Tetrabutylammonium Fluoride → (9-(2-Fluoro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone

HRID 446430

Reaktionsgleichung

Reaktionsgleichung von HRID 446430
CCCC[N+](CCCC)(CCCC)CCCC.[F-].[Si]([O:26][CH2:27][CH2:28][C:29]1[C:30]([F:57])=[C:31]([CH:54]=[CH:55][CH:56]=1)[CH2:32][N:33]1[CH2:53][CH2:52][C:36]2([O:41][CH2:40][CH2:39][N:38]([C:42]([C:44]3[N:45]=[C:46]([CH:49]([CH3:51])[CH3:50])[S:47][CH:48]=3)=[O:43])[CH2:37]2)[CH2:35][CH2:34]1)(C(C)(C)C)(C)C>C1COCC1>[F:57][C:30]1[C:29]([CH2:28][CH2:27][OH:26])=[CH:56][CH:55]=[CH:54][C:31]=1[CH2:32][N:33]1[CH2:34][CH2:35][C:36]2([O:41][CH2:40][CH2:39][N:38]([C:42]([C:44]3[N:45]=[C:46]([CH:49]([CH3:51])[CH3:50])[S:47][CH:48]=3)=[O:43])[CH2:37]2)[CH2:52][CH2:53]1

Komponenten

4

Edukt 2

HCID 2724141Tetrabutylammonium FluorideHCID 58168600(9-(3-(2-(tert-Butyldimethylsilyloxy)ethyl)-2-fluorobenzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone

Produkt 1

HCID 57989273(9-(2-Fluoro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

TBAF (1M in THF, 13.9 mL) was added to a solution of (9-(3-(2-(tert-butyldimethylsilyloxy)ethyl)-2-fluorobenzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone [Example 7, step a] (5.35 g) in THF (50 mL) and the resulting mixture was stirred for 1 h. The solvent was evaporated and the residue partitioned between ethyl acetate (100 mL) and water (100 mL). The layers were separated and the aqueous phase was extracted with ethyl acetate (2×100 mL). The combined organic phases were washed with brine (100 mL), dried over sodium sulphate, filtered and evaporated. The crude material was purified by flash silica chromatography, elution gradient 4:1 isohexane:ethyl acetate to 100% ethyl acetate to give the subtitled compound as a clear oil. Yield 3.90 g.

Aufarbeitung

  1. customThe solvent was evaporated
  2. customthe residue partitioned between ethyl acetate (100 mL) and water (100 mL)
  3. customThe layers were separated
  4. extractionthe aqueous phase was extracted with ethyl acetate (2×100 mL)
  5. washThe combined organic phases were washed with brine (100 mL)
  6. dry with materialdried over sodium sulphate
  7. filtrationfiltered
  8. customevaporated
  9. customThe crude material was purified by flash silica chromatography, elution gradient 4:1 isohexane

Quellen und Nachweise

ORD-Eintrag
ord-1a7726104f1a4b60a29d995df07f4335
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08476265B2

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