Ethyl Acetate → HCID 58679085, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl (E)-5-[2-(2,4-bisbenzyloxyphenyl)vinyl]-4-nitrothiophene-2-carboxylate (3.08 g, 6.13 mmol) in mesitylene (15 ml) was added triethyl phosphite (3.15 ml, 18.4 mmol), and the mixture was stirred at 160° C. for 43 hr. The reaction mixture was allowed to cool to room temperature, and ethyl acetate (50 ml) was added. The organic layer was washed successively with 1N hydrochloric acid (30 ml), water (30 ml×2) and saturated brine (20 ml), and dried over sodium sulfate. After filtration and concentration, isopropyl alcohol (20 ml) was added to the obtained residue and the precipitated solid was collected by filtration. The solid was washed with isopropyl alcohol (10 ml×3) to give methyl 5-(2,4-bisbenzyloxyphenyl)-4H-thieno[3,2-b]pyrrole-2-carboxylate (1.36 g, yield 47%).

Provenance & Evidence