Trifluoroacetic acid → (3R)-6-cyclohexyl-3-[3-(1-pyrrolidinylcarbonyl)-1,2,4-oxadiazol-5-yl]hexanoic acid

HRID 1279822Notes

Reaction equation

HRID 1279822 reaction equation
[CH:1]1([CH2:7][CH2:8][CH2:9][C@@H:10]([C:19]2[O:23][N:22]=[C:21]([C:24]([N:26]3[CH2:30][CH2:29][CH2:28][CH2:27]3)=[O:25])[N:20]=2)[CH2:11][C:12]([O:14]C(C)(C)C)=[O:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.FC(F)(F)C(O)=O>ClCCl>[CH:1]1([CH2:7][CH2:8][CH2:9][C@@H:10]([C:19]2[O:23][N:22]=[C:21]([C:24]([N:26]3[CH2:30][CH2:29][CH2:28][CH2:27]3)=[O:25])[N:20]=2)[CH2:11][C:12]([OH:14])=[O:13])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 59909814tert-Butyl (3R)-6-cyclohexyl-3-[3-(1-pyrrolidinylcarbonyl)-1,2,4-oxadiazol-5-yl]hexanoate

Product 1

HCID 59909747(3R)-6-cyclohexyl-3-[3-(1-pyrrolidinylcarbonyl)-1,2,4-oxadiazol-5-yl]hexanoic acidYield 93.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of tert-butyl (3R)-6-cyclohexyl-3-[3-(1-pyrrolidinylcarbonyl)-1,2,4-oxadiazol-5-yl]hexanoate (Preparation 12) (356 mg, 0.85 mmol) in dichloromethane (4 ml) was treated with trifluoroacetic acid (1 ml) and the resulting mixture was stirred at room temperature under a nitrogen atmosphere for 17 hours. The solvent was removed under reduced pressure and the residue azeotroped from toluene to afford the title compound (288 mg).

Workup

  1. customThe solvent was removed under reduced pressure
  2. customthe residue azeotroped from toluene

Sources & evidence

ORD record
ord-13042f6c6d5b484aaf209ee788a89039
Source dataset
uspto-grants-2002_09
Patent number
US06448278B2

Reaction notes

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