(3R,4S,5R,6R)-3,4,5-Tris(benzyloxy)-6-((benzyloxy)methyl)oxan-2-one → HCID 57684684, Verbindung

HRID 2403722Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2403722
Br[C:2]1[CH:7]=[CH:6][C:5]([Cl:8])=[C:4]([CH2:9][C:10]2[CH:15]=[CH:14][C:13]([CH:16]=[CH2:17])=[CH:12][CH:11]=2)[CH:3]=1.[Li]CCCC.[CH2:23]([O:30][C@@H:31]1[C@@H:36]([O:37][CH2:38][C:39]2[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=2)[C@H:35]([O:45][CH2:46][C:47]2[CH:52]=[CH:51][CH:50]=[CH:49][CH:48]=2)[C@@H:34]([CH2:53][O:54][CH2:55][C:56]2[CH:61]=[CH:60][CH:59]=[CH:58][CH:57]=2)[O:33][C:32]1=[O:62])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>C1(C)C=CC=CC=1.C1COCC1.C1(C)C=CC=CC=1>[CH2:23]([O:30][C@@H:31]1[C@@H:36]([O:37][CH2:38][C:39]2[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=2)[C@H:35]([O:45][CH2:46][C:47]2[CH:48]=[CH:49][CH:50]=[CH:51][CH:52]=2)[C@@H:34]([CH2:53][O:54][CH2:55][C:56]2[CH:57]=[CH:58][CH:59]=[CH:60][CH:61]=2)[O:33][C:32]1([C:2]1[CH:7]=[CH:6][C:5]([Cl:8])=[C:4]([CH2:9][C:10]2[CH:15]=[CH:14][C:13]([CH:16]=[CH2:17])=[CH:12][CH:11]=2)[CH:3]=1)[OH:62])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1

Komponenten

6

Edukt 3

HCID 10907626(3R,4S,5R,6R)-3,4,5-Tris(benzyloxy)-6-((benzyloxy)methyl)oxan-2-oneHCID 59557741HCID 59557741, VerbindungHCID 178418339Butyllithium

Produkt 1

HCID 57684684HCID 57684684, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 1140TolueneLösungsmittelHCID 22635083Tetrahydrofuran tolueneLösungsmittel

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

To a solution of 4-bromo-1-chloro-2-(4-vinylbenzyl)benzene (intermediate AM) (215 mg) in toluene:THF (2:1) (3 mL) at −78° C. was added n-BuLi (0.34 mL, 2.5 M in hexane) dropwise. After 45 min, the above mixture was added dropwise into a pre-cooled (−78° C.) solution of (3R,4S,5R,6R)-3,4,5-tris(benzyloxy)-6-(benzyloxymethyl)tetrahydro-2H-pyran-2-one (453 mg) in toluene (3 mL). After being stirred for 2.5 h at −78° C., the reaction mixture was quenched by saturated NH4Cl and diluted with ethyl acetate. The organic layer was separated, washed with brine and dried over Na2SO4. Concentration gave the crude product which was purified by chromatography to provide intermediate AN (712 mg) as an oil.

Aufarbeitung

  1. additionthe above mixture was added dropwise into
  2. customthe reaction mixture was quenched by saturated NH4Cl
  3. additiondiluted with ethyl acetate
  4. customThe organic layer was separated
  5. washwashed with brine
  6. dry with materialdried over Na2SO4
  7. concentrationConcentration

Quellen und Nachweise

ORD-Eintrag
ord-b5e65b31588d46d3bfd25fc32a8d50ff
Quelldatensatz
uspto-grants-2014_08
Patentnummer
US08802637B2

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