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

HRID 20153Notes

Reaction equation

HRID 20153 reaction equation
[F:1][C:2]1[C:7]([F:8])=[CH:6][CH:5]=[CH:4][C:3]=1[C@H:9]1[CH2:15][N:14]([CH2:16][C:17]2[S:18][CH:19]=[CH:20][N:21]=2)[C:13](=[O:22])[C@H:12]([N:23](C(OC(C)(C)C)=O)C(OC(C)(C)C)=O)[CH2:11][CH2:10]1.FC(F)(F)C(O)=O>C(Cl)Cl.C(=O)(O)[O-].[Na+]>[NH2:23][C@@H:12]1[CH2:11][CH2:10][C@@H:9]([C:3]2[CH:4]=[CH:5][CH:6]=[C:7]([F:8])[C:2]=2[F:1])[CH2:15][N:14]([CH2:16][C:17]2[S:18][CH:19]=[CH:20][N:21]=2)[C:13]1=[O:22]

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-e630ffbf60904cd5a102566401039d74
Source dataset
uspto-grants-2010_06
Patent number
US07745427B2

Reaction notes

Loading…