4-Toluenesulfonyl chloride → HCID 59201644, Verbindung

HRID 451882Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 451882
[CH2:1]1[C:3]2([CH2:8][CH2:7][C@H:6]([CH2:9][C@H:10]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])[CH2:11][OH:12])[CH2:5][O:4]2)[CH2:2]1.[S:21](Cl)([C:24]1[CH:30]=[CH:29][C:27]([CH3:28])=[CH:26][CH:25]=1)(=[O:23])=[O:22]>N1C=CC=CC=1>[CH3:28][C:27]1[CH:29]=[CH:30][C:24]([S:21]([O:12][CH2:11][C@@H:10]([NH:13][C:14]([O:15][C:16]([CH3:17])([CH3:19])[CH3:18])=[O:20])[CH2:9][C@H:6]2[CH2:7][CH2:8][C:3]3([CH2:2][CH2:1]3)[O:4][CH2:5]2)(=[O:23])=[O:22])=[CH:25][CH:26]=1

Komponenten

4

Edukt 2

HCID 73974-Toluenesulfonyl chlorideHCID 59201744HCID 59201744, Verbindung

Produkt 1

HCID 59201644HCID 59201644, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

The tert-butyl (S)-1-((R)-4-oxaspiro[2.5]oct-6-yl)-3-hydroxypropan-2-ylcarbamate (1.70 g, 5.92 mmol) and tosyl chloride (4.5 g, 23.7 mmol, 4.0 equiv) were dissolved in pyridine (30 mL) and the mixture stirred at room temperature for 17 hr. The pyridine was removed in vacuo and the residue partitioned between EtOAc and 1.0 M HCl. The layers were separated and the organic layer washed with brine, dried over Na2SO4, filtered and evaporated. The (S)-2-(tert-butoxycarbonylamino)-3-((R)-4-oxaspiro[2.5]oct-6-yl)propyl 4-methylbenzenesulfonate was purified by flash chromatography on silica eluting with 0-29% EtOAc in hexanes. The fractions were evaporated and used directly in the next step. MS ESI +ve m/z 464 (M+Na).

Aufarbeitung

  1. customThe pyridine was removed in vacuo
  2. customthe residue partitioned between EtOAc and 1.0 M HCl
  3. customThe layers were separated
  4. washthe organic layer washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. customevaporated
  8. customThe (S)-2-(tert-butoxycarbonylamino)-3-((R)-4-oxaspiro[2.5]oct-6-yl)propyl 4-methylbenzenesulfonate was purified by flash chromatography on silica eluting with 0-29% EtOAc in hexanes
  9. customThe fractions were evaporated

Quellen und Nachweise

ORD-Eintrag
ord-2d761213fc324b38a807358bcf59f86e
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08487108B2

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