反应详情

3-Cyano-7,8-dimethyl-4-hydroxycoumarin monohydrate, m.p. (EtOH -- pet. ether) 255°-6°, (Found; C, 62.04; H, 4.80; N, 6.04. C12H9NO3.H2O requires C, 61.79; H, 4.76; N, 6.01) was prepared from 2,3-dimethylphenol via 3,4-dimethylsalicylic acid (m.p. 192°-3°), 2-acetoxy-3,4-dimethylbenzoic acid (m.p. 42°-4°) and 2- acetoxy-3,4-dimethylbenzoyl chloride by an analogous procedure to that described in Example 10.