Morpholine → (2R,4S)-4-[(3,5-Bis-trifluoromethyl-benzyl)-(5-morpholin-4-yl-pyrimidin-2-yl)-amino]-2-ethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 409435Notes

Reaction equation

HRID 409435 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([N:13]([CH2:21][C:22]2[CH:27]=[C:26]([C:28]([F:31])([F:30])[F:29])[CH:25]=[C:24]([C:32]([F:35])([F:34])[F:33])[CH:23]=2)[C:14]2[N:19]=[CH:18][C:17](Br)=[CH:16][N:15]=2)[CH2:10][C@H:9]1[CH2:36][CH3:37])=[O:7])([CH3:4])([CH3:3])[CH3:2].[NH:38]1[CH2:43][CH2:42][O:41][CH2:40][CH2:39]1.C(P(C(C)(C)C)C1C=CC=CC=1C1C=CC=CC=1)(C)(C)C.CC(C)([O-])C.[Na+]>C1(C)C=CC=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([N:13]([CH2:21][C:22]2[CH:27]=[C:26]([C:28]([F:31])([F:30])[F:29])[CH:25]=[C:24]([C:32]([F:35])([F:34])[F:33])[CH:23]=2)[C:14]2[N:19]=[CH:18][C:17]([N:38]3[CH2:43][CH2:42][O:41][CH2:40][CH2:39]3)=[CH:16][N:15]=2)[CH2:10][C@H:9]1[CH2:36][CH3:37])=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 4

HCID 8083MorpholineHCID 27342152-(Di-tert-butylphosphino)biphenylHCID 23676156Sodium t-butoxideHCID 59614321(2R,4S)-4-[(3,5-Bis-trifluoromethyl-benzyl)-(5-bromo-pyrimidin-2-yl)-amino]-2-ethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 42635130(2R,4S)-4-[(3,5-Bis-trifluoromethyl-benzyl)-(5-morpholin-4-yl-pyrimidin-2-yl)-amino]-2-ethyl-pyrrolidine-1-carboxylic acid tert-butyl esterYield 82%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

(2R,4S)-4-[(3,5-Bis-trifluoromethyl-benzyl)-(5-bromo-pyrimidin-2-yl)-amino]-2-ethyl-pyrrolidine-1-carboxylic acid tert-butyl ester (0.50 mmol; 299 mg), morpholine (1.0 mmol; 87 mg), tris(dibenzylideneacetone)dipalladium(0) (0.025 mmol; 22.9 mg), 2-(di-tert-butylphosphino)biphenyl (0.05 mmol; 14.9 mg) and sodium tert-butoxide (1.0 mmol; 96 mg) are dissolved in toluene (2.5 mL). The mixture is stirred for 3 hours at 100° C., and then cooled to ambient temperature. The reaction mixture is quenched with saturated aqueous ammonium chloride solution. The product is extracted three times with EtOAc. The combined organic layer is washed with brine, dried over Na2SO4, filtered, concentrated under reduced pressure. The obtained residue is purified by silica gel column chromatography (eluent: n-hexane/EtOAc) to give (2R,4S)-4-[(3,5-Bis-trifluoromethyl-benzyl)-(5-morpholin-4-yl-pyrimidin-2-yl)-amino]-2-ethyl-pyrrolidine-1-carboxylic acid tert-butyl ester (247 mg, 82%); ESI-MS m/z: 604 [M+1]+, Retention time 4.91 min (condition C).

Workup

  1. temperaturecooled to ambient temperature
  2. customThe reaction mixture is quenched with saturated aqueous ammonium chloride solution
  3. extractionThe product is extracted three times with EtOAc
  4. washThe combined organic layer is washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe obtained residue is purified by silica gel column chromatography (eluent: n-hexane/EtOAc)

Sources & evidence

ORD record
ord-23046215c4c84d35bfde8debaba29e9a
Source dataset
uspto-grants-2014_06
Patent number
US08759365B2

Reaction notes

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