Imidazole → 2-{6,6-dimethyl-1-[2-(trimethylsilyl)ethoxymethyl]-4,5,6,7-tetrahydro-1H-indazol-3-yl}-1-[2-(trimethylsilyl)ethoxymethyl]-1H-indole-6-carboxylic acid [2-(tert-butyldiphenylsilyloxy)-1-methylethyl]amide

HRID 2068892Notes

Reaction equation

HRID 2068892 reaction equation
[OH:1][CH2:2][CH:3]([NH:5][C:6]([C:8]1[CH:16]=[C:15]2[C:11]([CH:12]=[C:13]([C:25]3[C:33]4[CH2:32][CH2:31][C:30]([CH3:35])([CH3:34])[CH2:29][C:28]=4[N:27]([CH2:36][O:37][CH2:38][CH2:39][Si:40]([CH3:43])([CH3:42])[CH3:41])[N:26]=3)[N:14]2[CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])=[CH:10][CH:9]=1)=[O:7])[CH3:4].N1C=CN=C1.[Si:49](Cl)([C:62]([CH3:65])([CH3:64])[CH3:63])([C:56]1[CH:61]=[CH:60][CH:59]=[CH:58][CH:57]=1)[C:50]1[CH:55]=[CH:54][CH:53]=[CH:52][CH:51]=1.O>CN(C)C=O.C(OCC)(=O)C>[Si:49]([O:1][CH2:2][CH:3]([NH:5][C:6]([C:8]1[CH:16]=[C:15]2[C:11]([CH:12]=[C:13]([C:25]3[C:33]4[CH2:32][CH2:31][C:30]([CH3:35])([CH3:34])[CH2:29][C:28]=4[N:27]([CH2:36][O:37][CH2:38][CH2:39][Si:40]([CH3:43])([CH3:41])[CH3:42])[N:26]=3)[N:14]2[CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])=[CH:10][CH:9]=1)=[O:7])[CH3:4])([C:62]([CH3:65])([CH3:64])[CH3:63])([C:56]1[CH:57]=[CH:58][CH:59]=[CH:60][CH:61]=1)[C:50]1[CH:55]=[CH:54][CH:53]=[CH:52][CH:51]=1

Participants

7

Reactant 4

HCID 795ImidazoleHCID 962WaterHCID 94078tert-ButyldiphenylchlorosilaneHCID 585501082-{6,6-dimethyl-1-[2-(trimethylsilyl)ethoxymethyl]-4,5,6,7-tetrahydro-1H-indazol-3-yl}-1-[2-(trimethylsilyl)ethoxymethyl]-1H-indole-6-carboxylic acid (2-hydroxy-1-methylethyl)amide

Product 1

HCID 585502672-{6,6-dimethyl-1-[2-(trimethylsilyl)ethoxymethyl]-4,5,6,7-tetrahydro-1H-indazol-3-yl}-1-[2-(trimethylsilyl)ethoxymethyl]-1H-indole-6-carboxylic acid [2-(tert-butyldiphenylsilyloxy)-1-methylethyl]amideYield 93.8%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 2-{6,6-dimethyl-1-[2-(trimethylsilyl)ethoxymethyl]-4,5,6,7-tetrahydro-1H-indazol-3-yl}-1-[2-(trimethylsilyl)ethoxymethyl]-1H-indole-6-carboxylic acid (2-hydroxy-1-methylethyl)amide (265 mg, 0.42 mmol) in N,N-dimethylformamide (2.7 ml) were added imidazole (35 mg, 0.51 mmol) and tert-butyldiphenylsilyl chloride (132 μl, 0.51 mmol) under ice-cooling, and the mixture was stirred at room temperature for 8 hr. Then, to the reaction mixture were added water and ethyl acetate, and the organic layer was separated. Then, the organic layer was washed successively with water and saturated brine, and dried over sodium sulfate. Sodium sulfate was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel chromatography to give the title compound (341 mg, yield 93%).

Workup

  1. temperaturecooling
  2. customthe organic layer was separated
  3. washThen, the organic layer was washed successively with water and saturated brine
  4. dry with materialdried over sodium sulfate
  5. customSodium sulfate was removed by filtration
  6. concentrationthe filtrate was concentrated under reduced pressure
  7. customThe residue was purified by silica gel chromatography

Sources & evidence

ORD record
ord-e05c48dd98714c78b767fe4bf8752044
Source dataset
uspto-grants-2012_10
Patent number
US08299070B2

Reaction notes

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