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

HRID 1757209Notes

Reaction equation

HRID 1757209 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-82c25f9d57974c328d2ac814ea65fc97
Source dataset
uspto-grants-1995_08
Patent number
US05444072

Reaction notes

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