Imidazole → HCID 19418543, compound

HRID 1648704Notes

Reaction equation

HRID 1648704 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([CH2:7][C:8]2[C:13](=[O:14])[C:12]([CH3:15])=[C:11]([CH3:16])[C:10](=[O:17])[C:9]=2[CH3:18])[CH:2]=1.S(S([O-])=O)([O-])=O.[Na+].[Na+].[C:27]([Si:31](Cl)([C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)([CH3:30])([CH3:29])[CH3:28].N1C=CN=C1>ClCCl.O>[Si:31]([O:17][C:10]1[C:9]([CH3:18])=[C:8]([CH2:7][C:3]2[CH:2]=[N:1][CH:6]=[CH:5][CH:4]=2)[C:13]([OH:14])=[C:12]([CH3:15])[C:11]=1[CH3:16])([C:27]([CH3:30])([CH3:29])[CH3:28])([C:38]1[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=1)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1

Participants

7

Reactant 4

HCID 795ImidazoleHCID 24489Sodium DithioniteHCID 93543CV 6504HCID 94078tert-Butyldiphenylchlorosilane

Product 1

HCID 19418543HCID 19418543, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

6-(3-Pyridylmethyl)-2,3,5-trimethyl-1,4-benzoquinone (241 mg, 1 mmol) was dissolved in dichloromethane (5 ml). The solution was stirred for 1 hour with a solution containing sodium hydrosulfite (400 mg, 2.3 mmol) in water (5 ml). The dichloromethane layer was separated, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was dissolved in dichloromethane (5 ml), and tert-butylchlorodiphenylsilane (550 mg, 2 mmol) was added. Then imidazole (136 mg, 2 mmol) was added under a stream of nitrogen. The reaction mixture was stirred at 43° C. for 16 hours and washed with water (5 ml). The organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure to obtain crude 4-tert-butyldiphenylsilyloxy-6-(3-pyridylmethyl)-2,3,5-trimethylphenol.

Workup

  1. customThe dichloromethane layer was separated
  2. dry with materialdried over anhydrous magnesium sulfate
  3. concentrationconcentrated under reduced pressure
  4. dissolutionThe residue was dissolved in dichloromethane (5 ml)
  5. stirringThe reaction mixture was stirred at 43° C. for 16 hours
  6. washwashed with water (5 ml)
  7. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  8. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-19dbe4e3299249939c4f1197012beea0
Source dataset
uspto-grants-1995_07
Patent number
US05436359

Reaction notes

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