Hydrochloric Acid → 3-(Benzoyloxy)-2-methyl-4H-pyran-4-one

HRID 1461547Notes

Reaction equation

HRID 1461547 reaction equation
[C:1]([O:9][CH:10]([C:16](=[O:18])[CH3:17])[C:11](=[O:15])[CH:12]=[CH:13]O)(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(O)(=O)CC.C(O)(=O)C(O)=O.Cl.S(=O)(=O)(O)O>C(O)(=O)C.C(O)=O>[C:1]([O:9][C:10]1[C:11](=[O:15])[CH:12]=[CH:13][O:18][C:16]=1[CH3:17])(=[O:8])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

8

Reactant 5

HCID 313Hydrochloric AcidHCID 971Oxalic AcidHCID 1032Propionic AcidHCID 1118Sulfuric AcidHCID 679144844-Benzoyloxy-1-hydroxy-1-hexene-3,5-dione

Product 1

HCID 802553-(Benzoyloxy)-2-methyl-4H-pyran-4-one

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 284Formic AcidSolvent

Procedure

said 4-benzoyloxy-1-hydroxy-1-hexene-3,5-dione is heated in an acid chosen from the group consisting of formic acid, acetic acid, propionic acid, oxalic acid, dilute hydrochloric acid and dilute sulfuric acid to form 3-benzoyloxy-2-methyl-4-pyrone, and,

Workup

  1. temperatureis heated in an acid

Sources & evidence

ORD record
ord-4395d0b8b7544f9f874788bf2dcc2099
Source dataset
uspto-grants-1991_12
Patent number
US05075461

Reaction notes

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