Sodium Bicarbonate → (2S)-2-(4-trifluoromethylphenylthiomethyl)-pyrrolidine

HRID 361694Notes

Reaction equation

HRID 361694 reaction equation
C(OC([N:8]1[CH2:12][CH2:11][CH2:10][C@H:9]1[CH2:13][S:14][C:15]1[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:17][CH:16]=1)=O)(C)(C)C.C(=O)(O)[O-].[Na+]>FC(F)(F)C(O)=O>[F:24][C:21]([F:22])([F:23])[C:18]1[CH:17]=[CH:16][C:15]([S:14][CH2:13][C@@H:9]2[CH2:10][CH2:11][CH2:12][NH:8]2)=[CH:20][CH:19]=1

Participants

4

Reactant 2

HCID 516892Sodium BicarbonateHCID 69338860N-tert-butyloxycarbonyl-(2S)-2-(4-trifluoromethylphenylthiomethyl)-pyrrolidine

Product 1

HCID 57133071(2S)-2-(4-trifluoromethylphenylthiomethyl)-pyrrolidineYield 30.2%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Procedure

A solution of 2.55 g of N-tert-butyloxycarbonyl-(2S)-2-(4-trifluoromethylphenylthiomethyl)-pyrrolidine in 5.64 ml of trifluoroacetic acid is stirred for 1 hour at 0° C. and then for 3.5 hours at room temperature. The reaction mixture is poured onto 10% sodium bicarbonate solution, extracted with ethyl acetate, washed twice with 2M hydrochloric acid, the water phase is extracted with ether, made basic with sodium bicarbonate, extracted three times with ethyl acetate, washed with common salt solution, dried on sodium sulfate and concentrated by evaporation. 557 mg of (2S)-2-(4-trifluoromethylphenylthio-methyl)-pyrrolidine is obtained.

Workup

  1. extractionextracted with ethyl acetate
  2. washwashed twice with 2M hydrochloric acid
  3. extractionthe water phase is extracted with ether
  4. extractionextracted three times with ethyl acetate
  5. washwashed with common salt solution
  6. customdried on sodium sulfate
  7. concentrationconcentrated by evaporation

Sources & evidence

ORD record
ord-4c99b7a693d94656840ff3d491137dc6
Source dataset
uspto-grants-1999_02
Patent number
US05866560

Reaction notes

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