4-Chlorobenzylamine → (4-Chloro-benzyl)-{6-[8-(4-methyl-piperazin-1-yl)-imidazo[1,2-a]pyrazin-3-yl]-pyridin-2-yl}-amine

HRID 1186531Notes

Reaction equation

HRID 1186531 reaction equation
Br[C:2]1[N:7]=[C:6]([C:8]2[N:12]3[CH:13]=[CH:14][N:15]=[C:16]([N:17]4[CH2:22][CH2:21][N:20]([CH3:23])[CH2:19][CH2:18]4)[C:11]3=[N:10][CH:9]=2)[CH:5]=[CH:4][CH:3]=1.[Cl:24][C:25]1[CH:32]=[CH:31][C:28]([CH2:29][NH2:30])=[CH:27][CH:26]=1.CN(C1C(C2C(P(C3CCCCC3)C3CCCCC3)=CC=CC=2)=CC=CC=1)C.CC([O-])(C)C.[Na+]>O1CCOCC1.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]>[Cl:24][C:25]1[CH:32]=[CH:31][C:28]([CH2:29][NH:30][C:2]2[CH:3]=[CH:4][CH:5]=[C:6]([C:8]3[N:12]4[CH:13]=[CH:14][N:15]=[C:16]([N:17]5[CH2:22][CH2:21][N:20]([CH3:23])[CH2:19][CH2:18]5)[C:11]4=[N:10][CH:9]=3)[N:7]=2)=[CH:27][CH:26]=1

Participants

7

Reactant 4

HCID 660364-ChlorobenzylamineHCID 27342172-(Dicyclohexylphosphino)-2'-(dimethylamino)biphenylHCID 23676156Sodium t-butoxideHCID 86670919HCID 86670919, compound

Product 1

HCID 66546146(4-Chloro-benzyl)-{6-[8-(4-methyl-piperazin-1-yl)-imidazo[1,2-a]pyrazin-3-yl]-pyridin-2-yl}-amine

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 3-(6-bromo-pyridin-2-yl)-8-(4-methyl-piperazin-1-yl)-imidazo[1,2-a]pyrazine (from Example 39 supra) (0.373 g, 1.0 mmol), 4-chloro-benzylamine (0.14 g, 1.0 mmol), Pd2(dba)3 (60 mg), Davephos (80 mg), NaOtBu (140 mg, 1.46 mmol) suspended in dioxane (25 mL). The solution was bubbled with N2 for several minutes and then heated under N2 at 100° C. for 15 hours. The solution was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure. The obtained crude product was purified by preparative-HPLC to give (4-chloro-benzyl)-{6-[8-(4-methyl-piperazin-1-yl)-imidazo[1,2-a]pyrazin-3-yl]-pyridin-2-yl}-amine; hydrochloride. (Yield 31 mg, 7.1%).

Workup

  1. customThe solution was bubbled with N2 for several minutes
  2. temperatureThe solution was then cooled to room temperature
  3. filtrationfiltered
  4. concentrationThe filtrate was concentrated under reduced pressure
  5. customThe obtained crude product
  6. customwas purified by preparative-HPLC

Sources & evidence

ORD record
ord-7f8820c1627c4c97aa28cc5208ea8fec
Source dataset
uspto-grants-2014_03
Patent number
US08673905B2

Reaction notes

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