Triethylamine → methyl 4-((2S,4S)-1-(2-(2-chlorophenylamino)-6-benzoxazolylacetyl)-4-fluoro-2-pyrrolidinylmethoxy)benzoate

HRID 1372569Notes

Reaction equation

HRID 1372569 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[NH:8][C:9]1[O:10][C:11]2[CH:17]=[C:16]([CH2:18][C:19]([OH:21])=O)[CH:15]=[CH:14][C:12]=2[N:13]=1.[F:22][C@@H:23]1[CH2:27][NH:26][C@H:25]([CH2:28][O:29][C:30]2[CH:39]=[CH:38][C:33]([C:34]([O:36][CH3:37])=[O:35])=[CH:32][CH:31]=2)[CH2:24]1.CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1.C(N(CC)CC)C>CN(C=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[NH:8][C:9]1[O:10][C:11]2[CH:17]=[C:16]([CH2:18][C:19]([N:26]3[CH2:27][C@@H:23]([F:22])[CH2:24][C@H:25]3[CH2:28][O:29][C:30]3[CH:39]=[CH:38][C:33]([C:34]([O:36][CH3:37])=[O:35])=[CH:32][CH:31]=3)=[O:21])[CH:15]=[CH:14][C:12]=2[N:13]=1

Participants

7

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 16093588HCID 16093588, compoundHCID 58778853HCID 58778853, compound

Product 1

HCID 58778861methyl 4-((2S,4S)-1-(2-(2-chlorophenylamino)-6-benzoxazolylacetyl)-4-fluoro-2-pyrrolidinylmethoxy)benzoateYield 67%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

In DMF (5 ml), 2-(2-chlorophenylamino)-6-benzoxazolylacetic acid (303 mg, 1.0 mmol), methyl 4-((2S,4S)-4-fluoro-2-pyrrolidinylmethoxy)benzoate (253 mg, 1.0 mmol), EDC•HCl (288 mg, 1.5 mmol), HOBt (203 mg, 1.5 mmol) and triethylamine (0.70 ml, 5.0 mmol) were stirred at room temperature for 14 hours. The reaction mixture was poured in ice water (30 ml), followed by extraction with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate and distilled under reduced pressure to remove the solvent. The residue was purified by chromatography on a silica gel column (silica gel: 50 g), whereby from chloroform/acetone (10/1) eluate fractions, the title compound (360 mg, 67%) was obtained as a colorless amorphous substance.

Workup

  1. extractionfollowed by extraction with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. distillationdistilled under reduced pressure
  5. customto remove the solvent
  6. customThe residue was purified by chromatography on a silica gel column (silica gel: 50 g), whereby from chloroform/acetone (10/1) eluate fractions

Sources & evidence

ORD record
ord-67547b88c7c541a4b191e8a3d0a92ed5
Source dataset
uspto-grants-2007_01
Patent number
US07157487B2

Reaction notes

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