Triethylamine → 3-Benzyloxycarbonylamino-3-(1,1-difluoro-2-methanesulfonyloxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester

HRID 1912418Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1912418
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][C:10]([NH:19][C:20]([O:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)=[O:21])([C:14]([F:18])([F:17])[CH2:15][OH:16])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[CH3:37][S:38](Cl)(=[O:40])=[O:39].S(=O)(=O)(O)[O-].[K+]>C(Cl)(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][C:10]([NH:19][C:20]([O:22][CH2:23][C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)=[O:21])([C:14]([F:18])([F:17])[CH2:15][O:16][S:38]([CH3:37])(=[O:40])=[O:39])[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Komponenten

6

Edukt 4

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 516920Potassium bisulfateHCID 582933173-Benzyloxycarbonylamino-3-(1,1-difluoro-2-hydroxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester

Produkt 1

HCID 582933543-Benzyloxycarbonylamino-3-(1,1-difluoro-2-methanesulfonyloxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6212ChloroformLösungsmittel

Versuchsvorschrift

To a solution of an optically-active compound of 3-benzyloxycarbonylamino-3-(1,1-difluoro-2-hydroxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester (13.6 g) and triethylamine (11.4 ml) in chloroform (136 ml) cooled to 0° C. was added methanesulfonyl chloride (7.8 ml), and the mixture was stirred for 50 minutes. To the mixture was added 5% aqueous potassium bisulfate solution, and the mixture was extracted with ethyl acetate. The separated organic layer was sequentially washed with 4M aqueous sodium hydroxide solution twice and saturated aqueous sodium chloride solution once, dried over anhydrous sodium sulfate, and concentrated under reduced pressure to give the titled compound (17.1 g).

Aufarbeitung

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe separated organic layer was sequentially washed with 4M aqueous sodium hydroxide solution twice
  3. dry with materialsaturated aqueous sodium chloride solution once, dried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-37eb7b46cd1f43bdad3b309c1fadd2b8
Quelldatensatz
uspto-grants-2013_12
Patentnummer
US08609647B2

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