3a,4,7,7a-Tetrahydro-5-methyl-1,3-isobenzofurandione → 4-Methylphthalic anhydride

HRID 638355Notes

Reaction equation

HRID 638355 reaction equation
[CH3:1][C:2]1[CH2:3][CH:4]2[C:9](=[O:10])[O:8][C:6](=[O:7])[CH:5]2[CH2:11][CH:12]=1.[S]>[O-2].[Zn+2]>[CH3:1][C:2]1[CH:3]=[C:4]2[C:9](=[O:10])[O:8][C:6](=[O:7])[C:5]2=[CH:11][CH:12]=1

Participants

4

Reactant 2

HCID 984963a,4,7,7a-Tetrahydro-5-methyl-1,3-isobenzofurandioneHCID 5362487Sulfur

Product 1

HCID 880694-Methylphthalic anhydride

Reagents, catalysts & solvents 1

HCID 3007857Zinc OxideCatalyst

Procedure

reacting the 4-methyl-1,2,3,6-tetrahydrophthalic anhydride with sulfur in the presence of zinc oxide and 2-mercaptobenzothizole as a catalyst to form 4-methylphthalic anhydride and a thio derivative;

Sources & evidence

ORD record
ord-cc26ff2eb4654056b73188bbfb839f2a
Source dataset
uspto-grants-1985_12
Patent number
US04560772

Reaction notes

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