4-Chlorobenzenesulfonyl chloride → cis-2-(4-Chlorobenzenesulfonylamino)-cyclohexanecarboxylic acid amide

HRID 7027

Reaktionsgleichung

Reaktionsgleichung von HRID 7027
[NH2:1][C@H:2]1[CH2:7][CH2:6][CH2:5][CH2:4][C@H:3]1[C:8]([NH2:10])=[O:9].C(N(CC)CC)C.[Cl:18][C:19]1[CH:24]=[CH:23][C:22]([S:25](Cl)(=[O:27])=[O:26])=[CH:21][CH:20]=1>ClCCl>[Cl:18][C:19]1[CH:24]=[CH:23][C:22]([S:25]([NH:1][C@H:2]2[CH2:7][CH2:6][CH2:5][CH2:4][C@H:3]2[C:8]([NH2:10])=[O:9])(=[O:27])=[O:26])=[CH:21][CH:20]=1

Komponenten

5

Edukt 3

HCID 73984-Chlorobenzenesulfonyl chlorideHCID 8471TriethylamineHCID 2724813cis-2-Aminocyclohexanecarboxamide

Produkt 1

HCID 69655699cis-2-(4-Chlorobenzenesulfonylamino)-cyclohexanecarboxylic acid amideAusbeute 45,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a solution of cis-2-aminocyclohexanecarboxylic acid amide (2.0 g, 14.0 mmol), and triethylamine (3.9 mL, 28 mmol) in dichloromethane (100 mL) was added 4-chlorobenzenesulfonyl chloride (2.95 g, 14.0 mmol). The resulting solution was stirred at room temperature for 18 h. The reaction was then diluted with dichloromethane (200 mL) and washed with H2O, 1.0 M HCl, brine, and dried over Na2SO4. Further purification by flash chromatography (silica gel, 1% to 10% MeOH/CHCl3) afforded cis-2-(4-chlorobenzenesulfonylamino)-cyclohexanecarboxylic acid amide (2.0 g) as a white solid in 45% yield over three steps: 1H NMR (DMSO-d6) δ 7.82 (m, 2 H), 7.63 (m, 2 H), 7.56 (d, 1 H, J=7.0 Hz), 7.22 (s br, 1 H), 6.80 (s br, 1 H), 3.43 (m, 1 H), 2.37 (m,1 H), 1.72 (m, 2 H), 1.45 (m, 3 H), 1.15 (m, 3 H); MS m/e 317.05 (M+H)+.

Aufarbeitung

  1. washwashed with H2O, 1.0 M HCl, brine
  2. dry with materialdried over Na2SO4
  3. customFurther purification by flash chromatography (silica gel, 1% to 10% MeOH/CHCl3)

Quellen und Nachweise

ORD-Eintrag
ord-5401af972bfd4b98b671d0bcf01afd38
Quelldatensatz
uspto-grants-2006_08
Patentnummer
US07084178B2

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