Water → HCID 67231452, compound

Participants

Reaction Steps

A solution of the compound (0.31 g) obtained in Example 419 and 1-(methylsulfonyl)piperazine (0.14 g) in 1-methyl-2-pyrrolidone (5 mL) was stirred at 110° C. for 24 hr and at 135° C. for 14 hr. The reaction mixture was poured into water, and extracted twice with ethyl acetate. The extract was washed with saturated aqueous ammonium chloride solution and saturated brine, dried and concentrated. The residue was purified by silica gel column chromatography (solvent gradient; 75→100% ethyl acetate/hexane) to give the title compound (0.16 g, 48%) as a pale-yellow powder.

Provenance & Evidence