1-Hexanesulfonyl chloride → Hexane-1-sulfonic acid {5-[4-(2-trifluoromethylbenzoyl)piperazin-1-YL]pyridin-2-YL}amide

HRID 389978

Reaction equation

[NH2:1][C:2]1[N:7]=[CH:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]([F:25])([F:24])[F:23])=[O:15])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[CH2:26]([S:32](Cl)(=[O:34])=[O:33])[CH2:27][CH2:28][CH2:29][CH2:30][CH3:31]>N1C=CC=CC=1.C(OCC)(=O)C>[F:23][C:22]([F:25])([F:24])[C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][C:16]=1[C:14]([N:11]1[CH2:10][CH2:9][N:8]([C:5]2[CH:4]=[CH:3][C:2]([NH:1][S:32]([CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH3:31])(=[O:34])=[O:33])=[N:7][CH:6]=2)[CH2:13][CH2:12]1)=[O:15]

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of [4-(6-aminopyridin-3-yl)piperazin-1-yl]-(2-trifluoromethylphenyl)-methanone (0.035 g, 0.10 mmol) in pyridine (3 mL) was added hexanesulfonyl chloride (0.022 mL, 0.12 mmol). After heating at 60° C. for 20 h, the mixture was diluted with ethyl acetate (100 mL), washed with brine, dried over anhydrous MgSO4 and concentrated in vacuo. Purification by preparative thin layer chromatography afforded the title compound as a white solid (3.8 mg, 8% yield). 1H NMR (300 MHz, CDCl3) δ 7.66, 7.29, 4.08, 3.91, 3.38, 3.27, 3.08, 1.84, 1.35, 1.27, 0.87. MS (ES+) m/z 499.4 (M+1).

Workup

washwashed with brine
dry with materialdried over anhydrous MgSO4
concentrationconcentrated in vacuo
customPurification by preparative thin layer chromatography

Sources & evidence

ORD record: ord-e33776045e6c44e9acbd26e6e6c5ac00
Source dataset: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08383628B2

Linked notes

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