopropylethylamine (0.08 ml, 0.46 mmol) followed by the furan-2-carbonyl chloride (0.02 ml, 0.20 mmol) and the reaction was allowed to stir overnight. The reaction was quenched with 3 ml of 2N HCl. The product solution was diluted with 10 ml of water and 10 ml of dichloromethane. The layers were separated and the product was extracted using dichloromethane (3×10 ml). The organic phases were combined and washed with brine (1×25 ml) and the product solution was then dried over MgSO4. The solution was then filtered under vacuum and the collected solution was concentrated under reduced pressure. The resultant yellow oil was then purified using silica gel column chromatography, eluting 100% dichloromethane to 7.5% MeOH in dichloromethane. The product needed further purification and was subjected to reverse-phase HPLC, eluting a gradient of 30% MeOH in water to 100% MeOH over a 5 min period. Furan-2-carboxylic acid [2-(3-dimethylaminomethyl-benzyl)-1-oxo-6-(4-o-tolyl-piperazin-1-yl)-1,2,3,4-tetrahydro-isoquinolin-7-yl]-amide 11c (11.30 mg, 0.02 mmol) was isolated as a white solid.