Water → HCID 66823762, compound

Participants

Reaction Steps

To a mixture of cesium carbonate (435 mg) and 9-(1H-indol-5-yl)-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazine 2,2-dioxide (200 mg) in DMSO (5 ml) was added 1-(2-bromoethyl)-4-fluorobenzene (136 mg). The mixture was stirred at room temperature for 1 day. Water and EtOAc were added and the extracted organic layer was washed with brine, dried over anhydrous sodium sulfate. Silica-gel was added to the organic layer and the volatiles were removed in vacuo. The mixture supported on silica-gel was purified by column chromatography (silica gel, eluted with MeOH in EtOAc), concentrated and dissolved in THF (dry) (25 mL) and MeOH (25 mL). Then platinum(IV) oxide (46 mg) was added and the mixture was stirred at room temperature under hydrogen overnight. Activated carbon was added and the insoluble solid was removed by filtration through NH-silica gel/Celite pad (eluted with EtOAc). The filtrate was concentrated and the residue was purified by column chromatography (1st: NH silica gel, eluted with MeOH in EtOAc, 2nd: silica gel, eluted with EtOAc) to give the title compound (5.7 mg) as a white solid.

Provenance & Evidence