Triphenylphosphine → 2-(2-{2-[(2-Tert-butoxy-1,1-dimethyl-2-oxoethyl)thio]-1,3-thiazol-4-yl}ethoxy)-5-iodobenzoic acid methyl ester

HRID 914309Notes

Reaction equation

HRID 914309 reaction equation
[C:1]([O:5][C:6](=[O:19])[C:7]([S:10][C:11]1[S:12][CH:13]=[C:14]([CH2:16][CH2:17][OH:18])[N:15]=1)([CH3:9])[CH3:8])([CH3:4])([CH3:3])[CH3:2].[CH3:20][O:21][C:22](=[O:31])[C:23]1[C:24](=[CH:26][CH:27]=[C:28]([I:30])[CH:29]=1)O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[N+](C(OCC)=O)(C(OCC)=O)=[N-]>O1CCCC1>[CH3:20][O:21][C:22](=[O:31])[C:23]1[CH:29]=[C:28]([I:30])[CH:27]=[CH:26][C:24]=1[O:18][CH2:17][CH2:16][C:14]1[N:15]=[C:11]([S:10][C:7]([CH3:9])([CH3:8])[C:6]([O:5][C:1]([CH3:2])([CH3:4])[CH3:3])=[O:19])[S:12][CH:13]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 248910Methyl 5-IodosalicylateHCID 14357405DiethyldiazodicarboxylateHCID 597593522-{[4-(2-Hydroxyethyl)-1,3-thiazol-2-yl]thio}-2-methylpropionic acid tert-butyl ester

Product 1

HCID 597593132-(2-{2-[(2-Tert-butoxy-1,1-dimethyl-2-oxoethyl)thio]-1,3-thiazol-4-yl}ethoxy)-5-iodobenzoic acid methyl esterYield 96.7%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

2-{[4-(2-Hydroxyethyl)-1,3-thiazol-2-yl]thio}-2-methylpropionic acid tert-butyl ester (8.0 g) synthesized in Example 4 and 5-iodosalicylic acid methyl ester (7.3 g) were dissolved in tetrahydrofuran (130 mL), triphenylphosphine (9.0 g) and diethyl diazodicarboxylate (14.9 g) were added under ice-cooling, and the mixture was stirred at room temperature for 8 hr. The reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel chromatography (elution solvent; hexane:ethyl acetate=10:1 to 5:1) to give the title compound (14.3 g) as a colorless oil.

Workup

  1. temperaturecooling
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. customthe residue was purified by silica gel chromatography (elution solvent; hexane:ethyl acetate=10:1 to 5:1)

Sources & evidence

ORD record
ord-91fe3730dc564afcb0baddef7ff6ab72
Source dataset
uspto-grants-2011_09
Patent number
US08026370B2

Reaction notes

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