Phthalimide → [3-(3-Chloro-phenyl)-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-propyl]-carbamic acid tert-butyl ester

HRID 1186518Notes

Reaction equation

HRID 1186518 reaction equation
[C:1]([O:5][C:6](=[O:19])[NH:7][CH2:8][CH2:9][CH:10]([C:12]1[CH:17]=[CH:16][CH:15]=[C:14]([Cl:18])[CH:13]=1)O)([CH3:4])([CH3:3])[CH3:2].[C:20]1(=[O:30])[NH:24][C:23](=[O:25])[C:22]2=[CH:26][CH:27]=[CH:28][CH:29]=[C:21]12.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CCOC(/N=N/C(OCC)=O)=O>C1COCC1>[C:1]([O:5][C:6](=[O:19])[NH:7][CH2:8][CH2:9][CH:10]([C:12]1[CH:17]=[CH:16][CH:15]=[C:14]([Cl:18])[CH:13]=1)[N:24]1[C:20](=[O:30])[C:21]2[C:22](=[CH:26][CH:27]=[CH:28][CH:29]=2)[C:23]1=[O:25])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 4

HCID 6809PhthalimideHCID 11776TriphenylphosphineHCID 5462977Diethyl azodicarboxylateHCID 59868413[3-(3-Chloro-phenyl)-3-hydroxy-propyl]carbamic acid tert-butyl ester

Product 1

HCID 68107198[3-(3-Chloro-phenyl)-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-propyl]-carbamic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a stirred solution of [3-(3-chloro-phenyl)-3-hydroxy-propyl]carbamic acid tert-butyl ester (12 g, 42 mmol), phthalimide (6.2 g, 42 mmol), and PPh3 (14.3 g, 55 mmol) in THF (150 mL) was added DEAD (9.0 mL, 55 mmol) dropwise at about 5° C. After 1 hour, the mixture was concentrated to dryness. The residue was purified by column chromatography (ethyl acetate:petroleum ether, 1:8) to afford [3-(3-chloro-phenyl)-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-propyl]-carbamic acid tert-butyl ester. (Yield 15.65 g, 90%). LC-MS: [M+H]+ 415.

Workup

  1. concentrationthe mixture was concentrated to dryness
  2. customThe residue was purified by column chromatography (ethyl acetate:petroleum ether, 1:8)

Sources & evidence

ORD record
ord-39952eb81c6b4d73b36a490ec0b55473
Source dataset
uspto-grants-2014_03
Patent number
US08673905B2

Reaction notes

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