20771-96-4 → 8-Methyl-1-oxo-1H-2-benzopyran-3-carboxylic acid

HRID 259254Notes

Reaction equation

HRID 259254 reaction equation
[C:1]([C:4]1[C:11]([CH3:12])=[CH:10][CH:9]=[CH:8][C:5]=1[CH:6]=O)([OH:3])=[O:2]>C(O)C.O>[CH3:12][C:11]1[CH:10]=[CH:9][CH:8]=[C:5]2[C:4]=1[C:1](=[O:2])[O:3][C:4]([C:1]([OH:3])=[O:2])=[CH:6]2

Participants

3

Reactant 1

HCID 2151859420771-96-4

Product 1

HCID 214236768-Methyl-1-oxo-1H-2-benzopyran-3-carboxylic acid

Reagents, catalysts & solvents 1

HCID 19096565Water ethanolSolvent

Procedure

8- Methylisocoumarin -3- carboxylic acid, mp. (EtOH-H2O) 236°-7°, (Found: C, 64.66; H, 3.95. C11H8O4 requires C, 64.70; H, 3.95), was prepared from 2 -carboxy -3- methylbenzaldehyde by an analogous procedure to that described in Example 1.

Sources & evidence

ORD record
ord-c81ddb893be643b98d1154fd55cea6d5
Source dataset
uspto-grants-1977_07
Patent number
US04036964

Reaction notes

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