Imidazole → HCID 11110111, compound

HRID 840825Notes

Reaction equation

HRID 840825 reaction equation
[OH:1][CH2:2][C:3]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:4]=1[CH:5]([S:13][CH3:14])[C:6](=[O:12])[NH:7]2.[Si:15](Cl)([C:18]([CH3:21])([CH3:20])[CH3:19])([CH3:17])[CH3:16].N1C=CN=C1>CN(C=O)C.CCCCCC.CCOC(C)=O>[CH3:14][S:13][CH:5]1[C:4]2[C:8](=[CH:9][CH:10]=[CH:11][C:3]=2[CH2:2][O:1][Si:15]([C:18]([CH3:21])([CH3:20])[CH3:19])([CH3:17])[CH3:16])[NH:7][C:6]1=[O:12]

Participants

7

Reactant 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 21956185HCID 21956185, compound

Product 1

HCID 11110111HCID 11110111, compoundYield 95.1%

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 8058HexaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of 0.82 g (3.9 mmol) of 4-hydroxymethyl-3-methylsulfanyl-1,3-dihydro-indol-2-one in DMF (20 mL) was treated with 0.65 g (4.3 mmol) of t-butyldimethylsilyl chloride and 0.3 g (4.4 mmol) of imidazole and stirred for 24 h. The solution was diluted with 75 mL of hexane and 75 mL of EtOAc. The organic phase was washed with brine, dried over MgSO4 and concentrated to give 1.2 g (95%) of 3-methylsulfanyl-4-(t-butyldimethylsilyloxy)methyl-1,3-dihydro-indol-2-one as a clear oil which crystallised upon storage at rt: 1H NMR (DMSO-d6): δ0.051 (s, 3H), 0.064 (s, 3H), 0.881 (s, 9H), 1.87 (s, 3H), 4.43 (s, 1H), 4.79 (d, J=14.2 Hz, 1H), 4.88 (d, J=14.2 Hz, 1H), 6.70 (d, J=7.9 Hz, 1H), 7.00 (d, J=7.9 Hz, 1H), 7.19 (t, J=7.9 Hz, 1H), 10.48 (s, 1H); APCI−MS m/z 346 (M+23)+.

Workup

  1. washThe organic phase was washed with brine
  2. dry with materialdried over MgSO4
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-444cb09cda134f198a8a6a9067f7b4e1
Source dataset
uspto-grants-2002_04
Patent number
US06369086B1

Reaction notes

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