Triphenylphosphine → Tert-butyl 4-(6-(1-(4-(trifluoromethyl)phenyl)piperidin-4-yloxy)benzo[d]oxazole-2-carboxamido)piperidine-1-carboxylate

HRID 530933Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 530933
[OH:1][C:2]1[CH:26]=[CH:25][C:5]2[N:6]=[C:7]([C:9]([NH:11][CH:12]3[CH2:17][CH2:16][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:14][CH2:13]3)=[O:10])[O:8][C:4]=2[CH:3]=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O.[F:41][C:42]([F:57])([F:56])[C:43]1[CH:48]=[CH:47][C:46]([N:49]2[CH2:54][CH2:53][CH:52](O)[CH2:51][CH2:50]2)=[CH:45][CH:44]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1(C)C=CC=CC=1>[F:57][C:42]([F:41])([F:56])[C:43]1[CH:44]=[CH:45][C:46]([N:49]2[CH2:54][CH2:53][CH:52]([O:1][C:2]3[CH:26]=[CH:25][C:5]4[N:6]=[C:7]([C:9]([NH:11][CH:12]5[CH2:13][CH2:14][N:15]([C:18]([O:20][C:21]([CH3:22])([CH3:23])[CH3:24])=[O:19])[CH2:16][CH2:17]5)=[O:10])[O:8][C:4]=4[CH:3]=3)[CH2:51][CH2:50]2)=[CH:47][CH:48]=1

Komponenten

6

Edukt 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 220976741-[4-(Trifluoromethyl)phenyl]piperidin-4-olHCID 57951081Tert-butyl 4-(6-hydroxybenzo[d]oxazole-2-carboxamido)piperidine-1-carboxylate

Produkt 1

HCID 57951056Tert-butyl 4-(6-(1-(4-(trifluoromethyl)phenyl)piperidin-4-yloxy)benzo[d]oxazole-2-carboxamido)piperidine-1-carboxylateAusbeute 66,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

To a stirred solution of tert-butyl 4-(6-hydroxybenzo[d]oxazole-2-carboxamido)piperidine-1-carboxylate (0.15 g, 0.41 mmol) in toluene (4 mL) at room temperature was added diisopropyl azodicarboxylate (0.1 g, 0.49 mmol), 1-(4-(trifluoromethyl)phenyl)piperidin-4-ol (0.1 g, 0.41 mmol), and triphenylphosphine (0.13 g, 0.49 mmol). The mixture was stirred at room temperature overnight and then concentrated under reduced pressure. The residue obtained was purified by flash chromatography (silica gel, ethyl acetate/hexanes=2/3) to afford tert-butyl 4-(6-(1-(4-(trifluoromethyl)phenyl)piperidin-4-yloxy)benzo[d]oxazole-2-carboxamido)piperidine-1-carboxylate (compound 1) as a off-white solid (0.16 g, 66%). 1H-NMR (CDCl3, 300 MHz): δ 7.65 (m, 1H), 7.48 (m, 2H), 7.15 (m, 1H), 7.05 (m, 2H), 6.96 (m, 2H), 4.56 (m, 1H), 4.12 (m, 3H), 3.60 (m, 2H), 3.28 (m, 2H), 2.93 (m, 2H), 2.04 (m, 8H), 1.47 (s, 9H) ppm; MS (ESI): 589.6 (M+1).

Aufarbeitung

  1. concentrationconcentrated under reduced pressure
  2. customThe residue obtained
  3. customwas purified by flash chromatography (silica gel, ethyl acetate/hexanes=2/3)

Quellen und Nachweise

ORD-Eintrag
ord-11694ed650374055be5f3f7727dade31
Quelldatensatz
uspto-grants-2016_05
Patentnummer
US09353111B2

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