反応式
[N+:1]([C:4]1[CH:5]=[CH:6][C:7]2[O:11][C:10](=[O:12])[CH2:9][C:8]=2[CH:13]=1)([O-:3])=[O:2].[C:14](O)(=[O:19])[CH2:15][CH2:16][CH2:17][CH3:18].C(OC(=O)CCCC)(=O)CCCC>>[OH:19][C:14](=[C:9]1[C:8]2[CH:13]=[C:4]([N+:1]([O-:3])=[O:2])[CH:5]=[CH:6][C:7]=2[O:11][C:10]1=[O:12])[CH2:15][CH2:16][CH2:17][CH3:18]参加物
4
実験手順
In a further process disclosed in EP-A 1 116 719, 5-nitro-2(3H)-benzofuranone is reacted in the presence of pentanoic acid and pentanoic anhydride to give 3-(1-hydroxypentylidene)-5-nitro-2(3H)-benzofuranone which reacts under acidic conditions to give 2-(n-butyl)-5-nitrobenzofuran. The disadvantage of this process is that 5-nitro-2(3H)-benzofuranone is used as precursor, which makes industrial application uneconomic.
出典と根拠
- ORDレコード
- ord-ec068ed8034e4501891682a611dd84de
- 出典データセット
- uspto-grants-2006_01
- 特許番号
- US06984741B2
関連ノート
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