Water → (1-Methyl-1H-indazol-6-yl)methanol

HRID 878556

Reaktionsgleichung

Reaktionsgleichung von HRID 878556
[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][CH:7]=[C:8]([C:11](OC)=[O:12])[CH:9]=2)[CH:4]=[N:3]1.[H-].[H-].[H-].[H-].[Li+].[Al+3].O>C1COCC1>[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][CH:7]=[C:8]([CH2:11][OH:12])[CH:9]=2)[CH:4]=[N:3]1

Komponenten

5

Edukt 3

HCID 962WaterHCID 21226445Aluminium lithium hydrideHCID 22598983Methyl 1-methyl-1H-indazole-6-carboxylate

Produkt 1

HCID 44119265(1-Methyl-1H-indazol-6-yl)methanolAusbeute 97,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

A solution of methyl 1-methyl-1H-indazole-6-carboxylate (230 mg, 1.21 mmol, PREPARATION 4) in anhydrous THF (4 mL) was cooled to 0° C., LiAlH4 (92 mg, 2.42 mmol) was added in portions below 0° C., and the mixture was then stirred at 0° C. for 1.5 h, added water:10% NaOH: water=0.2 mL: 0.2 mL: 0.6 mL carefully, filtered, and the filtrate was concentrated and purified by silica gel flash column to give 192 mg of crude product which was used directly for next step (98%). [M+H] Calc'd for C9H10N2O, 163; Found, 163.

Aufarbeitung

  1. filtration10% NaOH: water=0.2 mL: 0.2 mL: 0.6 mL carefully, filtered
  2. concentrationthe filtrate was concentrated
  3. custompurified by silica gel flash column

Quellen und Nachweise

ORD-Eintrag
ord-72151192a6564b58bcad3686ca25a30b
Quelldatensatz
uspto-grants-2015_03
Patentnummer
US08987461B2

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