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Triphenylphosphine → ({(1S,2S,4R)-4-azido-2-[(benzyloxy)methyl]cyclopentyl}-oxy)(tert-butyl)dimethylsilane

HRID 447611
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 447611
[CH2:1]([O:8][CH2:9][C@H:10]1[C@@H:14]([O:15][Si:16]([C:19]([CH3:22])([CH3:21])[CH3:20])([CH3:18])[CH3:17])[CH2:13][C@@H:12](O)[CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CCOC(/N=N/C(OCC)=O)=O.C1C=CC(OP(OC2C=CC=CC=2)([N:64]=[N+:65]=[N-:66])=O)=CC=1>C1COCC1>[N:64]([C@H:12]1[CH2:13][C@H:14]([O:15][Si:16]([C:19]([CH3:22])([CH3:21])[CH3:20])([CH3:18])[CH3:17])[C@H:10]([CH2:9][O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH2:11]1)=[N+:65]=[N-:66]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 11776TriphenylphosphineHCID 123414Diphenylphosphoryl azideHCID 5462977Diethyl azodicarboxylateHCID 66798092(1S,3S,4S)-3-[(benzyloxy)methyl]-4-{[tert-butyl(dimethyl)silyl]oxy}cyclopentanol

Produkt 1

HCID 86618712({(1S,2S,4R)-4-azido-2-[(benzyloxy)methyl]cyclopentyl}-oxy)(tert-butyl)dimethylsilane
Ausbeute 63 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of (1S,3S,4S)-3-[(benzyloxy)methyl]-4-{[tert-butyl(dimethyl)-silyl]oxy}cyclopentanol (138.9 mg, 0.0004127 mol) and PPh3 (118 mg, 0.000451 mol) in THF (2.7 mL) at 0° C. was slowly added DEAD (71.1 μL, 0.000451 mol). The reaction was stirred for 5 minutes, then diphenylphosphonic azide (97.4 μL, 0.000452 mol) was added dropwise. The mixture was stirred for one hour. The reaction was partitioned with water and EtOAc. The layers were separated and the aqueous extracted with EtOAc (2×). The combined organics were washed with brine (1×), dried (Na2SO4), filtered, and collected in vacuo. The residue was purified by flash chromatography (0 to 10% EtOAc/hexanes) to obtain 93.5 mg (63%) of the title compound.

Aufarbeitung

  1. customat 0° C.
  2. stirringThe mixture was stirred for one hour
  3. customThe reaction was partitioned with water and EtOAc
  4. customThe layers were separated
  5. extractionthe aqueous extracted with EtOAc (2×)
  6. washThe combined organics were washed with brine (1×)
  7. dry with materialdried (Na2SO4)
  8. filtrationfiltered
  9. customcollected in vacuo
  10. customThe residue was purified by flash chromatography (0 to 10% EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-c99a47b8ec5e4e46a847373595e83ca4
Quelldatensatz
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08481550B2

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