Water → rel-2-Chloro-4-[[(1R,2S,3S)-2,3-dihydroxy-2-methyl-cyclopentyl]amino]-3-methyl-benzonitrile

HRID 245073

Reaktionsgleichung

Reaktionsgleichung von HRID 245073
[NH2:1][C@@H:2]1[CH2:6][CH2:5][C@H:4]([O:7][Si](C(C)(C)C)(C2C=CC=CC=2)C2C=CC=CC=2)[C@@:3]1([CH3:26])[OH:25].[Cl:27][C:28]1[C:35]([CH3:36])=[C:34](F)[CH:33]=[CH:32][C:29]=1[C:30]#[N:31].[F-].C([N+](CCCC)(CCCC)CCCC)CCC.O>C1COCC1>[Cl:27][C:28]1[C:35]([CH3:36])=[C:34]([NH:1][C@@H:2]2[CH2:6][CH2:5][C@H:4]([OH:7])[C@:3]2([OH:25])[CH3:26])[CH:33]=[CH:32][C:29]=1[C:30]#[N:31]

Komponenten

6

Edukt 4

HCID 962WaterHCID 2724141Tetrabutylammonium FluorideHCID 445509712-Chloro-4-fluoro-3-methylbenzonitrileHCID 86693777rel-(1S,2R,5S)-2-Amino-5-(tert-butyl(diphenyl)silyl)oxy-1-methyl-cyclopentanol

Produkt 1

HCID 89510197rel-2-Chloro-4-[[(1R,2S,3S)-2,3-dihydroxy-2-methyl-cyclopentyl]amino]-3-methyl-benzonitrileAusbeute 6,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

The title compound is prepared by essentially following the procedure described in Example 1, using rel-(1S,2R,5 S)-2-amino-5-(tert-butyl(diphenyl)silyl)oxy-1-methyl-cyclopentanol (409 mg, 1.1 mmol, Preparation 43) and 2-chloro-4-fluoro-3-methyl-benzonitrile (142 mg, 0.84 mmol). A 0.2 M solution of the crude product in THF is treated with tetrabutylammonium fluoride (1.3 mL, 1.3 mmol, 1.0 M in THF) and stirred at room temperature for 16 h. The mixture is treated with water, concentrated in vacuo and extracted with EtOAc. The organic extracts are dried over magnesium sulfate, filtered, and concentrated. The resulting material is purified on silica gel (25-100% EtOAc/hexanes) to give the title compound as a pale yellow oil (15 mg, 6%). The relative stereochemistry is determined by NMR studies. 1H-NMR (400 MHz, DMSO-d6) δ 7.47 (d, J=8.8 Hz, 1H), 6.78 (d, J=8.8 Hz, 1H), 5.60-5.57 (m, 1H), 4.98 (d, J=4.2 Hz, 1H), 4.68 (s, 1H), 3.73-3.70 (m, 2H), 2.12 (s, 3H), 2.09-2.09 (m, 2H), 1.69-1.67 (m, 1H), 1.52-1.49 (m, 1H), 1.07 (s, 3H). LC-ES/MS m/z 281 (M+1).

Aufarbeitung

  1. customThe title compound is prepared
  2. concentrationconcentrated in vacuo
  3. extractionextracted with EtOAc
  4. dry with materialThe organic extracts are dried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe resulting material is purified on silica gel (25-100% EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-c02fa6d7240245a68740a379e66b0990
Quelldatensatz
uspto-grants-2014_02
Patentnummer
US08658693B2

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