Trifluoroacetic acid → (3R,6S)-3-Amino-6-(2,3-difluorophenyl)-1-(1,3-thiazol-2-ylmethyl)azepan-2-one

HRID 493662Notes

Reaction equation

HRID 493662 reaction equation
C(OC([N:8]([C@@H:16]1[CH2:22][CH2:21][C@@H:20]([C:23]2[CH:28]=[CH:27][CH:26]=[C:25]([F:29])[C:24]=2[F:30])[CH2:19][N:18]([CH2:31][C:32]2[S:33][CH:34]=[CH:35][N:36]=2)[C:17]1=[O:37])C(OC(C)(C)C)=O)=O)(C)(C)C.FC(F)(F)C(O)=O>C(Cl)Cl.C(=O)(O)[O-].[Na+]>[NH2:8][C@@H:16]1[CH2:22][CH2:21][C@@H:20]([C:23]2[CH:28]=[CH:27][CH:26]=[C:25]([F:29])[C:24]=2[F:30])[CH2:19][N:18]([CH2:31][C:32]2[S:33][CH:34]=[CH:35][N:36]=2)[C:17]1=[O:37]

Participants

5

Reactant 2

HCID 6422Trifluoroacetic acidHCID 21114342Di-tert-butyl[(3R,6S)-6-(2,3-difluorophenyl)-2-oxo-1-(1,3-thiazol-2-ylmethyl)azepan-3-yl]imidodicarbonate

Product 1

HCID 60037855(3R,6S)-3-Amino-6-(2,3-difluorophenyl)-1-(1,3-thiazol-2-ylmethyl)azepan-2-oneYield 0.1%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 516892Sodium BicarbonateSolvent

Procedure

A solution of di-tert-butyl[(3R,6S)-6-(2,3-difluorophenyl)-2-oxo-1-(1,3-thiazol-2-ylmethyl)azepan-3-yl]imidodicarbonate (0.481 g, 0.895 mmol) in DCM (10 mL) was treated with trifluoroacetic acid (3 mL). After 1 h the reaction was diluted with saturated aqueous sodium bicarbonate, the layers separated, and the aqueous phase extracted with DCM (2×). The organic washes were combined, dried over magnesium sulfate, and concentrated to afford the title compound (0.30 mg). MS 338.2 (M+1).

Workup

  1. customthe layers separated
  2. extractionthe aqueous phase extracted with DCM (2×)
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-6de9730a755e4c169c2e434b14f64a40
Source dataset
uspto-grants-2009_05
Patent number
US07534784B2

Reaction notes

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