5,6-Dimethyl-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione → HCID 54268221, compound

HRID 745204Notes

Reaction equation

HRID 745204 reaction equation
[CH3:1][C:2]1[CH2:3][CH:4]2[C:12](=[O:13])[O:11][C:9](=[O:10])[CH:5]2[CH2:6][C:7]=1[CH3:8]>[Pt](=O)=O.O1CCCC1>[CH3:1][CH:2]1[CH:7]([CH3:8])[CH2:6][C:5]2[C:9]([O:11][C:12](=[O:13])[C:4]=2[CH2:3]1)=[O:10]

Participants

4

Reactant 1

HCID 2262975,6-Dimethyl-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione

Product 1

HCID 54268221HCID 54268221, compound

Reagents, catalysts & solvents 2

HCID 345198Adams' catalystCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 4,5-dimethyl-4-cyclohexene-1,2-dicarboxylic anhydride (10 g; 0.0555 mol), platinum dioxide (150 mg) and tetrahydrofuran (100 ml) was hydrogenated at room temperature for 8 hours. Precipitates were removed by filtration, and the filtrate was evaporated under reduced pressure to give 4,5-dimethylcyclohexene-1,2-dicarboxylic anhydride. IR νmaxFilm (cm-1): 1860, 1760.

Workup

  1. customPrecipitates
  2. customwere removed by filtration
  3. customthe filtrate was evaporated under reduced pressure

Sources & evidence

ORD record
ord-3d71c9372df04af1a1a56555ab099c4b
Source dataset
uspto-grants-1986_07
Patent number
US04598078

Reaction notes

Loading…