Trityl chloride → HCID 22260753, compound

HRID 1983475Notes

Reaction equation

HRID 1983475 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([C:8]2[C:16]3[C:11](=[CH:12][CH:13]=[C:14]([C:17]([O:19][CH3:20])=[O:18])[CH:15]=3)[NH:10][N:9]=2)[CH:5]=[CH:6][CH:7]=1.[H-].[Na+].Cl[C:24]([C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1)([C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1.C(=O)([O-])O.[Na+]>O1CCCC1>[F:1][C:2]1[CH:3]=[C:4]([C:8]2[C:16]3[C:11](=[CH:12][CH:13]=[C:14]([C:17]([O:19][CH3:20])=[O:18])[CH:15]=3)[N:10]([C:24]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)([C:37]3[CH:38]=[CH:39][CH:40]=[CH:41][CH:42]=3)[C:31]3[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=3)[N:9]=2)[CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 6456Trityl chlorideHCID 24758Sodium hydrideHCID 516892Sodium BicarbonateHCID 22260721HCID 22260721, compound

Product 1

HCID 22260753HCID 22260753, compoundYield 75.5%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2.43 g of methyl 3-(3-fluorophenyl)-1H-5-indazolecarboxylate produced in Production Example I-4-e in 25 ml tetrahydrofuran was added 720 mg of 60% sodium hydride (oily), and the mixture was stirred under ice-cooling for 10 minutes. Then, 3.26 g of chlorotriphenylmethane was added and the mixture was stirred at the same temperature for 30 minutes and at room temperature for 1 hour. The reaction mixture was ice-cooled, saturated aqueous sodium hydrogencarbonate solution was added, and the mixture was extracted with 100 ml of ethyl acetate. The organic layer was sequentially washed with water and brine, dried over anhydrous magnesium sulfate, and the solvent was evaporated. The residue was crystallized from ethyl acetate-diisopropyl ether, to give 3.48 g of the title compound as white crystals. In addition, the mother liquor was concentrated, and then the residue was crystallized from diisopropyl ether, to give 0.37 g of the title compound as white crystals.

Workup

  1. temperaturecooling for 10 minutes
  2. stirringthe mixture was stirred at the same temperature for 30 minutes and at room temperature for 1 hour
  3. temperaturecooled
  4. extractionthe mixture was extracted with 100 ml of ethyl acetate
  5. washThe organic layer was sequentially washed with water and brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customthe solvent was evaporated
  8. customThe residue was crystallized from ethyl acetate-diisopropyl ether

Sources & evidence

ORD record
ord-8746a92b974943309f4166c05d1a4291
Source dataset
uspto-grants-2009_06
Patent number
US07541376B2

Reaction notes

Loading…