4-Nitrophenol → HCID 14347456, compound

Participants

Reaction Steps

As in Example 115, (2E,4Z)-5-(4-methoxyphenyl)-6-methyl-2,4-heptadienoic acid (3.2 g) and 4-nitrophenol (2.2 g) in 20 mL of dichloromethane was treated with 1,3-dicyclohexylcarbodiimide (2.7 g) and the mixture was stirred at room temperature for 18 hours. After the usual work up. crystallization of the crude product from 2-propanol-hexane yielded 3.55 g of (2E,4Z)-5-(4-methoxyphenyl)-6-methyl-2,4-heptadienoic acid 4-nitrophenyl ester, mp 111.5°-113° C.

Provenance & Evidence