HCID 73796369、化合物 → 5-Oxo-5H-chromeno[2,3-B]pyridine-7-carbonitrile
反応式
[O:1]=[C:2]1[C:11]2[C:6](=[N:7][CH:8]=[CH:9][CH:10]=2)[O:5][C:4]2[CH:12]=[CH:13][C:14]([CH:16]=[N:17]O)=[CH:15][C:3]1=2>C(OC(=O)C)(=O)C>[O:1]=[C:2]1[C:11]2[C:6](=[N:7][CH:8]=[CH:9][CH:10]=2)[O:5][C:4]2[CH:12]=[CH:13][C:14]([C:16]#[N:17])=[CH:15][C:3]1=2参加物
3
実験手順
A mixture of 25 g of 5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-7-carbaldehyde oxime and 150 ml of acetic anhydride is stirred under reflux for 24 hours. After cooling, the crystals are filtered off, washed with water, dried, and recrystallized from dimethylformamide to give 5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-7-carbonitrile melting at 260°C.
後処理
- temperatureunder reflux for 24 hours
- temperatureAfter cooling
- filtrationthe crystals are filtered off
- washwashed with water
- customdried
- customrecrystallized from dimethylformamide
出典と根拠
- ORDレコード
- ord-0400201aed50485d8dc96749cdd9fc34
- 出典データセット
- uspto-grants-1976_01
- 特許番号
- US03931199
反応ノート
読み込み中…