Cesium fluoride → (S)-2-[5-Naphthalen-1-yl-2-oxo-3-(4-trifluoromethylbenzoylamino)-2H-pyridin-1-yl]-3-phenylpropionic acid methyl ester

HRID 7807

Reaction equation

HRID 7807 reaction equation
[CH3:1][O:2][C:3](=[O:33])[C@@H:4]([N:12]1[CH:17]=[C:16](Br)[CH:15]=[C:14]([NH:19][C:20](=[O:31])[C:21]2[CH:26]=[CH:25][C:24]([C:27]([F:30])([F:29])[F:28])=[CH:23][CH:22]=2)[C:13]1=[O:32])[CH2:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.B(O)(O)[C:35]1[C:44]2[C:39](=[CH:40][CH:41]=[CH:42][CH:43]=2)[CH:38]=[CH:37][CH:36]=1.[F-].[Cs+]>O1CCCC1.C(OCC)C.CC(C)([P](C(C)(C)C)([Pd][P](C(C)(C)C)(C(C)(C)C)C(C)(C)C)C(C)(C)C)C>[CH3:1][O:2][C:3](=[O:33])[C@@H:4]([N:12]1[CH:17]=[C:16]([C:43]2[C:44]3[C:39](=[CH:38][CH:37]=[CH:36][CH:35]=3)[CH:40]=[CH:41][CH:42]=2)[CH:15]=[C:14]([NH:19][C:20](=[O:31])[C:21]2[CH:26]=[CH:25][C:24]([C:27]([F:30])([F:29])[F:28])=[CH:23][CH:22]=2)[C:13]1=[O:32])[CH2:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1

Participants

7

Reactant 3

HCID 25953Cesium fluorideHCID 2545321-Naphthaleneboronic acidHCID 69587645(S)-2-[5-Bromo-2-oxo-3-(4-trifluoromethylbenzoylamino)-2H-pyridin-1-yl]-3-phenylpropionic acid methyl ester

Product 1

HCID 69587926(S)-2-[5-Naphthalen-1-yl-2-oxo-3-(4-trifluoromethylbenzoylamino)-2H-pyridin-1-yl]-3-phenylpropionic acid methyl esterYield 81%

Reagents, catalysts & solvents 3

HCID 178418851HCID 178418851, compoundCatalystHCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of (S)-2-[5-bromo-2-oxo-3-(4-trifluoromethylbenzoylamino)-2H-pyridin-1-yl]-3-phenylpropionic acid methyl ester from Step E (66.8 mg, 0.128 mmol), 1-naphthyleneboronic acid (44.0 mg, 0.256 mmol), cesium fluoride (97 mg, 0.64 mmol), tris(dibenzylideneacetone)dipalladium(0) chloroform complex (13.0 mg, 0.013 mmol) and bis(tri-t-butylphosphine)palladium(0) (16.0 mg, 0.031 mmol) in tetrahydrofuran (2.0 mL) was heated to reflux for 15 h. The reaction mixture was cooled to room temperature, diluted with diethyl ether (100 mL), washed with saturated ammonium chloride solution and brine. The organic layer was separated, dried with sodium sulfate, filtered and concentrated. Purification by medium pressure liquid chromatography on silica gel (1:5 ethyl acetate/hexanes) gave 59 mg (81%) of the title compound as a semisolid. MS 571.2 (M+H)+.

Workup

  1. temperaturewas heated
  2. temperatureto reflux for 15 h
  3. washwashed with saturated ammonium chloride solution and brine
  4. customThe organic layer was separated
  5. dry with materialdried with sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customPurification by medium pressure liquid chromatography on silica gel (1:5 ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-0a77d0470a194567bea60da99ff1e7cf
Source dataset
uspto-grants-2006_08
Patent number
US07087622B2

Linked notes

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