Thiazolidinedione → HCID 53250037, compound

Participants

Reaction Conditions

Reaction Steps

Crude 2-chloro-6-methoxypyrimidine-4-carbaldehyde (sad105-058, 76 mg) was dissolved in ethanol (2 mL) and was added to a 10 mL vial containing the thiazolidine-dione (42.8 mg, 0.37 mmol., 1 equiv.) and the 1-(p-tolyl)piperazine (70.8 mg, 0.40 mmol, 1.1 equiv.). The mixture was shaken for 45 h at 80° C. and for 15 h at 90° C. producing a precipitate. LC-MS of the solution showed some product at (M+1=412) and some intermediate at (M+1=430). The desired product crashed out of the solution and the LC-MS of the solution does not reflect well the conversion of the reaction. The yellow solid was filtered using a Pasteur pipette through a pad of glass wool and the solid was rinsed with EtOH (4×0.5 mL). The ethanol filtrate contains some desired product. The solid was re-dissolved in CH2Cl2 and the insoluble solid was filtered off. The filtrate was concentrated under reduced pressure to provide 20 mg of the desired product (Z)-5-((6-methoxy-2-(4-(p-tolyl)piperazin-1-yl)pyrimidin-4-yl)methylene)thiazolidine-2,4-dione (97.3% pure). The insoluble solid was partitioned between saturated NaHCO3 (3 mL) and CH2Cl2 (2×5 mL). The organic layer was dried over Na2SO4 and concentrated under reduced pressure to provide an additional 13.4 mg of the desired product (total 33.4 mg, 150 mg theoretical, 22%). LC-MS m/z: 412 (M+1).

Provenance & Evidence