HCID 73796369、化合物 → 5-Oxo-5H-chromeno[2,3-B]pyridine-7-carbonitrile

HRID 1579383ノート

反応式

HRID 1579383 の反応式
[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

  1. temperatureunder reflux for 24 hours
  2. temperatureAfter cooling
  3. filtrationthe crystals are filtered off
  4. washwashed with water
  5. customdried
  6. 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

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