Valinol → 5-[3,6-Dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-N-[1-(hydroxymethyl)-2-methylpropyl]-1,2-benzisothiazole-3-carboxamide

HRID 48985

Reaktionsgleichung

Reaktionsgleichung von HRID 48985
[NH2:1][CH:2]([CH:5]([CH3:7])[CH3:6])[CH2:3][OH:4].[CH3:8][N:9]1[C:14]([C:15]([F:18])([F:17])[F:16])=[CH:13][C:12](=[O:19])[N:11]([C:20]2[CH:21]=[CH:22][C:23]3[S:27][N:26]=[C:25]([C:28](Cl)=[O:29])[C:24]=3[CH:31]=2)[C:10]1=[O:32]>O1CCCC1.C(OCC)C>[CH3:8][N:9]1[C:14]([C:15]([F:18])([F:17])[F:16])=[CH:13][C:12](=[O:19])[N:11]([C:20]2[CH:21]=[CH:22][C:23]3[S:27][N:26]=[C:25]([C:28]([NH:1][CH:2]([CH2:3][OH:4])[CH:5]([CH3:7])[CH3:6])=[O:29])[C:24]=3[CH:31]=2)[C:10]1=[O:32]

Komponenten

5

Edukt 2

HCID 79019ValinolHCID 113038335-[3,6-Dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-1,2-benzisothiazole-3-carboxylic acid chloride

Produkt 1

HCID 206342735-[3,6-Dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-N-[1-(hydroxymethyl)-2-methylpropyl]-1,2-benzisothiazole-3-carboxamideAusbeute 86,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 3283Diethyl EtherLösungsmittelHCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a solution of 2-amino-3-methyl-1-butanol (1.39 g, 13.5 mmol) in anhydrous tetrahydrofuran at 0° C. is added dropwise a solution of 5-[3,6-Dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-pyrimidinyl]-1,2-benzisothiazole-3-carboxylic acid chloride (2.10 g, 5.39 mmol) in tetrahydrofuran. The resultant mixture is stirred 7.5 hours at ambient temperature, diluted with diethyl ether, washed with 1M aqueous hydrochloric acid, saturated sodium bicarbonate and brine, dried over anhydrous magnesium sulfate and concentrated in vacuo. The residue is chromatographed on silica gel with hexanes-ethyl acetate to afford the title compound as a solid (2.12 g, 86.2%, mp 120° C.) which is identified by NMR spectral analysis.

Aufarbeitung

  1. washwashed with 1M aqueous hydrochloric acid, saturated sodium bicarbonate and brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. concentrationconcentrated in vacuo
  4. customThe residue is chromatographed on silica gel with hexanes-ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-76a77cb533724934a7a7dde2e7182af6
Quelldatensatz
uspto-grants-2004_03
Patentnummer
US06706663B2

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