Iodoethylene → (1RS,2SR,6RS,7SR,8RS)-4-(2,4,6-trimethylphenyl)-8-vinyl-10-oxatricyclo[5.2.1.02,6]decane-3,5-dione

HRID 407860

Reaction equation

[CH3:1][C:2]1[CH:7]=[C:6]([CH3:8])[CH:5]=[C:4]([CH3:9])[C:3]=1[CH:10]1[C:18](=[O:19])[CH:17]2[CH:12]([CH:13]3[O:20][CH:16]2[CH:15]=[CH:14]3)[C:11]1=[O:21].[CH:22](I)=[CH2:23].C([O-])=O.[Na+]>[Cl-].C([N+](CCCC)(CCCC)CCCC)CCC.CN(C)C=O.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH3:1][C:2]1[CH:7]=[C:6]([CH3:8])[CH:5]=[C:4]([CH3:9])[C:3]=1[CH:10]1[C:11](=[O:21])[CH:12]2[CH:17]([CH:16]3[O:20][CH:13]2[CH:14]([CH:22]=[CH2:23])[CH2:15]3)[C:18]1=[O:19]

Participants

Conditions

Temperature: 150 °C

Procedure

A mixture of (1RS,2SR,6RS,7SR)-4-(2,4,6-trimethylphenyl)-10-oxatricyclo[5.2.1.02,6]dec-8-en-3,5-dione (510 mg, 1.8 mmol), vinyl iodide (280 mg, 1.8 mmol), palladium acetate (20 mg, 0.09 mmol), sodium formate (454 mg, 5.4 mmol) and tetrabuylammonium chloride (500 mg, 1.8 mmol) in dry N,N-dimethylformamide (15 ml) are heated at 150° C. for 20 minutes under microwave irradiation. The mixture is cooled to room temperature and partitioned between water and ethyl acetate. The organic extracts are combined, dried over anhydrous magnesium sulfate, filtered and the filtrate is evaporated under reduced pressure. The residue is purified by column chromatography on silica gel to give (1RS,2SR,6RS,7SR,8RS)-4-(2,4,6-trimethylphenyl)-8-vinyl-10-oxatricyclo[5.2.1.02,6]decane-3,5-dione.

Workup

temperatureThe mixture is cooled to room temperature
custompartitioned between water and ethyl acetate
dry with materialdried over anhydrous magnesium sulfate
filtrationfiltered
customthe filtrate is evaporated under reduced pressure
customThe residue is purified by column chromatography on silica gel

Sources & evidence

ORD record: ord-e1d8629c5767441d96d9519e3d5c70bf
Source dataset: uspto-grants-2014_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08754242B2

Linked notes

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