HCID 85853484, compound → HCID 11540739, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-cyano-4-hydroxybenzoic acid pentafluorophenyl ester (compound of Reference Example 63; 0.45 g) and 3-[3-(2,3,5,6-tetramethylbenzyloxy)phenyl]-2-furancarboxylic acid hydrazide (compound of Reference Example 4; 0.50 g) in DMF (5 ml) was stirred at 70° C. overnight. The reaction solution was then diluted with ethyl acetate, washed with 1 M hydrochloric acid and water, and dried over MgSO4. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (eluent: 0%→10% methanol/chloroform gradient) and recrystallized from ethyl acetate, thereby giving 0.31 g of the desired compound. Melting point: 210-211° C.

Provenance & Evidence