Methanesulfonyl chloride → (S)-2-Benzyl-4-(3-cyclopentyloxy4-methoxy-phenyl)-1-methanesulfonyl-piperazine

HRID 1171904Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1171904
[CH2:1]([C@@H:8]1[NH:13][CH2:12][CH2:11][N:10]([C:14]2[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[C:16]([O:22][CH:23]3[CH2:27][CH2:26][CH2:25][CH2:24]3)[CH:15]=2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:28][S:29](Cl)(=[O:31])=[O:30]>N1C=CC=CC=1>[CH2:1]([C@H:8]1[CH2:9][N:10]([C:14]2[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[C:16]([O:22][CH:23]3[CH2:27][CH2:26][CH2:25][CH2:24]3)[CH:15]=2)[CH2:11][CH2:12][N:13]1[S:29]([CH3:28])(=[O:31])=[O:30])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

4

Edukt 2

HCID 31297Methanesulfonyl chlorideHCID 16725642(S)-3-Benzyl-1-(3-cyclopentyloxy-4-methoxy-phenyl)-piperazine

Produkt 1

HCID 23627630(S)-2-Benzyl-4-(3-cyclopentyloxy4-methoxy-phenyl)-1-methanesulfonyl-piperazineAusbeute 91 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

A solution of the bis-hydrochloride salt of (S)-3-Benzyl-1-(3-cyclopentyloxy-4-methoxy-phenyl)-piperazine (Example 2) (50 mg, 0.114 mmol) in pyridine (1 mL) was treated with methanesulfonyl chloride (26 μL, 0.341 mmol) and stirred at room temperature for 16 h. The reaction mixture was evaporated and partitioned between EtOAc (2 mL) and a saturated aqueous NaHCO3 solution (2 mL). The organic component was separated, dried over MgSO4, filtered, and evaporated to an oil which was purified by silica gel flash chromatography with 30% then 40% EtOAc/hexane as eluant to afford product as an oil (46 mg, 91%). 1H NMR (CDCl3) 1.60-1.62 (M, 2H), 1.84-1.87 (m, 4H), 1.90-2.04 (m, 2H), 2.55 (s, 3H), 2.76-2.80 (m, 2H), 3.19-3.56 (m, 5H), 3.77 (m, 1H), 3.80 (s, 3H), 4.30 (br t, 1H), 4.71 (m, 1H), 6.42 (br d, J=8.1, 1H), 6.48 (br s, 1H), 6.78 (d, J=8.6, 1H), 7.23-7.36 (m, 5H). LC/MS 7.25 min, [M+1]+ 445.

Aufarbeitung

  1. customThe reaction mixture was evaporated
  2. custompartitioned between EtOAc (2 mL)
  3. customThe organic component was separated
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. customevaporated to an oil which
  7. customwas purified by silica gel flash chromatography with 30%

Quellen und Nachweise

ORD-Eintrag
ord-3baaa29e849f4e918a391abab3d9a392
Quelldatensatz
uspto-grants-2010_11
Patentnummer
US07829713B2

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