Hydrochloric Acid → HCID 12519122, compound

HRID 2099107Notes

Reaction equation

HRID 2099107 reaction equation
Cl.[Sn](Cl)Cl.[N+:5]([C:8]1[CH:13]=[C:12]([C:14]([F:17])([F:16])[F:15])[CH:11]=[CH:10][C:9]=1[N:18]1[C:26]2[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=2)[CH2:20][CH2:19]1)([O-])=O.C(=O)(O)[O-].[Na+]>CO>[NH2:5][C:8]1[CH:13]=[C:12]([C:14]([F:15])([F:16])[F:17])[CH:11]=[CH:10][C:9]=1[N:18]1[C:26]2[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=2)[CH2:20][CH2:19]1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 24479Stannous ChlorideHCID 516892Sodium BicarbonateHCID 3126580HCID 3126580, compound

Product 1

HCID 12519122HCID 12519122, compoundYield 93.9%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Concentrated hydrochloric acid (1.28 ml, 15.4 mmol) and anhydrous tin dichloride (1.57 g, 8.30 mmol) were sequentially added at 0° C. to a methanol (7 ml) solution of 1-(2-nitro-4-(trifluoromethyl)phenyl)indoline (730 mg, 2.37 mmol), obtained as described in Referential Example 19-1. The resulting mixture was warmed to room temperature, and stirred for eight hours. A saturated aqueous solution of sodium bicarbonate was added to the mixture. The resulting mixture was extracted three times with ethyl acetate. The obtained organic layer was washed with a saturated sodium chloride solution, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (50 g, hexane/ethyl acetate=10/1). Thus, 1-[2-amino-4-(trifluoromethyl)phenyl]indoline (619 mg, 93.9%) was yielded as a red-orange colored oily material.

Workup

  1. customobtained
  2. extractionThe resulting mixture was extracted three times with ethyl acetate
  3. washThe obtained organic layer was washed with a saturated sodium chloride solution
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (50 g, hexane/ethyl acetate=10/1)

Sources & evidence

ORD record
ord-da44e92ac5684b46a6c5f5e8c242057e
Source dataset
uspto-grants-2009_08
Patent number
US07569536B2

Reaction notes

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