Water → methyl (E) 6-(1,3-dihydro-6-formyl-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoate

HRID 1735432Notes

Reaction equation

HRID 1735432 reaction equation
[OH:1][CH2:2][C:3]1[C:11]([CH3:12])=[C:10]2[C:6]([C:7](=[O:13])[O:8][CH2:9]2)=[C:5]([O:14][S:15]([C:18]2[CH:23]=[CH:22][C:21]([CH3:24])=[CH:20][CH:19]=2)(=[O:17])=[O:16])[C:4]=1[CH2:25]/[CH:26]=[C:27](\[CH3:34])/[CH2:28][CH2:29][C:30]([O:32][CH3:33])=[O:31].[Cr](Cl)([O-])(=O)=O.[NH+]1C=CC=CC=1.O>ClCCl>[CH:2]([C:3]1[C:11]([CH3:12])=[C:10]2[C:6]([C:7](=[O:13])[O:8][CH2:9]2)=[C:5]([O:14][S:15]([C:18]2[CH:23]=[CH:22][C:21]([CH3:24])=[CH:20][CH:19]=2)(=[O:17])=[O:16])[C:4]=1[CH2:25]/[CH:26]=[C:27](\[CH3:34])/[CH2:28][CH2:29][C:30]([O:32][CH3:33])=[O:31])=[O:1]

Participants

5

Reactant 3

HCID 962WaterHCID 86748922methyl (E) 6-(1,3-dihydro-6-hydroxymethyl-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoateHCID 178418287HCID 178418287, compound

Product 1

HCID 86748923methyl (E) 6-(1,3-dihydro-6-formyl-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Methyl (E) 6-(1,3-dihydro-6-hydroxymethyl-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoate (0.2 g) is dissolved in dichloromethane (10 ml) and pyridinium chlorochromate (0.15 g) is added. After one hour water (25 ml) is added. The organic solution is dried and evaporated and the residue is chromatographed on silica gel, eluting with hexane:ethyl acetate, to afford methyl (E) 6-(1,3-dihydro-6-formyl-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoate.

Workup

  1. customThe organic solution is dried
  2. customevaporated
  3. customthe residue is chromatographed on silica gel
  4. washeluting with hexane

Sources & evidence

ORD record
ord-a443e28af7c346f2b962ba8b1f7b5764
Source dataset
uspto-grants-1996_07
Patent number
US05536747

Reaction notes

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