Phthalimide → HCID 22380593, compound

HRID 895623Notes

Reaction equation

HRID 895623 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([NH:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=2[CH2:21]O)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:23]1(=[O:33])[NH:27][C:26](=[O:28])[C:25]2=[CH:29][CH:30]=[CH:31][CH:32]=[C:24]12.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>O1CCCC1.O>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][CH:11]([NH:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=2[CH2:21][N:27]2[C:23](=[O:33])[C:24]3=[CH:32][CH:31]=[CH:30][CH:29]=[C:25]3[C:26]2=[O:28])[CH2:12][CH2:13]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 4

HCID 6809PhthalimideHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 10780997tert-Butyl 4-[2-(hydroxymethyl)anilino]piperidine-1-carboxylate

Product 1

HCID 22380593HCID 22380593, compoundYield 41.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

1-(tert-Butoxycarbonyl)-4-[(2-hydroxymethylphenyl)amino]piperidine (716 mg) was dissolved in tetrahydrofuran (7 ml), added with phthalimide (349 mg), triphenylphosphine (736 mg) and diethyl azodicarboxylate (0.43 ml) and stirred at room temperature for 21 hours. The reaction mixture was added with water (10 ml) and extracted twice with dichloromethane (10 ml). The organic layer was dried over anhydrous magnesium sulfate, and then the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: hexane:ethyl acetate=4:1) to obtain crude 1-(tert-butoxycarbonyl)-4-[(2-phthalimidylmethylphenyl)amino]piperidine (420 mg).

Workup

  1. extractionextracted twice with dichloromethane (10 ml)
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. customthe solvent was evaporated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (elution solvent: hexane:ethyl acetate=4:1)

Sources & evidence

ORD record
ord-664b759185ce461b8b41e3efdae5d4cf
Source dataset
uspto-grants-2005_07
Patent number
US06916822B2

Reaction notes

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