Hydroxyamine hydrochloride → HCID 73796369, compound

HRID 1579382Notes

Reaction equation

HRID 1579382 reaction equation
Cl.[NH2:2][OH:3].[O:4]=[C:5]1[C:14]2[C:9](=[N:10][CH:11]=[CH:12][CH:13]=2)[O:8][C:7]2[CH:15]=[CH:16][C:17]([CH:19]=O)=[CH:18][C:6]1=2>N1C=CC=CC=1>[O:4]=[C:5]1[C:14]2[C:9](=[N:10][CH:11]=[CH:12][CH:13]=2)[O:8][C:7]2[CH:15]=[CH:16][C:17]([CH:19]=[N:2][OH:3])=[CH:18][C:6]1=2

Participants

4

Reactant 2

HCID 443297Hydroxyamine hydrochlorideHCID 12898475HCID 12898475, compound

Product 1

HCID 73796369HCID 73796369, compound

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Conditions

Temperature
80 °C

Procedure

11 g of hydroxylamine hydrochloride is added to a suspension of 30 g of 5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-7-carbaldehyde in 600 ml of pyridine, and the mixture is vigorously stirred at 80°C for 1 hour. After cooling, the crystals are filtered off, washed with water, and dried to give crude 5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-7-carbaldehyde oxime melting at 254°-256°C with decomposition.

Workup

  1. temperatureAfter cooling
  2. filtrationthe crystals are filtered off
  3. washwashed with water
  4. customdried

Sources & evidence

ORD record
ord-cadf2fd92c4b40f28adbe374093f1ea2
Source dataset
uspto-grants-1976_01
Patent number
US03931199

Reaction notes

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