Methanol → HCID 15480815, compound

Participants

Reaction Steps

To a solution of 6.56 g of nickel chloride hexahydrate and 22.3 ml of methanol in 100 ml of tetrahydrofuran, 2.09 g of sodium borohydride was added portionwise under ice-cooling, and then a suspension of 31.9 g of 2-chloro-3-nitro-4-[2-(N-triphenylmethyl-4-piperidyl)ethylamino]quinoline in 300 ml of tetrahydrofuran was added to the mixture. Successively, 8.35 g of sodium borohydride divided in four portions was added portionwise, and the mixture was stirred at room temperature for 1 hour. The reaction mixture was added with 50 ml of water and an insoluble matter was filtered off, and then the extract was concentrated. The residue was added with water and extracted with ethyl acetate. The extract was washed successively with water and saturated brine, and dried, and then the solvent was evaporated. The resulting pale green liquid was solidified with a mixture of ethyl acetate and diisopropyl ether, and the solid was washed successively with isopropanol and diisopropyl ether to give 20.1 g of pale green crystals. Recrystallization from isopropanol gave pale green crystals having the melting point of from 116 to 121° C.

Provenance & Evidence