Nitrogen → (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)propanoate

HRID 1623005Notes

Reaction equation

HRID 1623005 reaction equation
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:20][C:21]1[CH:26]=[CH:25][C:24]([C:27]2[N:32]=[CH:31][C:30](Br)=[CH:29][N:28]=2)=[CH:23][CH:22]=1)[C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:34]([C:38]1[CH:43]=[CH:42][C:41](B(O)O)=[CH:40][CH:39]=1)([CH3:37])([CH3:36])[CH3:35].C(=O)(O)[O-].[Na+].N#N>C(#N)C.C1COCC1.O.CC(=O)OCC.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:20][C:21]1[CH:26]=[CH:25][C:24]([C:27]2[N:32]=[CH:31][C:30]([C:41]3[CH:42]=[CH:43][C:38]([C:34]([CH3:37])([CH3:36])[CH3:35])=[CH:39][CH:40]=3)=[CH:29][N:28]=2)=[CH:23][CH:22]=1)[C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

10

Reactant 4

HCID 947NitrogenHCID 516892Sodium BicarbonateHCID 27343204-tert-Butylphenylboronic acidHCID 86689671(S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate

Product 1

HCID 86689673(S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)propanoateYield 70%

Reagents, catalysts & solvents 5

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 6342AcetonitrileSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
110 °C

Procedure

Prepared using General Procedure 10: A stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate INT-7 (0.96 g, 1.86 mmol), (4-(tert-butyl)phenyl)boronic acid (0.43 g, 2.42 mmol) and sodium bicarbonate (0.39 g, 4.66 mmol) in acetonitrile (5 ml), THF (5 ml) and water (5 ml) was degassed with N2 for 5 min. Pd(dppf)Cl2 (0.136 g, 0.186 mmol) was added and the reaction was heated to 110° C. in the microwave for 45 min. The reaction was diluted with EA (50 mL) and filtered over celite. The organic phase was washed with water (100 mL) and concentrated. The crude product was purified by chromatography on silica gel (EA/isohexanes) to afford 757 mg (70%) of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)propanoate INT-10 as a white powder. LCMS-ESI (m/z) calculated for C35H39N3O4: 565.3; no m/z observed, tR=3.39 min (Method 8).

Workup

  1. customPrepared
  2. filtrationfiltered over celite
  3. washThe organic phase was washed with water (100 mL)
  4. concentrationconcentrated
  5. customThe crude product was purified by chromatography on silica gel (EA/isohexanes)

Sources & evidence

ORD record
ord-118a1de544ca4c6396c87bd3d8b7acd8
Source dataset
uspto-grants-2014_07
Patent number
US08778923B2

Reaction notes

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