Aluminium lithium hydride → 2,6-Di-tert-butyl-4-[4-(2-hydroxy-ethyl)-1-(5-hydroxymethyl-1-methyl-1H-pyrrole-2-sulfonyl)-piperidin-4-ylsulfanyl]-phenol

HRID 599467Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 599467
C[O:2][C:3]([C:5]1[N:6]([CH3:41])[C:7]([S:10]([N:13]2[CH2:18][CH2:17][C:16]([CH2:35][CH2:36][O:37]C(=O)C)([S:19][C:20]3[CH:25]=[C:24]([C:26]([CH3:29])([CH3:28])[CH3:27])[C:23]([OH:30])=[C:22]([C:31]([CH3:34])([CH3:33])[CH3:32])[CH:21]=3)[CH2:15][CH2:14]2)(=[O:12])=[O:11])=[CH:8][CH:9]=1)=O.[H-].[H-].[H-].[H-].[Li+].[Al+3]>C1COCC1>[C:26]([C:24]1[CH:25]=[C:20]([S:19][C:16]2([CH2:35][CH2:36][OH:37])[CH2:17][CH2:18][N:13]([S:10]([C:7]3[N:6]([CH3:41])[C:5]([CH2:3][OH:2])=[CH:9][CH:8]=3)(=[O:12])=[O:11])[CH2:14][CH2:15]2)[CH:21]=[C:22]([C:31]([CH3:34])([CH3:33])[CH3:32])[C:23]=1[OH:30])([CH3:29])([CH3:28])[CH3:27]

Komponenten

4

Edukt 2

HCID 21226445Aluminium lithium hydrideHCID 86635425HCID 86635425, Verbindung

Produkt 1

HCID 250223172,6-Di-tert-butyl-4-[4-(2-hydroxy-ethyl)-1-(5-hydroxymethyl-1-methyl-1H-pyrrole-2-sulfonyl)-piperidin-4-ylsulfanyl]-phenolAusbeute 75,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To 5-[4-(2-acetoxy-ethyl)-4-(3,5-di-tert-butyl-4-hydroxy-phenylsulfanyl)-piperidine-1-sulfonyl]-1-methyl-1H-pyrrole-2-carboxylic acid methyl ester (Ex. 1d, 460 mg, 0.75 mmol) in 4 mL of THF was added dropwise 3 mL of a 1 M LiAlH4 in THF. The mixture was stirred for 2 h and then quenched with saturated aqueous NaH2PO4 (20 mL). It was diluted with Ethyl acetate (30 mL), stirred for 10 min, and then let sit for 1 h. The layers were separated and the aqueous layer was extracted with Ethyl acetate (20 mL). The combined organic layers were washed with water (50 mL), dried over Na2SO4, and concentrated under reduced pressure. The crude product was chromatographed with 10-85% Ethyl acetate/hexanes to afford the title compound as a white solid (305 mg, 75%), mp 126-127° C. 1H NMR (400 MHz, CD3OD): δ 7.26 (d, J=2.0 Hz, 1H), 7.15 (s, 2H), 6.34 (d, J=2.0 Hz, 1H), 4.57 (s, 2H), 3.88 (t, J=7.2 Hz, 2H), 3.76 (s, 3H), 3.26 (1H), 3.02 (td, J=7.2, 2.4 Hz, 2H), 1.75-1.68 (m, 2H), 1.64-1.58 (m, 4H), 1.39 (s, 3H); ESI/CI-MS m/z 539 ([M+H]+), 537 ([M−H]−). Anal. calcd for C27H42N2O5S2: C, 60.19; H, 7.86; N, 5.20. Found: C, 60.28, H, 7.93; N, 5.13.

Aufarbeitung

  1. customquenched with saturated aqueous NaH2PO4 (20 mL)
  2. additionIt was diluted with Ethyl acetate (30 mL)
  3. stirringstirred for 10 min
  4. waitlet sit for 1 h
  5. customThe layers were separated
  6. extractionthe aqueous layer was extracted with Ethyl acetate (20 mL)
  7. washThe combined organic layers were washed with water (50 mL)
  8. dry with materialdried over Na2SO4
  9. concentrationconcentrated under reduced pressure
  10. customThe crude product was chromatographed with 10-85% Ethyl acetate/hexanes

Quellen und Nachweise

ORD-Eintrag
ord-806341fca7cb46e4814589a865912e88
Quelldatensatz
uspto-grants-2011_03
Patentnummer
US07897776B2

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