Trityl chloride → HCID 86647616, compound

HRID 2068772Notes

Reaction equation

HRID 2068772 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH:22]=[C:23]([F:25])[CH:24]=1)[CH2:5][C:6]1[CH:7]=[C:8]2[C:12](=[CH:13][CH:14]=1)[NH:11][N:10]=[C:9]2[NH:15][C:16](=[O:21])[C:17]([F:20])([F:19])[F:18].[C:26](Cl)([C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)([C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1.N12CCCN=C1CCCCC2>ClCCl>[F:1][C:2]1[CH:3]=[C:4]([CH:22]=[C:23]([F:25])[CH:24]=1)[CH2:5][C:6]1[CH:7]=[C:8]2[C:12](=[CH:13][CH:14]=1)[N:11]([C:26]([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)([C:39]1[CH:40]=[CH:41][CH:42]=[CH:43][CH:44]=1)[C:33]1[CH:34]=[CH:35][CH:36]=[CH:37][CH:38]=1)[N:10]=[C:9]2[NH:15][C:16](=[O:21])[C:17]([F:20])([F:19])[F:18]

Participants

5

Reactant 3

HCID 6456Trityl chlorideHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 86647615HCID 86647615, compound

Product 1

HCID 86647616HCID 86647616, compoundYield 40%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

Crude N-[5-(3,5-difluoro-benzyl)-1H-indazol-3-yl]-2,2,2-trifluoro-acetamide was suspended in dichloromethane (25 mL) and treated with trityl chloride (0.72 g, 2.58 mmol) under stirring. The suspension was cooled to 0° C. and neat 1,8-diazabicyclo[5.4.0]undec-7-ene (0.42 mL, 2.78 mmol) was added, producing immediate solubilization. After stirring at 0° C. for 3 hours the reaction mixture was poured into 50 mL of ice containing 1N HCl (5 mL) and extracted with dichloromethane. The organic layer was washed with NaHCO3, brine, dried and concentrated to a crude material that was purified by flash chromatography (eluant: DCM). The desired product was obtained as a white solid (450 mg, yield 40% over two steps)

Workup

  1. customproducing immediate solubilization
  2. stirringAfter stirring at 0° C. for 3 hours the reaction mixture
  3. extractionextracted with dichloromethane
  4. washThe organic layer was washed with NaHCO3, brine
  5. customdried
  6. concentrationconcentrated to a crude material that
  7. customwas purified by flash chromatography (eluant: DCM)

Sources & evidence

ORD record
ord-b03cb2babe9d4925bcd0d06c01dc3570
Source dataset
uspto-grants-2012_10
Patent number
US08299057B2

Reaction notes

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