Aniline → N4-(6-aminopyridin-2-yl)-N6-phenylpyrimidine-4,6-diamine

HRID 929882Notes

Reaction equation

HRID 929882 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C([O-])([O-])=O.[Cs+].[Cs+].Cl[C:15]1[N:20]=[CH:19][N:18]=[C:17]([NH:21][C:22]2[CH:27]=[CH:26][CH:25]=[C:24]([NH2:28])[N:23]=2)[CH:16]=1>CN(C=O)C>[NH2:28][C:24]1[N:23]=[C:22]([NH:21][C:17]2[CH:16]=[C:15]([NH:1][C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[N:20]=[CH:19][N:18]=2)[CH:27]=[CH:26][CH:25]=1

Participants

5

Reactant 3

HCID 6115AnilineHCID 10796Cesium carbonateHCID 57708264N2-(6-chloropyrimidin-4-yl)pyridine-2,6-diamine

Product 1

HCID 57708273N4-(6-aminopyridin-2-yl)-N6-phenylpyrimidine-4,6-diamineYield 36.9%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a stirred solution of 2 (4.35 g, 23.38 mmol) and Cs2CO3 (15.26 g, 46.76 mmol) in dry DMF (50 mL) was added 1 (5.0 g, 15.58 mmol) at rt and the reaction was stirred at 80° C. for 16 h under nitrogen atmosphere. The reaction mixture was cooled, concentrated under reduced pressure and the residue was diluted with ethyl acetate (50 mL). It was washed with water (2×10 mL), brine (10 mL), dried over Na2SO4 and concentrated under reduced pressure. The residue was further purified by column chromatography (SiO2, 60-120, pet ether/ethyl acetate, 5/5) to give 3 (1.6 g, 23.3%) as brown solid.

Workup

  1. temperatureThe reaction mixture was cooled
  2. concentrationconcentrated under reduced pressure
  3. additionthe residue was diluted with ethyl acetate (50 mL)
  4. washIt was washed with water (2×10 mL), brine (10 mL)
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was further purified by column chromatography (SiO2, 60-120, pet ether/ethyl acetate, 5/5)

Sources & evidence

ORD record
ord-9b759f18e49b49218e1cbfe0ccb51fe6
Source dataset
uspto-grants-2016_03
Patent number
US09296704B2

Reaction notes

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