4-[[5-(3,5-dichloro-phenylsulfanyl)-1-isopropyl-3-methyl-1H-pyrazol-4-yl]-hydroxy-methyl]-pyridine → 4-[[5-(3,5-Dichlorophenyl)sulfanyl-1-isopropyl-3-methyl-pyrazol-4-yl]methyl]pyridine

HRID 47625Notes

Reaction equation

HRID 47625 reaction equation
[P](I)(I)(I)I.[Cl:6][C:7]1[CH:8]=[C:9]([S:14][C:15]2[N:19]([CH:20]([CH3:22])[CH3:21])[N:18]=[C:17]([CH3:23])[C:16]=2[CH:24](O)[C:25]2[CH:30]=[CH:29][N:28]=[CH:27][CH:26]=2)[CH:10]=[C:11]([Cl:13])[CH:12]=1.S(=O)(O)[O-].[Na+]>C1C=CC=CC=1>[Cl:13][C:11]1[CH:10]=[C:9]([S:14][C:15]2[N:19]([CH:20]([CH3:21])[CH3:22])[N:18]=[C:17]([CH3:23])[C:16]=2[CH2:24][C:25]2[CH:26]=[CH:27][N:28]=[CH:29][CH:30]=2)[CH:8]=[C:7]([Cl:6])[CH:12]=1

Participants

5

Reactant 3

HCID 101583444-[[5-(3,5-dichloro-phenylsulfanyl)-1-isopropyl-3-methyl-1H-pyrazol-4-yl]-hydroxy-methyl]-pyridineHCID 23665763Sodium BisulfiteHCID 178506614HCID 178506614, compound

Product 1

HCID 99085114-[[5-(3,5-Dichlorophenyl)sulfanyl-1-isopropyl-3-methyl-pyrazol-4-yl]methyl]pyridineYield 61.9%

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent2×

Conditions

Temperature
80 °C

Procedure

A solution of 466 mg of phosphorus tetraiodide in 15 mL of benzene was heated at 80° C. for 15 minutes. To this solution was added dropwise a solution of 400 mg of 4-[[5-(3,5-dichloro-phenylsulfanyl)-1-isopropyl-3-methyl-1H-pyrazol-4-yl]-hydroxy-methyl]-pyridine in 10 mL of benzene. The mixture was then heated at 80° C. for 1 hour then allowed to cool to room temperature. Then 8 mL of 10% aqueous sodium bisulphite solution was added and the biphasic mixture stirred for 1 hour. The aqueous phase was extracted three times with 30 mL of ethyl acetate and combined extracts were washed with brine, dried, filtered and evaporated to give a yellow residue which was purified by flash chromatography on silica gel using ethyl acetate/hexane (1:1 then 2:1) for the elution to give 238 mg of 4-[5-(3,5-dichloro-phenylsulfanyl)-1-isopropyl-3-methyl-1H-pyrazol-4-ylmethyl]-pyridine as a white solid. Mass spectrum (ES) m/z 392 [M+H]+, 433 [M+H+MeCN]+.

Workup

  1. temperatureto cool to room temperature
  2. extractionThe aqueous phase was extracted three times with 30 mL of ethyl acetate
  3. washwere washed with brine
  4. customdried
  5. filtrationfiltered
  6. customevaporated
  7. customto give a yellow residue which
  8. customwas purified by flash chromatography on silica gel
  9. wash2:1) for the elution

Sources & evidence

ORD record
ord-8cadc6e394c64badb59f552f2ce61f9c
Source dataset
uspto-grants-2004_03
Patent number
US06699887B2

Reaction notes

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