HCID 14232131, compound → HCID 14232124, compound

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Reaction Steps

A mixture prepared from a solution of N-(2-chloro-1H-pyrrol-1-yl)-N-(4-pyridinyl)carbamic acid ethyl ester (6 g) in 50 ml of ethanol and 20 ml of 10% aqueous sodium hydroxide solution was warmed for 15 minutes on a steam bath, and thereafter cooled, diluted with 500 ml of water and extracted with dichloromethane. The organic extract was washed with water and saturated sodium chloride solution and thereafter dried over anhydrous magnesium sulfate, filtered and evaporated to 5 g of an oil. This oil was purified by HPLC (silica, ethyl acetate) to give 3.5 g of a solid, m.p. 115°-118° C. This material was converted to the hydrochloride salt and recrystallized twice from isopropanol-ether to give 3.4 g of crystals., m.p. 172°-173° C.

Provenance & Evidence