HCID 69958623, compound → HCID 69960966, compound

HRID 1699207Notes

Reaction equation

HRID 1699207 reaction equation
[Si:1]([O:18][CH2:19][C:20]1[C:25]([CH3:26])=[CH:24][CH:23]=[C:22](/[C:27](/[CH3:50])=[CH:28]\[CH2:29][O:30]C(C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[C:21]=1[CH3:51])([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>C(O)(=O)C>[Si:1]([O:18][CH2:19][C:20]1[C:25]([CH3:26])=[CH:24][CH:23]=[C:22](/[C:27](/[CH3:50])=[CH:28]\[CH2:29][OH:30])[C:21]=1[CH3:51])([C:14]([CH3:16])([CH3:17])[CH3:15])([C:8]1[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

3

Reactant 1

HCID 69958623HCID 69958623, compound

Product 1

HCID 69960966HCID 69960966, compoundYield 28.4%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

A solution of 1-tert-butyldiphenylsilyloxymethyl-2,6-dimethyl-3-((Z)-1-methyl-3-trityloxy-1-propenyl)benzene (500 mg) in acetic acid (5 ml) was heated at 60° C. for 10 hours. The cooled reaction mixture was concentrated in vacuo and ethyl acetate was added thereto. The mixture was washed with aqueous sodium bicarbonate solution, water and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by flash silica gel chromatography eluted with n-hexane-ethyl acetate to give 1-tert-butyldiphenylsilyloxymethyl-2,6-dimethyl-3-((Z)-3-hydroxy-1-methyl-1-propenyl)benzene (92 mg) as colorless oil.

Workup

  1. customThe cooled reaction mixture
  2. concentrationwas concentrated in vacuo and ethyl acetate
  3. additionwas added
  4. washThe mixture was washed with aqueous sodium bicarbonate solution, water and brine
  5. dry with materialdried over magnesium sulfate
  6. customevaporated in vacuo
  7. customThe residue was purified by flash silica gel chromatography
  8. washeluted with n-hexane-ethyl acetate

Sources & evidence

ORD record
ord-7bf5438673414ed18b81f36cee513ef3
Source dataset
uspto-grants-2002_02
Patent number
US06344462B1

Reaction notes

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