Sodium hydride → methyl 2-(4-chlorophenyl)-2-(4-(N-((2-(trimethylsilyl)ethoxy)methyl)methylsulfonamido)-1H-indazol-1-yl)butanoate

HRID 1427232Notes

Reaction equation

HRID 1427232 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([N:15]2[C:23]3[C:18](=[C:19]([NH:24][S:25]([CH3:28])(=[O:27])=[O:26])[CH:20]=[CH:21][CH:22]=3)[CH:17]=[N:16]2)([CH2:13][CH3:14])[C:9]([O:11][CH3:12])=[O:10])=[CH:4][CH:3]=1.[H-].[Na+].Cl[CH2:32][O:33][CH2:34][CH2:35][Si:36]([CH3:39])([CH3:38])[CH3:37]>C1COCC1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([N:15]2[C:23]3[C:18](=[C:19]([N:24]([CH2:32][O:33][CH2:34][CH2:35][Si:36]([CH3:39])([CH3:38])[CH3:37])[S:25]([CH3:28])(=[O:27])=[O:26])[CH:20]=[CH:21][CH:22]=3)[CH:17]=[N:16]2)([CH2:13][CH3:14])[C:9]([O:11][CH3:12])=[O:10])=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 27242712-Chloromethyl 2-(trimethylsilyl)ethyl etherHCID 57524868methyl 2-(4-chlorophenyl)-2-(4-(methylsulfonamido)-1H-indazol-1-yl)butanoate

Product 1

HCID 70565947methyl 2-(4-chlorophenyl)-2-(4-(N-((2-(trimethylsilyl)ethoxy)methyl)methylsulfonamido)-1H-indazol-1-yl)butanoate

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of methyl 2-(4-chlorophenyl)-2-(4-(methylsulfonamido)-1H-indazol-1-yl)butanoate (500 mg, 1.19 mmol) in dry THF (8 mL) was treated by NaH (95 mg, 2.38 mmol, 60% in oil) at 0° C. for 30 min, then was added (2-(chloromethoxy)ethyl)trimethylsilane (295 mg, 1.78 mmol) dropwise. The mixture was stirred at room temperature for 2 h. The solution was quenched with saturated NH4Cl solution, and extracted with ethyl acetate (30 mL). The organic layer was washed with brine, dried over dry sodium sulfate, filtered and evaporated. The residue was purified by silica gel chromatography (PE/EA=6/1) to afford the title compound as a pale yellow solid. LC/MS m/z=551.8 [M+H]+.

Workup

  1. customThe solution was quenched with saturated NH4Cl solution
  2. extractionextracted with ethyl acetate (30 mL)
  3. washThe organic layer was washed with brine
  4. dry with materialdried over dry sodium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by silica gel chromatography (PE/EA=6/1)

Sources & evidence

ORD record
ord-414430b223464a1b9bb05138ecdbb89e
Source dataset
uspto-grants-2015_01
Patent number
US08933113B2

Reaction notes

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