Probucol → Methyl 4-[4-[[1-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]thio]-1-methylethyl]thio]-2,6-bis(1,1-dimethylethyl)phenoxy]butyrate

HRID 434108

Reaction equation

HRID 434108 reaction equation
[CH3:1][C:2]([C:5]1[CH:6]=[C:7]([S:16][C:17]([S:20][C:21]2[CH:26]=[C:25]([C:27]([CH3:30])([CH3:29])[CH3:28])[C:24]([OH:31])=[C:23]([C:32]([CH3:35])([CH3:34])[CH3:33])[CH:22]=2)([CH3:19])[CH3:18])[CH:8]=[C:9]([C:12]([CH3:15])([CH3:14])[CH3:13])[C:10]=1[OH:11])([CH3:4])[CH3:3].Cl[CH2:37][CH2:38][CH2:39][C:40]([O:42][CH3:43])=[O:41].[F-].[K+]>CN(C=O)C>[CH3:4][C:2]([C:5]1[CH:6]=[C:7]([S:16][C:17]([S:20][C:21]2[CH:22]=[C:23]([C:32]([CH3:35])([CH3:34])[CH3:33])[C:24]([O:31][CH2:37][CH2:38][CH2:39][C:40]([O:42][CH3:43])=[O:41])=[C:25]([C:27]([CH3:30])([CH3:29])[CH3:28])[CH:26]=2)([CH3:18])[CH3:19])[CH:8]=[C:9]([C:12]([CH3:13])([CH3:14])[CH3:15])[C:10]=1[OH:11])([CH3:1])[CH3:3]

Participants

5

Reactant 3

HCID 4912ProbucolHCID 76612Butanoic acid, 4-chloro-, methyl esterHCID 522689Potassium Fluoride

Product 1

HCID 18756961Methyl 4-[4-[[1-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]thio]-1-methylethyl]thio]-2,6-bis(1,1-dimethylethyl)phenoxy]butyrateYield 16.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Probucol (5, 9.69 mmol) and methyl 4-chlorobutyrate (3.1 g. 1.4 eq) were stirred in DMF (15 mL) and potassium fluoride on alumina (7 g, 5 eq) was added. The mixture was stirred at room temperature under nitrogen for 20.5 hours. It was filtered, diluted with ethyl acetate (100 mL), washed with water and brine, dried over sodium sulfate, and evaporated. Chromatography (MPLC, 10% to 80% of dichloromethane in hexanes) gave 0.98 g of methyl 4-[4-[[1-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]thio]-1-methylethyl]thio]-2,6-bis(1,1-dimethylethyl)phenoxy]butyrate.

Workup

  1. filtrationIt was filtered
  2. additiondiluted with ethyl acetate (100 mL)
  3. washwashed with water and brine
  4. dry with materialdried over sodium sulfate
  5. customevaporated

Sources & evidence

ORD record
ord-c859c6d41db8439b99d062f21b4929e4
Source dataset
uspto-grants-2003_12
Patent number
US06670398B2

Linked notes

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