Triethylamine → 1-[1-(Tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-vinylsulfonyl-2-piperazinone

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Reaktionsgleichung

[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([CH2:14][N:15]2[CH2:20][CH2:19][NH:18][CH2:17][C:16]2=[O:21])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.Cl[CH2:30][CH2:31][S:32](Cl)(=[O:34])=[O:33]>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([CH2:14][N:15]2[CH2:20][CH2:19][N:18]([S:32]([CH:31]=[CH2:30])(=[O:34])=[O:33])[CH2:17][C:16]2=[O:21])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Komponenten

Reaktionsbedingungen

Temperatur: 0 °C

Versuchsvorschrift

To a solution of 1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-2-piperazinone (5.0 g) and triethylamine (6.792 g) in dichloromethane (80 ml) was added dropwise at 0° C. a solution of 2-chloroethanesulfonyl chloride (4.11 g) in dichloromethane (20 ml), and the mixture was stirred at 0° C. for 30 minutes. The reaction solution was diluted with dichloromethane, washed with water, citric acid solution, sodium bicarbonate solution and brine, dried and concentrated, and the residue was purified with silica gel column chromatography (ethyl acetate) to give colorless amorphous of 1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-vinylsulfonyl-2-piperazinone (3.99 g).

Aufarbeitung

washwashed with water, citric acid solution, sodium bicarbonate solution and brine
customdried
concentrationconcentrated
customthe residue was purified with silica gel column chromatography (ethyl acetate)

Quellen und Nachweise

ORD-Eintrag: ord-a3454fa748294861a402b2d45c50b994
Quelldatensatz: uspto-grants-2002_06
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US06403595B1

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