Dimethylformamide dimethyl acetal → HCID 178496951、化合物
反応式
[NH2:1][C:2]1[C:3]([C:14]([O:16][CH3:17])=[O:15])=[CH:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[C:7]([O:12][CH3:13])[CH:6]=2.CO[CH:20](OC)[N:21]([CH3:23])[CH3:22]>>[CH3:20][N:21](/[CH:23]=[N:1]/[C:2]1[C:3]([C:14]([O:16][CH3:17])=[O:15])=[CH:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[C:7]([O:12][CH3:13])[CH:6]=2)[CH3:22]参加物
3
実験手順
A suspension of 1.2 g (5.2 mmol) of methyl 3-amino-7-methoxy-2-naphthoate in 30 mL of dimethylformamide dimethylacetal is refluxed for 2.5 hours. The mixture is cooled to room temperature. The resulting precipitate is collected by filtration and washed with ether. After drying in vacuo, this yields 1.28 g (85.9%) of methyl 3-{[(E)-(dimethylamino)methylidene]amino}-7-methoxy-2-naphthoate as a light yellow solid, mp 160-162° C.
後処理
- temperatureis refluxed for 2.5 hours
- filtrationThe resulting precipitate is collected by filtration
- washwashed with ether
- customAfter drying in vacuo