Ethanol → (S)-N-(2-amino-1-(3-chloro-5-fluorophenyl)ethyl)-4-(3-amino-6-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yl)-2-fluorobenzamide

HRID 596012Notes

Reaction equation

HRID 596012 reaction equation
[NH2:1][C:2]1[C:3]([C:14]2[CH:35]=[CH:34][C:17]([C:18]([NH:20][C@@H:21]([C:26]3[CH:31]=[C:30]([F:32])[CH:29]=[C:28]([Cl:33])[CH:27]=3)[CH2:22][N:23]=[N+]=[N-])=[O:19])=[C:16]([F:36])[CH:15]=2)=[N:4][C:5]([CH:8]2[CH2:13][CH2:12][O:11][CH2:10][CH2:9]2)=[CH:6][N:7]=1.[NH4+].[OH-].CP(C)C.CCO>N1C=CC=CC=1>[NH2:23][CH2:22][C@@H:21]([NH:20][C:18](=[O:19])[C:17]1[CH:34]=[CH:35][C:14]([C:3]2[C:2]([NH2:1])=[N:7][CH:6]=[C:5]([CH:8]3[CH2:9][CH2:10][O:11][CH2:12][CH2:13]3)[N:4]=2)=[CH:15][C:16]=1[F:36])[C:26]1[CH:31]=[C:30]([F:32])[CH:29]=[C:28]([Cl:33])[CH:27]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 14923Ammonium HydroxideHCID 68983TrimethylphosphineHCID 118046045(S)-4-(3-amino-6-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yl)-N-(2-azido-1-(3-chloro-5-fluorophenyl)ethyl)-2-fluorobenzamide

Product 1

HCID 118046027(S)-N-(2-amino-1-(3-chloro-5-fluorophenyl)ethyl)-4-(3-amino-6-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yl)-2-fluorobenzamideYield 79.8%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

To a solution of (S)-4-(3-amino-6-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yl)-N-(2-azido-1-(3-chloro-5-fluorophenyl)ethyl)-2-fluorobenzamide (118 mg, 0.230 mmol) in pyridine (2 mL) was added NH4OH (200 μl) and trimethylphosphine (344 μl, 0.344 mmol) sequentially at room temperature. The reaction mixture was stirred for 2 h. After EtOH (1 mL) was added, the reaction mixture was concentrated in vacuo. The crude product was purified by flash chromatography (20% MeOH in DCM containing 0.5% NH3/DCM) to provide 89.6 mg of (S)—N-(2-amino-1-(3-chloro-5-fluorophenyl)ethyl)-4-(3-amino-6-(tetrahydro-2H-pyran-4-yl)pyrazin-2-yl)-2-fluorobenzamide (79%). LCMS (m/z): 488.2 (MH+), 0.66 min. 1H NMR (500 MHz, METHANOL-d4) δ ppm 7.98-7.89 (m, 1H), 7.89-7.79 (m, 1H), 7.74 (td, J=1.4, 8.0 Hz, 1H), 7.69-7.61 (m, 1H), 7.41-7.28 (m, 1H), 7.27-7.08 (m, 2H), 5.27-5.12 (m, 1H), 4.07 (dd, J=3.8, 11.0 Hz, 2H), 3.69-3.52 (m, 2H), 3.14-3.03 (m, 2H), 2.96 (tt, J=3.9, 11.7 Hz, 1H), 2.02-1.77 (m, 4H).

Workup

  1. concentrationthe reaction mixture was concentrated in vacuo
  2. customThe crude product was purified by flash chromatography (20% MeOH in DCM containing 0.5% NH3/DCM)

Sources & evidence

ORD record
ord-c978110d0ebb47c5ab077decdb013eb8
Source dataset
uspto-grants-2016_01
Patent number
US09242996B2

Reaction notes

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