4-Nitrophenol → HCID 14994112, compound

Participants

Reaction Steps

As in Example 115, (E)-5,5-bis[2-(trifluoromethyl) phenyl]-2,4-pentadienoic acid (1.135 g) and 4-nitrophenol (0.450 g) in dichloromethane (15 mL) was treated with 1,3-dicyclohexylcarbodiimide (0.607 g). The mixture was stirred at 0°-5° C. for 1 hour, then at room temperature for 30 minutes. The usual work up furnished 1.45 g of (E)-5,5-bis[-2-(trifluoromethyl)phenyl]-2,4-pentadienoic acid 4-nitrophenyl ester as an oil essentially homogeneous by tlc. This material was used without further purification in subsequent reactions.

Provenance & Evidence