反应详情

This compound was prepared in a similar fashion as that described in Example 2, General Procedure IV but using 2-amino-5-nitroanisole and trifluoroacetaldehyde hydrate in place of Compound 200 and propionaldehyde. Compound 465 was isolated as a light brown crystalline solid after recrystallization (1:1 EtOAc:hexanes, 30 mL): Rf 0.52 (2:1 hexanes:EtOAc); 1H NMR (400 MHz, acetone-d6) 7.87 (dd, J=8.9, 2.4, 1H), 7.69 (d, J=2.4, 1H), 6.96 (d, J=8.9, 1H), 6.38 (broad s, 1H), 4.20 (qd, J=9.3, 7.1, 2H), 4.00 (s, 3H).

1. customThis compound was prepared in a similar fashion as