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Tert-butyl 4-(4-fluorophenyl)-4-(hydroxymethyl)piperidine-1-carboxylate → (+/-)-tert-Butyl 4-((1-(5-chloro-2-((2-(trimethylsilyl)ethoxy)methyl)-2H-indazol-7-yl)ethoxy)methyl)-4-(4-fluorophenyl)piperidine-1-carboxylate

HRID 913887
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 913887
ClC(Cl)(Cl)C(=N)O[CH:5]([C:7]1[C:15]2[C:11](=[CH:12][N:13]([CH2:16][O:17][CH2:18][CH2:19][Si:20]([CH3:23])([CH3:22])[CH3:21])[N:14]=2)[CH:10]=[C:9]([Cl:24])[CH:8]=1)[CH3:6].[F:28][C:29]1[CH:34]=[CH:33][C:32]([C:35]2([CH2:48][OH:49])[CH2:40][CH2:39][N:38]([C:41]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])=[O:42])[CH2:37][CH2:36]2)=[CH:31][CH:30]=1>ClCCl.C1CCCCC1>[Cl:24][C:9]1[CH:8]=[C:7]([CH:5]([O:49][CH2:48][C:35]2([C:32]3[CH:31]=[CH:30][C:29]([F:28])=[CH:34][CH:33]=3)[CH2:36][CH2:37][N:38]([C:41]([O:43][C:44]([CH3:45])([CH3:46])[CH3:47])=[O:42])[CH2:39][CH2:40]2)[CH3:6])[C:15]2[C:11](=[CH:12][N:13]([CH2:16][O:17][CH2:18][CH2:19][Si:20]([CH3:22])([CH3:21])[CH3:23])[N:14]=2)[CH:10]=1
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Komponenten

4

Edukt 2

HCID 19084679Tert-butyl 4-(4-fluorophenyl)-4-(hydroxymethyl)piperidine-1-carboxylateHCID 57546188(+/-)-1-(5-Chloro-2-((2-(trimethylsilyl)ethoxy)methyl)-2H-indazol-7-yl)ethyl 2,2,2-trichloroacetimidate

Produkt 1

HCID 57546145(+/-)-tert-Butyl 4-((1-(5-chloro-2-((2-(trimethylsilyl)ethoxy)methyl)-2H-indazol-7-yl)ethoxy)methyl)-4-(4-fluorophenyl)piperidine-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 21916607
Dichloromethane cyclohexane
Lösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

(±)-1-(5-Chloro-2-((2-(trimethylsilyl)ethoxy)methyl)-2H-indazol-7-yl)ethyl 2,2,2-trichloroacetimidate (1.1 g, 2.33 mmol) and tert-butyl 4-(4-fluorophenyl)-4-(hydroxymethyl)piperidine-1-carboxylate (0.79 g, 2.57 mmol) were combined in a dichloromethane/cyclohexane mixture (1:1, 10 mL) and cooled to 0° C. The reaction was treated with tetrafluoroboric acid-diethyl ether complex (64 μL, 0.47 mmol), stirred at 0° C. for 1 h, quenched by addition of saturated sodium bicarbonate, and diluted with diethyl ether. The layers were separated. The ethereal was washed with water (2×), brine (2×), dried over sodium sulfate, and concentrated. Column chromatography on silica gel (20% ethyl acetate/hexanes) gave 0.81 g (56%) as a clear film. 1H-NMR (CDCl3, 500 MHz) δ 8.00 (s, 1H), 7.49 (d, J=1.8 Hz, 1H), 7.30-7.33 (m, 2H), 7.01-7.05 (m, 2H), 6.77 (m, 1H), 5.62-5.68 (s, 2H), 4.93 (q, J=6.4 Hz, 1H), 3.72 (m, 2H), 3.58-3.61 (m, 2H), 3.33-3.39 (m, 2H), 3.03-3.08 (m, 2H), 2.08-2.22 (m, 2H), 1.87-1.97 (m, 2H), 1.44 (s, 9H), 1.43 (d, J=6.4 Hz, 3H), 0.91-0.92 (m, 2H), 0.05 (s, 9H). Mass spec.: 618.86 (MH)+.

Aufarbeitung

  1. additionThe reaction was treated with tetrafluoroboric acid-diethyl ether complex (64 μL, 0.47 mmol)
  2. customquenched by addition of saturated sodium bicarbonate
  3. additiondiluted with diethyl ether
  4. customThe layers were separated
  5. washThe ethereal was washed with water (2×), brine (2×)
  6. dry with materialdried over sodium sulfate
  7. concentrationconcentrated
  8. customColumn chromatography on silica gel (20% ethyl acetate/hexanes) gave 0.81 g (56%) as a clear film

Quellen und Nachweise

ORD-Eintrag
ord-5360ac0f9fc54674812126238aca631f
Quelldatensatz
uspto-grants-2011_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08026257B2

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