Sodium hydride → N-[6-[2-(5-Bromo-pyrimidin-2-yloxy)-ethoxy]-5-(3-methoxy-phenoxy)-pyrimidin-4-yl]-4-tert-butyl-benzenesulfonamide

HRID 2270

Reaction equation

HRID 2270 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([S:11]([NH:14][C:15]2[C:20]([O:21][C:22]3[CH:27]=[CH:26][CH:25]=[C:24]([O:28][CH3:29])[CH:23]=3)=[C:19]([O:30][CH2:31][CH2:32][OH:33])[N:18]=[CH:17][N:16]=2)(=[O:13])=[O:12])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].[Br:36][C:37]1[CH:38]=[N:39][C:40](Cl)=[N:41][CH:42]=1.[Cl-].[NH4+]>CC(N(C)C)=O>[Br:36][C:37]1[CH:38]=[N:39][C:40]([O:33][CH2:32][CH2:31][O:30][C:19]2[N:18]=[CH:17][N:16]=[C:15]([NH:14][S:11]([C:8]3[CH:9]=[CH:10][C:5]([C:1]([CH3:4])([CH3:2])[CH3:3])=[CH:6][CH:7]=3)(=[O:12])=[O:13])[C:20]=2[O:21][C:22]2[CH:27]=[CH:26][CH:25]=[C:24]([O:28][CH3:29])[CH:23]=2)=[N:41][CH:42]=1

Participants

6

Reactant 4

HCID 24758Sodium hydrideHCID 25517Ammonium ChlorideHCID 122044Ro 46-2005HCID 6066655-Bromo-2-chloropyrimidine

Product 1

HCID 11006709N-[6-[2-(5-Bromo-pyrimidin-2-yloxy)-ethoxy]-5-(3-methoxy-phenoxy)-pyrimidin-4-yl]-4-tert-butyl-benzenesulfonamideYield 84.1%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Procedure

To a solution of 4-tert-butyl-N-{6-(2-hydroxyethoxy)-5-(3-methoxyphenoxy)pyrimidin-4-yl}benzenesulfonamide (250 mg) in dimethylacetamide (5 ml) is added sodium hydride (60% dispersion-type, 64 mg) at room temperature, and the mixture is stirred for 20 minutes. To the reaction solution is added 5-bromo-2-chloropyrimidine (133 mg), and the mixture is stirred at room temperature for 18 hours. The reaction solution is poured into ice-water, and the mixture is neutralized with saturated aqueous ammonium chloride solution and extracted with ethyl acetate. The ethyl acetate layer is washed, dried, and evaporated to remove the solvent. The residue is purified by silica gel column chromatography (solvent; chloroform/methanol=40:1) to give crude crystals, which are recrystallized from ethyl acetate/diisopropyl ether to give N-[-6-{2-(5-bromopyrimidin-2-yloxy)ethoxy}-5-(3-methoxyphenoxy)pyrimidin-4-yl]-4-tert-butylbenzenesulfonamide (280 mg) as crystals.

Workup

  1. stirringthe mixture is stirred at room temperature for 18 hours
  2. extractionextracted with ethyl acetate
  3. washThe ethyl acetate layer is washed
  4. customdried
  5. customevaporated
  6. customto remove the solvent
  7. customThe residue is purified by silica gel column chromatography (solvent; chloroform/methanol=40:1)
  8. customto give crude crystals, which
  9. customare recrystallized from ethyl acetate/diisopropyl ether

Sources & evidence

ORD record
ord-46d9d32e459846fbbd2041dd10adb17e
Source dataset
uspto-grants-1998_03
Patent number
US05728706

Linked notes

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