Triacetoxyperiodinane → (2S,3S)-tert-Butyl 3-((tert-butyldimethylsilyl)oxy)-2-formylpyrrolidine-1-carboxylate

HRID 501640Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 501640
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([O:13][Si:14]([C:17]([CH3:20])([CH3:19])[CH3:18])([CH3:16])[CH3:15])[C@H:9]1[CH2:21][OH:22])=[O:7])([CH3:4])([CH3:3])[CH3:2].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([O:13][Si:14]([C:17]([CH3:20])([CH3:19])[CH3:18])([CH3:16])[CH3:15])[C@H:9]1[CH:21]=[O:22])=[O:7])([CH3:4])([CH3:3])[CH3:2]

Komponenten

4

Edukt 2

HCID 159087TriacetoxyperiodinaneHCID 109256021,1-Dimethylethyl (2R,3S)-3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2-(hydroxymethyl)-1-pyrrolidinecarboxylate

Produkt 1

HCID 16731848(2S,3S)-tert-Butyl 3-((tert-butyldimethylsilyl)oxy)-2-formylpyrrolidine-1-carboxylateAusbeute 94,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To (2R,3S)-3-(tert-butyl-dimethylsilanyloxy)-2-hydroxymethyl pyrrolidine-1-carboxylic acid tert-butyl ester (61A) (9.85 g, 29.7 mmol) in CH2Cl2 (200 mL) at 0° C. was added Dess-Martin periodinane. The ice bath was removed and the reaction was warmed to rt. After 2 h, saturated aqueous Na2S2O3 and NaHCO3 (ca. 100 mL each) were added and the reaction mixture was stirred vigorously for 0.5 h. The layers were separated, and the organic layer was washed with a mixture of saturated aqueous Na2S2O3 and saturated aqueous NaHCO3 followed by brine, dried (MgSO4), and was then filtered and concentrated to obtain the title compound (9.23 g) as a yellow oil.

Aufarbeitung

  1. customThe ice bath was removed
  2. additionsaturated aqueous Na2S2O3 and NaHCO3 (ca. 100 mL each) were added
  3. customThe layers were separated
  4. washthe organic layer was washed with a mixture of saturated aqueous Na2S2O3 and saturated aqueous NaHCO3
  5. dry with materialdried (MgSO4)
  6. filtrationwas then filtered
  7. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-1cf5f9be02084d5c84dce388f54c2fc7
Quelldatensatz
uspto-grants-2010_08
Patentnummer
US07772267B2

Notizen zur Reaktion

Wird geladen…