Diisopropylethylamine → (4S,5S)-4-(3,5-difluorobenzyl)-5-((2R,4S)-1-benzhydryl-4-hydroxypyrrolidin-2-yl)oxazolidin-2-one

HRID 132942

Reaktionsgleichung

Reaktionsgleichung von HRID 132942
[F:1][C:2]1[CH:3]=[C:4]([CH:34]=[C:35]([F:37])[CH:36]=1)[CH2:5][C@H:6]1[C@@H:10]([C@H:11]2[CH2:15][C@@H:14]([O:16]CC=C)[CH2:13][N:12]2[CH:20]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[O:9][C:8](=[O:33])[NH:7]1.OCC1COCCN1C(OC(C)(C)C)=O.C(OC(N1CCOCC1C(O)=O)=O)(C)(C)C.CCN(C(C)C)C(C)C.ClCCOC=O.[BH4-].[Na+]>C1COCC1.CO>[F:37][C:35]1[CH:34]=[C:4]([CH:3]=[C:2]([F:1])[CH:36]=1)[CH2:5][C@H:6]1[C@@H:10]([C@H:11]2[CH2:15][C@H:14]([OH:16])[CH2:13][N:12]2[CH:20]([C:21]2[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=2)[C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[O:9][C:8](=[O:33])[NH:7]1

Komponenten

9

Edukt 6

HCID 81531DiisopropylethylamineHCID 2467482-Chloroethyl formateHCID 27601334-(tert-Butoxycarbonyl)morpholine-3-carboxylic acidHCID 4311764Sodium borohydrideHCID 5058359Tert-butyl 3-(hydroxymethyl)morpholine-4-carboxylateHCID 67316078(4S,5S)-4-(3,5-difluorobenzyl)-5-((2R,4R)-4-(allyloxy)-1-benzhydrylpyrrolidin-2-yl)oxazolidin-2-one

Produkt 1

HCID 58608198(4S,5S)-4-(3,5-difluorobenzyl)-5-((2R,4S)-1-benzhydryl-4-hydroxypyrrolidin-2-yl)oxazolidin-2-oneAusbeute 81 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

Step L (1): tert-Butyl 3-(hydroxymethyl)morpholine-4-carboxylate. To a solution of 4-(tert-butoxycarbonyl)morpholine-3-carboxylic acid (4.7 g, 20.35 mmol) in THF (120 mL) were added Hunig's base (6.6 g, 50.875 mmol). Then chloroethylformate (2.65 g, 24.4 mmol) was added at 0° C. After stirring from 0° C. to rt over 1.5 h, NaBH4 (3.1 g, 81.4 mmol) was added and after 15 min, MeOH (20 mL) was added slowly at 0° C. After stirring at rt for 1 h, THF and MeOH was removed and ethyl acetate (600 mL) was added and the mixture was washed with NaHCO3, H2O, and dried (Na2SO4), and concentrated in vacuo. 3.56 g of product was obtained as the title compound (81% yield): 1H NMR (CDCl3, 500 MHz) δ 1.46 (9H, s), 2.03 (1H, brd s), 3.17 (1H, m), 3.46 (1H, m), 3.56 (1H, m), 3.72-3.86 (4H, m), 3.91 (1H, d, J=10 Hz), 3.99 (1H, brd s).

Aufarbeitung

  1. stirringAfter stirring at rt for 1 h
  2. customTHF and MeOH was removed
  3. additionethyl acetate (600 mL) was added
  4. washthe mixture was washed with NaHCO3, H2O
  5. dry with materialdried (Na2SO4)
  6. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-e5deb229de0b44039d51bc1d394b7c51
Quelldatensatz
uspto-grants-2008_06
Patentnummer
US07388007B2

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