Cesium carbonate → 1-[4-[2-(Isoquinolin-3-ylamino)-pyridin-4-ylmethyl]-piperazin-1-yl]-ethanone

HRID 1257126Notes

Reaction equation

HRID 1257126 reaction equation
Cl[C:2]1[CH:7]=[C:6]([CH2:8][N:9]2[CH2:14][CH2:13][N:12]([C:15](=[O:17])[CH3:16])[CH2:11][CH2:10]2)[CH:5]=[CH:4][N:3]=1.[NH2:18][C:19]1[N:20]=[CH:21][C:22]2[C:27]([CH:28]=1)=[CH:26][CH:25]=[CH:24][CH:23]=2.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C([O-])([O-])=O.[Cs+].[Cs+]>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].CCOC(C)=O>[CH:21]1[C:22]2[C:27](=[CH:26][CH:25]=[CH:24][CH:23]=2)[CH:28]=[C:19]([NH:18][C:2]2[CH:7]=[C:6]([CH2:8][N:9]3[CH2:14][CH2:13][N:12]([C:15](=[O:17])[CH3:16])[CH2:11][CH2:10]3)[CH:5]=[CH:4][N:3]=2)[N:20]=1

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 311869Isoquinolin-3-AmineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 582851821-(2-Chloropyridin-4-ylmethyl)-4-acetylpiperazine

Product 1

HCID 446124701-[4-[2-(Isoquinolin-3-ylamino)-pyridin-4-ylmethyl]-piperazin-1-yl]-ethanone

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Procedure

1-(2-Chloropyridin-4-ylmethyl)-4-acetylpiperazine (1.0 equiv) (Preparation B-15) was mixed with 3-aminoisoquinoline (1.0 equiv), Pd2(dba)3(0.1 equiv), xantphos (0.15 equiv), and Cs2CO3 (1.4 equiv) in toluene. The mixture was refluxed overnight, and EtOAc was added in to dilute the mixture. After filtration, the filtrate was concentrated and applied onto a silica gel column. The title compound was obtained as a yellow solid (50 mg, yield 48%). 1H NMR (CDCl3, 300 MHz) δ: 2.10 (s, 3H, Ac), 2.47 (t, J=4.1 Hz, 4H, PyCH2NCH2CH2), 3.58 (dt, J=4.8 Hz, 50.7 Hz, 4H, NCH2CO), 3.60 (s, 2H, pyridylCH2), 6.86-8.99 (m, 9H, isoquinolyl+pyridyl).

Workup

  1. temperatureThe mixture was refluxed overnight
  2. additionto dilute the mixture
  3. filtrationAfter filtration
  4. concentrationthe filtrate was concentrated

Sources & evidence

ORD record
ord-4e4cae14340f4d6fb08ae527b6bbb156
Source dataset
uspto-grants-2013_06
Patent number
US08461339B2

Reaction notes

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