HCID 20205086、化合物 → HCID 20205093、化合物
反応式
[OH:1][C:2]1[C:7]2[C:8]([CH3:16])=[C:9]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[O:10][C:6]=2[C:5](C(=O)C)=[CH:4][CH:3]=1.C(C1C=CC2O[C:29]([C:31]([O:33]CC)=[O:32])=C(C)C=2C=1O)(=O)C>>[CH2:14]([O:13][C:11]([C:9]1[O:10][C:6]2[C:5]([O:33][C:31](=[O:32])[CH3:29])=[CH:4][CH:3]=[C:2]([OH:1])[C:7]=2[C:8]=1[CH3:16])=[O:12])[CH3:15]参加物
3
実験手順
Following the procedure of Example 156 but substituting Ethyl 4-hydroxy-7-acetyl-3-methylbenzofuran-2-carboxylate for the compound of Example 155. There is obtained the intermediate Ethyl-7-acetoxy-4-hydroxy-3-methylbenzofuran-2-carboxylate which is hydrolyzed in an aqueous acetic acid solution of hydrochloric acid (6 hours, 100° C.) to give the title compound.
出典と根拠
- ORDレコード
- ord-47bb365ba4ba4cf1b6a6f8588b6b253d
- 出典データセット
- uspto-grants-1987_05
- 特許番号
- US04663347
反応ノート
読み込み中…