反应详情

2-Hydroxy-3,4-dimethoxy-5-nitro-benzaldehyde (2.44 g), 4-chlorophenyl acetic acid (1.82 g), PhOPOCl2 (1.6 ml) and triethylamine (4.5 ml) in 1,2-dichloroethane (125 ml) were refluxed for 5 hours as described in example 1(a). Yield: 2.40 g.