Phthalimide → 2-(3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propyl)isoindoline-1,3-dione

HRID 62063Notes

Reaction equation

HRID 62063 reaction equation
[F:1][C:2]([F:26])([F:25])[O:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:20]=[CH:19][C:18]([CH2:21][CH2:22][CH2:23]O)=[CH:17][CH:16]=3)=[N:11]2)=[CH:6][CH:5]=1.[C:27]1(=[O:37])[NH:31][C:30](=[O:32])[C:29]2=[CH:33][CH:34]=[CH:35][CH:36]=[C:28]12.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>O1CCCC1>[F:26][C:2]([F:1])([F:25])[O:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:20]=[CH:19][C:18]([CH2:21][CH2:22][CH2:23][N:31]4[C:27](=[O:37])[C:28]5[C:29](=[CH:33][CH:34]=[CH:35][CH:36]=5)[C:30]4=[O:32])=[CH:17][CH:16]=3)=[N:11]2)=[CH:6][CH:5]=1

Participants

6

Reactant 4

HCID 6809PhthalimideHCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 1186750883-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propan-1-ol

Product 1

HCID 904048582-(3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propyl)isoindoline-1,3-dioneYield 75%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

In a 250 mL flask, 3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propan-1-ol (3.00 g, 8.24 mmol), phthalimide (2.50 g, 17.3 mmol) and triphenylphosphine (5.20 g, 19.8 mmol) were diluted with tetrahydrofuran (30 mL). The reaction mixture was cooled to 0° C. and diisopropylazodicarboxylate (4.00 g, 19.8 mmol) was added. The reaction mixture was stirred at room temperature for 16 hours. The reaction mixture was concentrated and loaded onto silica gel. The resulting slurry was purified by flash column chromatography using 10% ethyl acetate/petroleum ether as eluent to afford the title compound as white solid (2.50 g, 75%); mp 114-118° C.; 1H NMR (300 MHz, CDCl3) δ 8.53 (s, 1H), 8.07 (d, J=8.1 Hz, 2H), 7.86-7.76 (m, 4H), 7.72-7.66 (m, 2H), 7.37 (d, J=8.7 Hz, 2H), 7.31 (d, J=7.5 Hz, 2H), 3.77 (t, J=6.9 Hz, 2H), 2.75 (t, J=7.8 Hz, 2H), 2.08 (t, J=6.9 Hz, 2H); ES+API m/z 493 ([M+H]+).

Workup

  1. concentrationThe reaction mixture was concentrated and loaded onto silica gel
  2. customThe resulting slurry was purified by flash column chromatography

Sources & evidence

ORD record
ord-2c4dc6e1ac2d4c2083b40a668b3ce7bb
Source dataset
uspto-grants-2016_09
Patent number
US09445594B2

Reaction notes

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