Sodium Hydroxide → HCID 15582862, compound

Participants

Reaction Steps

A mixture of 4.7 g. of N-[4-bromo-3-(1-ethoxycarbonylethyloxy)phenyl]-3,4,5,6-tetrahydrophthalimide, 15 ml. of methanol and 4 ml. of 40% aqueous solution of sodium hydroxide was refluxed with stirring for 1 hour and the solvent was distilled off under a reduced pressure. The residue was mixed with 0.4 g. of cyclohexane-1,2-dicarboxylic anhydride and 20 ml. of glacial acetic acid and the mixture was refluxed with stirring for 3 hours and the reaction mixture was poured into 1 liter of water to precipitate the product. The precipitate was separated by a filtration and washed with water and dried. The residue was purified by a chromatography on a column of silica gel (developing solvent: ethyl acetate:n-hexane of 8:1) to obtain 3.8 g. of Compound No. 10 shown in Table 1.

Provenance & Evidence