Phthalimide → (R)-tert-butyl 3-((R)-1-(3-chlorophenyl)-1-(2-(1,3-dioxoisoindolin-2-yl)ethoxy)ethyl)piperidine-1-carboxylate

HRID 451716

Reaktionsgleichung

Reaktionsgleichung von HRID 451716
[Cl:1][C:2]1[CH:3]=[C:4]([C@@:8]([C@@H:14]2[CH2:19][CH2:18][CH2:17][N:16]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:15]2)([O:10][CH2:11][CH2:12]O)[CH3:9])[CH:5]=[CH:6][CH:7]=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>C1COCC1>[Cl:1][C:2]1[CH:3]=[C:4]([C@@:8]([C@@H:14]2[CH2:19][CH2:18][CH2:17][N:16]([C:20]([O:22][C:23]([CH3:24])([CH3:26])[CH3:25])=[O:21])[CH2:15]2)([O:10][CH2:11][CH2:12][N:31]2[C:27](=[O:37])[C:28]3[C:29](=[CH:33][CH:34]=[CH:35][CH:36]=3)[C:30]2=[O:32])[CH3:9])[CH:5]=[CH:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 6809PhthalimideHCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 59201466(R)-tert-butyl 3-((R)-1-(3-chlorophenyl)-1-(2-hydroxyethoxy)ethyl)piperidine-1-carboxylate

Produkt 1

HCID 59201660(R)-tert-butyl 3-((R)-1-(3-chlorophenyl)-1-(2-(1,3-dioxoisoindolin-2-yl)ethoxy)ethyl)piperidine-1-carboxylateAusbeute 51 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A mixture of (R)-tert-butyl 3-((R)-1-(3-chlorophenyl)-1-(2-hydroxyethoxy)ethyl)piperidine-1-carboxylate (1.000 g, 2.6 mmol), phthalimide (1.490 g, 10.1 mmol), triphenylphosphine (4.130 g, 15.7 mmol), and DIAD (3.430 g, 17.0 mmol) in THF was stirred at rt for 40 h. After the reaction mixture was evaporated under reduced pressure, the crude product was purified by reversed-phase HPLC to afford 0.6792 g (51%) of (R)-tert-butyl 3-((R)-1-(3-chlorophenyl)-1-(2-(1,3-dioxoisoindolin-2-yl)ethoxy)ethyl)piperidine-1-carboxylate. MS ESI +ve m/z 537 (M+Na).

Aufarbeitung

  1. customAfter the reaction mixture was evaporated under reduced pressure
  2. customthe crude product was purified by reversed-phase HPLC

Quellen und Nachweise

ORD-Eintrag
ord-9555b888116442d585495bf6952c7c3a
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08487108B2

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