Stannous chloride dihydrate → (3RS,4SR)-1-Benzyl-4-(4-chloro-3-fluoro-phenyl)-pyrrolidin-3-ylamine

HRID 2066982Notes

Reaction equation

HRID 2066982 reaction equation
[CH2:1]([N:8]1[CH2:12][CH:11]([N+:13]([O-])=O)[CH:10]([C:16]2[CH:21]=[CH:20][C:19]([Cl:22])=[C:18]([F:23])[CH:17]=2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.O.O.Cl[Sn]Cl.C([O-])(O)=O.[Na+]>CCOC(C)=O>[CH2:1]([N:8]1[CH2:9][CH:10]([C:16]2[CH:21]=[CH:20][C:19]([Cl:22])=[C:18]([F:23])[CH:17]=2)[CH:11]([NH2:13])[CH2:12]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 61436Stannous chloride dihydrateHCID 516892Sodium BicarbonateHCID 67218001HCID 67218001, compound

Product 1

HCID 67218122(3RS,4SR)-1-Benzyl-4-(4-chloro-3-fluoro-phenyl)-pyrrolidin-3-ylamineYield 65%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To a stirred solution of (3SR,4RS)-1-benzyl-3-(4-chloro-3-fluoro-phenyl)-4-nitro-pyrrolidine (0.78 g, 2.33 mmol) in EtOAc (15 ml) was added portion wise SnCl2.2H2O (2.63 g, 11.6 mmol). The reaction mixture was then heated at reflux for 4 hours, cooled down to RT and a saturated aqueous solution of NaHCO3 (500 ml) was added. The salts were filtered off and the product extracted with EtOAc. The organic phases were then dried over Na2SO4, and concentration under vacuum. A column chromatography (CH2Cl2/MeOH 95/5) gave 0.46 g (65%) of the title compound as a light brown oil. ES-MS m/e: 305.1 (M+H+).

Workup

  1. temperatureThe reaction mixture was then heated
  2. temperatureat reflux for 4 hours
  3. filtrationThe salts were filtered off
  4. extractionthe product extracted with EtOAc
  5. dry with materialThe organic phases were then dried over Na2SO4, and concentration under vacuum

Sources & evidence

ORD record
ord-dfc8c8ea6eca4648ade69e77fadc2462
Source dataset
uspto-grants-2012_10
Patent number
US08293770B2

Reaction notes

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