Sodium hydride → tert-butyl (3RS,4RS)-4-(3-bromophenyl)-3-(naphthalen-2-ylmethoxy)-piperidine-1-carboxylate

HRID 1858551Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1858551
[Br:1][C:2]1[CH:3]=[C:4]([CH:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][CH:9]2[OH:21])[CH:5]=[CH:6][CH:7]=1.Br[CH2:23][C:24]1[CH:33]=[CH:32][C:31]2[C:26](=[CH:27][CH:28]=[CH:29][CH:30]=2)[CH:25]=1.[H-].[Na+]>CN(C)C=O>[Br:1][C:2]1[CH:3]=[C:4]([CH:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:18])([CH3:20])[CH3:19])=[O:15])[CH2:10][CH:9]2[O:21][CH2:23][C:24]2[CH:33]=[CH:32][C:31]3[C:26](=[CH:27][CH:28]=[CH:29][CH:30]=3)[CH:25]=2)[CH:5]=[CH:6][CH:7]=1

Komponenten

5

Edukt 3

HCID 24758Sodium hydrideHCID 703202-BromomethylnaphthaleneHCID 54497878tert-butyl (3RS,4RS)-4-(3-bromophenyl)-3-hydroxy-piperidine-1-carboxylate

Produkt 1

HCID 54568307tert-butyl (3RS,4RS)-4-(3-bromophenyl)-3-(naphthalen-2-ylmethoxy)-piperidine-1-carboxylateAusbeute 74,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A solution of 168 mg (0.47 mmol) of tert-butyl (3RS,4RS)-4-(3-bromophenyl)-3-hydroxy-piperidine-1-carboxylate and 157 mg (0.71 mmol) of 2-bromomethylnaphthalene in 2 ml of dimethylformamide was treated with 28 mg (0.7 mmol) of sodium hydride (60% dispersion in refined oil) and the mixture was stirred at room temperature for 3 hours. Subsequently, the reaction mixture was partitioned between ethyl acetate and water, the organic phase was dried over magnesium sulphate and finally the solvent was removed under reduced pressure. The crude product was purified by chromatography on silica gel with a 1:4 mixture of ethyl acetate and hexane as the eluent. There were obtained 173 mg (74% of theory) of tert-butyl (3RS,4RS)-4-(3-bromophenyl)-3-(naphthalen-2-ylmethoxy)-piperidine-1-carboxylate as a light yellow oil; MS: 439, 441 (M-C4H8)+.

Aufarbeitung

  1. customSubsequently, the reaction mixture was partitioned between ethyl acetate and water
  2. dry with materialthe organic phase was dried over magnesium sulphate
  3. customfinally the solvent was removed under reduced pressure
  4. customThe crude product was purified by chromatography on silica gel with a 1:4 mixture of ethyl acetate and hexane as the eluent

Quellen und Nachweise

ORD-Eintrag
ord-385902f912304481acd0d9fb1d05e04b
Quelldatensatz
uspto-grants-2000_11
Patentnummer
US06150526

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