Phthalimide → 2-[4-Methyl-4-(4-pyridin-3-yl-imidazol-1-yl)-pentyl]-isoindole-1,3-dione

HRID 2055133Notes

Reaction equation

HRID 2055133 reaction equation
[CH3:1][C:2]([N:8]1[CH:12]=[C:11]([C:13]2[CH:14]=[N:15][CH:16]=[CH:17][CH:18]=2)[N:10]=[CH:9]1)([CH3:7])[CH2:3][CH2:4][CH2:5]O.N(C(OCC)=O)=NC(OCC)=O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:50]1(=[O:60])[NH:54][C:53](=[O:55])[C:52]2=[CH:56][CH:57]=[CH:58][CH:59]=[C:51]12>C1COCC1>[CH3:1][C:2]([N:8]1[CH:12]=[C:11]([C:13]2[CH:14]=[N:15][CH:16]=[CH:17][CH:18]=2)[N:10]=[CH:9]1)([CH3:7])[CH2:3][CH2:4][CH2:5][N:54]1[C:50](=[O:60])[C:51]2[C:52](=[CH:56][CH:57]=[CH:58][CH:59]=2)[C:53]1=[O:55]

Participants

6

Reactant 4

HCID 6809PhthalimideHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 235114074-Methyl-4-(4-pyridin-3-yl-imidazol-1-yl)-pentan-1-ol

Product 1

HCID 235114002-[4-Methyl-4-(4-pyridin-3-yl-imidazol-1-yl)-pentyl]-isoindole-1,3-dioneYield 66%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 4-methyl-4-(4-pyridin-3-yl-imidazol-1-yl)-pentan-1-ol (1 eq) in THF (20 ml) was added dropwise diethyl azodicarboxylate (1.1 eq), triphenyl phosphine (1.1 eq), and pthalimide (1.1 eq). The yellow solution was stirred at room temperature overnight and the solution was concentrated. The crude product was directly purified by flash chromatography using a solvent gradient of 97% DCM, 3% MeOH, and 0.1% TEA to yield 2-[4-methyl-4-(4-pyridin-3-yl-imidazol-1-yl)-pentyl]-isoindole-1,3-dione (66%). MH+(375)

Workup

  1. concentrationthe solution was concentrated
  2. customThe crude product was directly purified by flash chromatography

Sources & evidence

ORD record
ord-025219722f8b45e5b5abf267bb829062
Source dataset
uspto-grants-2008_02
Patent number
US07332476B2

Reaction notes

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