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Water → HCID 59201345, Verbindung

HRID 451687
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 451687
[F:1][C:2]1[C:7]([F:8])=[CH:6][CH:5]=[CH:4][C:3]=1[CH:9]([O:23][CH2:24][CH2:25][OH:26])[C@@H:10]1[CH2:15][CH2:14][CH2:13][N:12]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:11]1.CCN(CC)CC.[CH3:34][S:35](Cl)(=[O:37])=[O:36].O>C(Cl)Cl>[F:1][C:2]1[C:7]([F:8])=[CH:6][CH:5]=[CH:4][C:3]=1[CH:9]([O:23][CH2:24][CH2:25][O:26][S:35]([CH3:34])(=[O:37])=[O:36])[C@@H:10]1[CH2:15][CH2:14][CH2:13][N:12]([C:16]([O:18][C:19]([CH3:20])([CH3:21])[CH3:22])=[O:17])[CH2:11]1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 962WaterHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 59201577HCID 59201577, Verbindung

Produkt 1

HCID 59201345HCID 59201345, VerbindungAusbeute 99 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344
Dichloromethane
Lösungsmittel
2×

Versuchsvorschrift

To a solution of (3R)-tert-butyl 3-((2,3-difluorophenyl)(2-hydroxyethoxy)methyl)piperidine-1-carboxylate in dry CH2Cl2 (50 mL) was added Et3N (5.2 mL, 37.6 mmol) at −5-0° C. Then a solution of MsCl (1.3 g, 11.3 mmol) in dry CH2Cl2 (20 mL) was added dropwise at the same temperature. After addition, the reaction was allowed to gradually warm to rt. Upon completion of the reaction, 50 mL of water was added, the aqueous layer was extracted with CH2Cl2, the combined organic layers were washed with 10% citric acid, sat. NaHCO3 and brine, then dried over Na2SO4, filtered and concentrated to give (3R)-tert-butyl 3-((2,3-difluorophenyl)(2-(methylsulfonyloxy)ethoxy)methyl)piperidine-1-carboxylate (4.2 g, 99%), which was used in the next step without purification. 1H NMR (CDCl3, 400 MHz) δ 7.12 (m, 3H), 4.52 (q, 1H), 4.31 (m, 3H), 4.09 (t, 1H), 3.57 (m, 2H), 3.06 (d, 3H), 2.70 (m, 2H), 1.93 (m, 2H), 1.44 (d, 9H).

Aufarbeitung

  1. additionAfter addition
  2. additionwas added
  3. extractionthe aqueous layer was extracted with CH2Cl2
  4. washthe combined organic layers were washed with 10% citric acid, sat. NaHCO3 and brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-0e14c32fd9cf435aa43ce99bc315faba
Quelldatensatz
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08487108B2

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