Triethylamine → (S)-1,4-di(t-butoxycarbonyl)-2-(4-((R)-3-methansulfonyloxy-pyrrolidino)phenyl)piperazine

HRID 1784680Notes

Reaction equation

HRID 1784680 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][C@@H:9]1[C:21]1[CH:26]=[CH:25][C:24]([N:27]2[CH2:31][CH2:30][C@@H:29]([OH:32])[CH2:28]2)=[CH:23][CH:22]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[CH3:40][S:41](Cl)(=[O:43])=[O:42]>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][C@@H:9]1[C:21]1[CH:22]=[CH:23][C:24]([N:27]2[CH2:31][CH2:30][C@@H:29]([O:32][S:41]([CH3:40])(=[O:43])=[O:42])[CH2:28]2)=[CH:25][CH:26]=1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 67117381(S)-1,4-di(t-butoxycarbonyl)-2-(4-((R)-3-hydroxy pyrrolidino)phenyl)piperazine

Product 1

HCID 53628945(S)-1,4-di(t-butoxycarbonyl)-2-(4-((R)-3-methansulfonyloxy-pyrrolidino)phenyl)piperazineYield 101.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (S)-1,4-di(t-butoxycarbonyl)-2-(4-((R)-3-hydroxy pyrrolidino)phenyl)piperazine (733 mg, 1.64 mmol) and triethylamine (0.34 mL, 2.46 mmol) in dichloromethane (20 mL) was added methanesulfonyl chloride (0.152 mL, 1.97 mmol) at 0° C. After stirring for 20 min, the reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated in vacuo to afford (S)-1,4-di(t-butoxycarbonyl)-2-(4-((R)-3-(methansulfonyloxy)pyrrolidin-1-yl) phenyl)piperazine (877 mg, quant.) as a brown solid.

Workup

  1. customthe reaction mixture was partitioned between ethyl acetate and water
  2. washThe organic layer was washed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-36f5f20f38a24420a5fc702d6f4d925d
Source dataset
uspto-grants-2009_03
Patent number
US07504411B2

Reaction notes

Loading…