p-Toluenesulfonic acid → tert-Butyl ((S)-1-hydroxy-3-((R)-tetrahydro-2H-pyran-3-yl)propan-2-yl)carbamate

HRID 451975Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 451975
CC1(C)[N:6]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[C@@H:5]([CH2:14][C@H:15]2[CH2:20][CH2:19][CH2:18][O:17][CH2:16]2)[CH2:4][O:3]1.CC1C=CC(S(O)(=O)=O)=CC=1.CC(OC(OC(OC(C)(C)C)=O)=O)(C)C>CO>[OH:3][CH2:4][C@@H:5]([NH:6][C:7](=[O:8])[O:9][C:10]([CH3:12])([CH3:11])[CH3:13])[CH2:14][C@H:15]1[CH2:20][CH2:19][CH2:18][O:17][CH2:16]1

Komponenten

5

Edukt 3

HCID 6101p-Toluenesulfonic acidHCID 90495Di-tert-butyl dicarbonateHCID 58011520(S)-tert-Butyl 2,2-dimethyl-4-(((R)-tetrahydro-2H-pyran-3-yl)methyl)oxazolidine-3-carboxylate

Produkt 1

HCID 58011540tert-Butyl ((S)-1-hydroxy-3-((R)-tetrahydro-2H-pyran-3-yl)propan-2-yl)carbamate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

To a solution of (S)-tert-butyl 2,2-dimethyl-4-(((R)-tetrahydro-2H-pyran-3-yl)methyl)oxazolidine-3-carboxylate (643 mg, 2.15 mmol) in MeOH (10 mL) was added p-TSA (37 mg, 0.22 mmol), then the solution was stirred at rt for 12 hr. TEA (2 mL) was added, followed by Boc2O (46 mg, 0.21 mmol). After the addition the reaction solution was stirred for another 30 min. The organic solvent was removed under reduced pressure to give the crude product tert-butyl (S)-1-hydroxy-3-((R)-tetrahydro-2H-pyran-3-yl)propan-2-ylcarbamate. It was used in the next step without further purification. MS ESI +ve m/z 260 (M+1).

Aufarbeitung

  1. additionAfter the addition the reaction solution
  2. stirringwas stirred for another 30 min
  3. customThe organic solvent was removed under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-a34024d66bb44a6e83445051c59b5e55
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08487108B2

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