Sulfuric Acid → 4-Hydroxy-6-methyl-2-pyrone

HRID 1379270Notes

Reaction equation

HRID 1379270 reaction equation
C([C:4]1[C:5](=[O:12])[O:6][C:7]([CH3:11])=[CH:8][C:9]=1[OH:10])(=O)C.S(=O)(=O)(O)O>>[CH3:11][C:7]1[O:6][C:5](=[O:12])[CH:4]=[C:9]([OH:10])[CH:8]=1

Participants

3

Reactant 2

HCID 1118Sulfuric AcidHCID 546784943-Acetyl-4-hydroxy-6-methyl-2H-pyran-2-one

Product 1

HCID 546757574-Hydroxy-6-methyl-2-pyrone

Procedure

3-Acetyl-6-methyl-4-hydroxypyran-2-one may be deacylated by reaction with 90% sulphuric acid at 130° C. to give 6-methyl-4-hydroxy pyran-2-one;

Sources & evidence

ORD record
ord-d20834b9b55e40f6bf60fdd385cd0b4b
Source dataset
uspto-grants-1997_09
Patent number
US05670662

Reaction notes

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