Sulfuric Acid → HCID 14151511, compound

HRID 1580184Notes

Reaction equation

HRID 1580184 reaction equation
[NH2:1][C:2]1[O:3][C:4]2[CH:14]=[CH:13][CH:12]=[CH:11][C:5]=2[C:6](=[O:10])[C:7]=1[C:8]#[N:9].S(=O)(=O)(O)[OH:16]>O>[NH2:1][C:2]1[O:3][C:4]2[CH:14]=[CH:13][CH:12]=[CH:11][C:5]=2[C:6](=[O:10])[C:7]=1[C:8]([NH2:9])=[O:16]

Participants

4

Reactant 2

HCID 1118Sulfuric AcidHCID 123420572-Amino-4-oxo-4H-1-benzopyran-3-carbonitrile

Product 1

HCID 14151511HCID 14151511, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

-- A mixture of 1.5 g of 2-amino-4-oxo-4H-1-benzopyran-3-carbonitrile and 7 ml of 80% sulfuric acid is heated for 1 hour on the steam bath. The mixture is cooled, poured into water, and the solid filtered and recrystallized from ethanol, mp 264°-6°C.

Workup

  1. temperatureis heated for 1 hour on the steam bath
  2. temperatureThe mixture is cooled
  3. filtrationthe solid filtered
  4. customrecrystallized from ethanol, mp 264°-6°C.

Sources & evidence

ORD record
ord-1b00eab4ea134e77bfb31034d824897a
Source dataset
uspto-grants-1976_01
Patent number
US03932466

Reaction notes

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