Maleic Anhydride → 5,6-Dimethyl-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione
反応式
[CH3:1][C:2]([C:4]([CH3:6])=[CH2:5])=[CH2:3].[C:7]1(=[O:13])[O:12][C:10](=[O:11])[CH:9]=[CH:8]1>C1C=CC=CC=1>[CH3:3][C:2]1[CH2:1][CH:8]2[C:7](=[O:13])[O:12][C:10](=[O:11])[CH:9]2[CH2:5][C:4]=1[CH3:6]参加物
4
実験手順
A mixture of 2,3-dimethyl-1,3-butadiene (10 g; 0.122 mol), maleic anhydride (11.9 g; 0.122 mol) and benzene (30 ml) was stirred at room temperature for 10 hours, followed by removal of insoluble materials by filtration. The filtrate was concentrated under reduced pressure to give the objective compound (18.66 g). Yield, 86.6%. M.P., 73°-74° C.
後処理
- customfollowed by removal of insoluble materials by filtration
- concentrationThe filtrate was concentrated under reduced pressure
出典と根拠
- ORDレコード
- ord-e06c0e891ea84e64bc5990e652bd98a4
- 出典データセット
- uspto-grants-1988_05
- 特許番号
- US04745117
反応ノート
読み込み中…