Ethyl Acetate → 1-[5-(1,1-Dioxo-1,2,3,6-tetrahydro-1lambda6-thiopyran-4-yl)-2-nitro-phenyl]-4-methyl-piperidine

HRID 646911Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 646911
ClC1C=C(C=CC=1)C(OO)=O.S1[CH2:17][CH:16]=[C:15]([C:18]2[CH:19]=[CH:20][C:21]([N+:31]([O-:33])=[O:32])=[C:22]([N:24]3[CH2:29][CH2:28][CH:27]([CH3:30])[CH2:26][CH2:25]3)[CH:23]=2)[CH2:14][CH2:13]1.[O-:34][S:35]([O-:37])=O.[Na+].[Na+].CCOC(C)=O>C(Cl)Cl.O>[O:34]=[S:35]1(=[O:37])[CH2:13][CH:14]=[C:15]([C:18]2[CH:19]=[CH:20][C:21]([N+:31]([O-:33])=[O:32])=[C:22]([N:24]3[CH2:29][CH2:28][CH:27]([CH3:30])[CH2:26][CH2:25]3)[CH:23]=2)[CH2:16][CH2:17]1

Komponenten

7

Edukt 4

HCID 8857Ethyl AcetateHCID 24437Sodium SulfiteHCID 70297m-Chloroperbenzoic acidHCID 586385191-[5-(3,6-Dihydro-2H-thiopyran-4-yl)-2-nitro-phenyl]-4-methyl-piperidine

Produkt 1

HCID 586385131-[5-(1,1-Dioxo-1,2,3,6-tetrahydro-1lambda6-thiopyran-4-yl)-2-nitro-phenyl]-4-methyl-piperidineAusbeute 64 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6344DichloromethaneLösungsmittel2×

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

A mixture of 3-chloroperoxybenzoic acid (77 mg, 0.35 mmol, 77%) in 2 mL of DCM was added slowly to a solution of 1-[5-(3,6-dihydro-2H-thiopyran-4-yl)-2-nitro-phenyl]-4-methyl-piperidine (as prepared in the previous step, 50 mg, 0.16 mmol) in 2 mL of DCM at −78° C. under Ar. The mixture was stirred at −78° C. for 0.5 h, and then Warmed to RT. Treated with 2 mL of 10% Na2SO3 solution, the mixture was stirred vigorously for 5 min. The mixture was treated with 30 mL of EtOAc and 10 mL of H2O. The aqueous layer was separated and the organic layer was washed with saturated aq NaHCO3 solution (10 mL), H2O (10 mL) and dried (Na2SO4). Removal of the solvent under reduced pressure followed by flash chromatography of the residue on silica gel (0-2% EtOAc/DCM) gave 35 mg (64%) of the title compound as a yellow oil: 1H-NMR (CDCl3; 400 MHz): δ 7.77 (d, 1H, J=8.6 Hz), 7.00 (d, 1H, J=1.9 Hz), 6.88 (dd, 1H, J=8.6, 1.9 Hz), 5.93 (m, 1H), 3.83 (br s, 2H), 3.24-3.30 (m, 4H), 3.11-3.17 (m, 2H), 2.83 (ddd, 2H, J=12.0, 12.0, 2.3 Hz), 1.72 (dd, 2H, J=12.6, 2.3 Hz), 1.53 (m, 1H), 1.35-1.47 (m, 2H), 1.00 (d, 3H, J=6.3 Hz). Mass spectrum (ESI, m/z): Calcd. for C17H22N2O4S, 351.1 (M+H), found 351.0.

Aufarbeitung

  1. temperatureWarmed to RT
  2. stirringthe mixture was stirred vigorously for 5 min
  3. customThe aqueous layer was separated
  4. washthe organic layer was washed with saturated aq NaHCO3 solution (10 mL), H2O (10 mL)
  5. dry with materialdried (Na2SO4)
  6. customRemoval of the solvent under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-53b145efe5624d79a1c671a3b8eca9cf
Quelldatensatz
uspto-grants-2010_04
Patentnummer
US07705042B2

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