Sulfuric Acid → HCID 21559728, compound

HRID 1578616Notes

Reaction equation

HRID 1578616 reaction equation
[OH:1][C:2]1[CH:15]=[CH:14][C:5]2[C:6](=[O:13])[C:7]([C:11]#[N:12])=[C:8]([CH3:10])[O:9][C:4]=2[CH:3]=1.S(=O)(=O)(O)[OH:17]>>[OH:1][C:2]1[CH:15]=[CH:14][C:5]2[C:6](=[O:13])[C:7]([C:11]([NH2:12])=[O:17])=[C:8]([CH3:10])[O:9][C:4]=2[CH:3]=1

Participants

3

Reactant 2

HCID 1118Sulfuric AcidHCID 21559722HCID 21559722, compound

Product 1

HCID 21559728HCID 21559728, compound

Procedure

A slurry of 1 g of 7-hydroxy-4-oxo-2-methyl-4H-1-benzopyran-3-carbonitrile in 6 ml of conc. sulfuric acid was heated for 3 hours on the steam bath. The mixture was poured onto ice. The solid was filtered and recrystallized from ethanol, mp 289°-290°C.

Workup

  1. additionThe mixture was poured onto ice
  2. filtrationThe solid was filtered
  3. customrecrystallized from ethanol, mp 289°-290°C.

Sources & evidence

ORD record
ord-98f2de8e30a4465e8d967bca5dc21393
Source dataset
uspto-grants-1976_02
Patent number
US03937837

Reaction notes

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