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Acetic Acid → 1-{4-[2-(4-Chlorophenoxy)benzylamino]piperidin-1-yl}-3-methylbutan-1-one

HRID 1642251
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1642251
[Cl:1][C:2]1[CH:16]=[CH:15][C:5]([O:6][C:7]2[CH:14]=[CH:13][CH:12]=[CH:11][C:8]=2[CH2:9][NH2:10])=[CH:4][CH:3]=1.[CH3:17][CH:18]([CH3:29])[CH2:19][C:20]([N:22]1[CH2:27][CH2:26][C:25](=O)[CH2:24][CH2:23]1)=[O:21].[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].C(O)(=O)C>ClCCCl>[Cl:1][C:2]1[CH:16]=[CH:15][C:5]([O:6][C:7]2[CH:14]=[CH:13][CH:12]=[CH:11][C:8]=2[CH2:9][NH:10][CH:25]2[CH2:26][CH2:27][N:22]([C:20](=[O:21])[CH2:19][CH:18]([CH3:17])[CH3:29])[CH2:23][CH2:24]2)=[CH:4][CH:3]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 19926667(2-(4-chlorophenoxy)phenyl)MethanaMineHCID 247015181-(3-Methylbutanoyl)piperidin-4-one

Produkt 1

HCID 159524451-{4-[2-(4-Chlorophenoxy)benzylamino]piperidin-1-yl}-3-methylbutan-1-oneAusbeute 66,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 111,2-DichloroethaneLösungsmittel

Versuchsvorschrift

A solution of 2-(4-chlorophenoxy)benzylamine (AMR01076, 100 mg, 0.428 mmol) and 1-(3-methylbutyryl)piperidin-4-one (78.4 mg, 0.428 mmol) in DCE (5 mL) was treated with NaBH(OAc)3 (127 mg, 0.60 mmol) and acetic acid (26 mg, 0.428 mmol). The mixture was stirred at room temperature under a N2 atmosphere until TLC showed that the reactants were consumed (30 min). Then, it was quenched with saturated NaHCO3 solution, the aqueous layer was washed with DCM (2×20 mL), and the combined organic layers were dried (MgSO4), filtered and evaporated to dryness. Column chromatography on silica gel of the crude product using DCM to DCM/MeOH 95:5 gradient as eluent gave 1-{4-[2-(4-chlorophenoxy)benzylamino]piperidin-1-yl}-3-methylbutan-1-one (114 mg, 66%) as a colorless oil. Rf: 0.4 (DCM/MeOH 9:1) LC/MS (APCI) tr=5.36 min, m/z 403.46 (35), 401.44 (M++H, 100). HPLC tr=3.39 min (96.55%) 1H NMR (270 MHz, CDCl3) δ 0.92 (6H, d, J=6.4 Hz, 2CH3), 1.23 (2H, m, CH2), 1.46 (br s, NH), 1.82 (2H, br d, J=12.9 Hz, CH2), 2.05 (1H, hept, J=6.4 Hz, CHMe2), 2.19 (2H, m, CH2), 2.65 (2H, m, CH2), 2.99 (1H, m, CHNH), 3.77 (1H, m, ½CH2), 3.79 (2H, s, CH2NH), 4.40 (1H, br d, J=13.3 Hz, ½CH2), 6.81-6.87 (3H, m, ArH), 7.11 (1H, td, ArH), 7.19-7.25 (3H, m, ArH) and 7.38 (1H, dd, J=7.2, 1.5 Hz, ArH). 13C NMR (270 MHz, CDCl3) δ 22.80 (CH2), 22.90 (CH3), 25.93 (CH), 32.30, 33.15, 40.23, 42.24, 44.44, 45.65 (CH2), 53.87 (CH), 118.93, 119.62, 124.54, 127.94, 128.71, 129.83, 130.58, 131.79, 154.34, 156.37 (ArC), and 170.91 (C═O).

Aufarbeitung

  1. customwere consumed (30 min)
  2. customThen, it was quenched with saturated NaHCO3 solution
  3. washthe aqueous layer was washed with DCM (2×20 mL)
  4. dry with materialthe combined organic layers were dried (MgSO4)
  5. filtrationfiltered
  6. customevaporated to dryness

Quellen und Nachweise

ORD-Eintrag
ord-d6531674bff64c86a60a701770cb573e
Quelldatensatz
uspto-grants-2012_02
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08119627B2

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