Toluene → 5-(3,5-Dimethylphenylthio)-4-isopropyl-1-[2-(1-methoxycyclopentyloxy)ethoxymethyl]-2-methyl-1H-imidazole

HRID 1005503

Reaction equation

HRID 1005503 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([S:9][C:10]2[N:14]([CH2:15][O:16][CH2:17][CH2:18][OH:19])[C:13]([CH3:20])=[N:12][C:11]=2[CH:21]([CH3:23])[CH3:22])[CH:5]=[C:6]([CH3:8])[CH:7]=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1.C1(C)C=CC=CC=1.[CH3:43][O:44][C:45]1(OC)[CH2:49][CH2:48][CH2:47][CH2:46]1>C(Cl)Cl.C(N(CC)CC)C>[CH3:8][C:6]1[CH:5]=[C:4]([S:9][C:10]2[N:14]([CH2:15][O:16][CH2:17][CH2:18][O:19][C:45]3([O:44][CH3:43])[CH2:49][CH2:48][CH2:47][CH2:46]3)[C:13]([CH3:20])=[N:12][C:11]=2[CH:21]([CH3:23])[CH3:22])[CH:3]=[C:2]([CH3:1])[CH:7]=1

Participants

7

Reactant 4

HCID 1140TolueneHCID 4781802-[5-(3,5-Dimethyl-phenylsulfanyl)-4-isopropyl-2-methyl-imidazol-1-ylmethoxy]-ethanolHCID 521998p-Toluenesulfonic acid monohydrateHCID 5230521,1-Dimethoxy-cyclopentane

Product 1

HCID 158871845-(3,5-Dimethylphenylthio)-4-isopropyl-1-[2-(1-methoxycyclopentyloxy)ethoxymethyl]-2-methyl-1H-imidazoleYield 73.2%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8471TriethylamineSolvent

Procedure

A solution of 5-(3,5-dimethylphenylthio)-4-isopropyl-1-(2-hydroxyethoxymethyl)-2-methyl-1H-imidazole (1) (301 mg, 0.9 mmol) prepared in accordance with the method as described in WO 96/10019 and p-toluenesulfonic acid hydrate (180 mg, 0.945 mmol) in a mixture of methylene chloride (5 mL) - toluene (1 mL) was concentrated under reduced pressure. The obtained residue was dissolved in methylene chloride (9 mL), to which was added 1,1-dimethoxycyclopentane (1.17 g, 9.00 mmol), and the mixture was stirred for 3 hours. Triethylamine (0.19 mL) was added to the reaction mixture, and the mixture was concentrated under reduced pressure. The residue was purified by chromatography on an alumina column (eluate: hexane - ethyl acetate (2:1)) to give the compound 2 (285 mg, 73 %) as oil. Rf 0.45 (Al2O3 60, Type E, 2:1 hexane -EtOAc).

Workup

  1. concentrationwas concentrated under reduced pressure
  2. dissolutionThe obtained residue was dissolved in methylene chloride (9 mL), to which
  3. concentrationthe mixture was concentrated under reduced pressure
  4. customThe residue was purified by chromatography on an alumina column (eluate: hexane - ethyl acetate (2:1))

Sources & evidence

ORD record
ord-1f6688f008bf4fcc9f79d4cef457f625
Source dataset
uspto-grants-2000_04
Patent number
US06054591

Linked notes

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