Imidazole → HCID 131719101, compound

HRID 1757211Notes

Reaction equation

[CH2:1]([C:3]1[C:11]([CH3:12])=[C:10]2[C:6]([C:7](=[O:13])[O:8][CH2:9]2)=[C:5]([OH:14])[C:4]=1[CH2:15]/[CH:16]=[C:17](\[CH3:24])/[CH2:18][CH2:19][C:20]([O:22][CH3:23])=[O:21])[CH3:2].N1C=CN=C1.[Si:30](Cl)([C:33]([CH3:36])([CH3:35])[CH3:34])([CH3:32])[CH3:31]>CN(C)C=O>[Si:30]([O:14][C:5]1[C:4]([CH2:15]/[CH:16]=[C:17](\[CH3:24])/[CH2:18][CH2:19][C:20]([O:22][CH3:23])=[O:21])=[C:3]([CH2:1][CH3:2])[C:11]([CH3:12])=[C:10]2[C:6]=1[C:7](=[O:13])[O:8][CH2:9]2)([C:33]([CH3:36])([CH3:35])[CH3:34])([CH3:32])[CH3:31]

Participants

Conditions

Temperature: 25 °C

Procedure

A solution of methyl (E)-6-(1,3-dihydro-6-ethyl-4-hydroxy-7-methyl-3-oxoisobenzofuran-5-yl)-4-methyl-4-hexenoate (8.61 g) and imidazole (3.5 g) in dimethyl formamide (40 ml) was treated with t-butyldimethylsilyl chloride (4.50 g) and stirred at 25° C. for 14 hours. The reaction mixture was then poured into ice water and extracted with ether. Drying over magnesium sulfate and evaporation gave methyl (E)-6-(4-t-butyldimethylsilyloxy-1,3-dihydro-6-ethyl-7-methyl-3-oxoisobenzofuran-5-yl)-4-methyl-4-hexenoate.

Workup

extractionextracted with ether
dry with materialDrying over magnesium sulfate and evaporation

Sources & evidence

ORD record: ord-2302aed7030b4f71b136064000fa24ba
Source dataset: uspto-grants-1995_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05444072

Reaction notes

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