2,3-Dimethyl-1,3-butadiene → Dimethyl 4,5-dimethyl-1,4-cyclohexadiene-1,2-dicarboxylate
反応式
[CH3:1][C:2]([C:4]([CH3:6])=[CH2:5])=[CH2:3].[C:7]([C:13]([O:15][CH3:16])=[O:14])#[C:8][C:9]([O:11][CH3:12])=[O:10]>O>[CH3:3][C:2]1[CH2:1][C:7]([C:13]([O:15][CH3:16])=[O:14])=[C:8]([C:9]([O:11][CH3:12])=[O:10])[CH2:5][C:4]=1[CH3:6]参加物
4
実験手順
2,3-dimethylbutadiene (9.84 g, 0.12 mol) and dimethyl acetylenedicarboxylate (14.29, 0.1 mol) were stirred together in water (50 ml) at 60° C. for 24 hours. The emulsion was cooled to room temperature and filtered. The filtered solid was recrystallised from diethyl ether to give the title compound In 78% yield. N.m.r: δH (90 MHz, CDCl3) 3.70 (s,6H), 1.71 ppm (s,6H)
後処理
- filtrationfiltered
- customThe filtered solid was recrystallised from diethyl ether
出典と根拠
- ORDレコード
- ord-d941b562e9e741e18993d315dafbeac5
- 出典データセット
- uspto-grants-1995_11
- 特許番号
- US05464873
反応ノート
読み込み中…