N-Hydroxyphthalimide → HCID 66819042, compound

HRID 23994Notes

Reaction equation

HRID 23994 reaction equation
[CH2:1]([O:3][C:4](=[O:26])[CH2:5][CH:6]([N:13]1[C:21]2[C:16](=[CH:17][C:18]([O:22][CH2:23][CH2:24][OH:25])=[CH:19][CH:20]=2)[CH:15]=[CH:14]1)[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1)[CH3:2].O[N:28]1[C:32](=[O:33])[C:31]2=[CH:34][CH:35]=[CH:36][CH:37]=[C:30]2[C:29]1=[O:38].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>[CH2:1]([O:3][C:4](=[O:26])[CH2:5][CH:6]([N:13]1[C:21]2[C:16](=[CH:17][C:18]([O:22][CH2:23][CH2:24][O:25][N:28]3[C:32](=[O:33])[C:31]4[C:30](=[CH:37][CH:36]=[CH:35][CH:34]=4)[C:29]3=[O:38])=[CH:19][CH:20]=2)[CH:15]=[CH:14]1)[C:7]1[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=1)[CH3:2]

Participants

6

Reactant 4

HCID 10665N-HydroxyphthalimideHCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 674283203-[5-(2-Hydroxy-ethoxy)-indol-1-yl]-3-phenyl-propionic acid ethyl ester

Product 1

HCID 66819042HCID 66819042, compoundYield 96%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

3-[5-(2-hydroxy-ethoxy)-indol-1yl]-3-phenyl-propionic acid ethyl ester (0.77 g, 2.10 mmol), N-hydroxyphthalimide (0.40 g, 2.40 mmol) and triphenylphosphine (0.85 g, 3.24 mmol) were dissolved in tetrahydrofuran (5 mL). The mixture was placed under an argon atmosphere at 0° C. and stirred for 10 minutes. Diisopropylazodicarboxylate (0.65 g, 3.24 mmol) was added all at once. After stirring overnight (16 h), the solvent was removed under vacuum, and the crude mixture was purified via column chromatogpraphy to afford the title compound (96% yield). 1H NMR (CDCl3) δ 7.79 (m, 2H), 7.70 (m, 2H), 7.15-7.29 (m, 7H), 7.03 (d, 1H, J=2.3 Hz), 6.69 (dd, 1H, J=2.5, 9.0 Hz), 6.43 (d, 1H, J=3.7 Hz), 5.99 (t, 1H, J=7.7 Hz), 4.56 (m, 2H), 4.34 (m, 2H), 4.02 (c, 2H, J=7.2 Hz), 3.27 (m, 2H), 1.06 (t, 3H, J=7.2 Hz).

Workup

  1. customwas placed under an argon atmosphere at 0° C.
  2. stirringAfter stirring overnight (16 h)
  3. customthe solvent was removed under vacuum
  4. customthe crude mixture was purified via column chromatogpraphy

Sources & evidence

ORD record
ord-44f6c52f5630479fadb791c323770a22
Source dataset
uspto-grants-2005_02
Patent number
US06855722B2

Reaction notes

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