反应详情

As in Example 134, a solution of (E)-5,5-bis(3-methoxyphenyl)-2,4-pentadienoic acid 4-nitrophenyl ester (32.36 g) and 3-pyridinebutanamine (11.4 g) in tetrahydrofuran (120 mL) Was stirred for 18 hours at room temperature and was worked up in the usual manner. The crude material was purified by HPLC (ethyl acetate) and then triturated with ether-hexane to furnish 29.6 g of (E)-5,5-bis (3-methoxyphenyl)-N-[4-(3-pyridinyl)butyl]-2,4-pentadienamide mp 84°-86° C. Crystallization of the product from ethyl acetate-ether provided 29.0 g of amide, mp 86°-88° C. Anal. Calculated for C28H3N2O3 : C, 75.99; H, 6.83; N, 6.33 Found: C, 75.85; H, 6.84; N, 6.27.

1. customThe crude material was purified by HPLC (ethyl acetate)
2. customtriturated with ether-hexane