Dichloromethane → HCID 57941476, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (4S,7R)-2-(2,4-difluoro-phenyl)-7,8,8-trimethyl-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (Intermediate 14; 100 mg, 0.33 mmol), tetrabutylammonium iodide (120 mg, 0.32 mmol) and 4-(chloromethyl)-2-methylthiazole (Maybridge plc, Tintagel, Cornwall, UK; 197 mg, 1.3 mmol) in dimethylformamide (2 mL) was heated at 100° C. overnight. Dichloromethane (50 mL) was added and the solution was washed with 1:1 water/brine (2×25 mL) and the combined aqueous washes were back-extracted with dichloromethane (50 mL). The combined organic extracts were washed with saturated aqueous sodium thiosulfate (50 mL), and brine (50 mL). The solution was dried (magnesium sulfate), filtered, evaporated, and purified by column chromatography, eluting with 50-70% ethyl acetate/petroleum ether, to give (4S,7R)-2-(2,4-difluoro-phenyl)-7,8,8-trimethyl-1-(2-methyl-thiazol-4-ylmethyl)-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (59 mg, 43%) as a light tan solid. APCI(+)-MS (M+H) 416.

Provenance & Evidence