indium(III)chloride → HCID 57855969, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of indium trichloride (2.0 g) in dry THF (5 mL) under an argon atmosphere is cooled to −78° C. and then treated drop wise with methyl magnesium chloride (9.1 mL, 3 M in THF). The milky suspension is allowed to warm to room temperature and then added drop wise to a refluxing solution of bis(triphenylphosphine)palladium(II)chloride (0.19 g) and 6-nitro-5-trifluoromethanesulfonyloxy-2-trifluoromethyl-quinoline-7-carboxylic acid methyl ester (4.05 g) in dry THF (35 mL). The mixture is refluxed under an argon atmosphere, monitoring by TLC. After reaction completion, the reaction mixture is concentrated in vacuum. The residue is taken up in diethyl ether and washed successively with diluted hydrochloric acid and brine. The diethyl ether phase is dried over anhydrous sodium sulfate, filtered and concentrated in vacuum. The residue is purified by column chromatography (hexane/ethyl acetate=4:1) to give 2.0 g of the title compound of the formula

Provenance & Evidence