Reaktion #45467

Reaktionsgleichung

3-bromo-4-chlorofuro[3,2-c]pyridine

ammonium hydroxide

→

title compound

Ausbeute 71.0%

3-Bromofuro[3,2-c]pyridin-4-amine

Ausbeute 71.0%

Lösungsmittel

dioxane

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe solvent was removed in vacuo and water (200 mL)
2. 2
   workup.ADDITIONwas added to the residue
3. 3
   Extraktionextracted with ethyl acetate (5×100 mL)
4. 4
   TrocknenThe combined organic layers were dried over anhydrous magnesium sulfate
5. 5
   Sonstigethe solvent was removed in vacuo

Vorschrift

A mixture of 3-bromo-4-chlorofuro[3,2-c]pyridine (7.0 g, 22 mmol), 38 wt % aqueous ammonium hydroxide (75 mL) and dioxane (75 mL) in a Parr mini-reactor was stirred at 150° C. for two days. The solvent was removed in vacuo and water (200 mL) was added to the residue. The mixture was adjusted to pH 12 with 2N NaOH (aq) extracted with ethyl acetate (5×100 mL). The combined organic layers were dried over anhydrous magnesium sulfate and the solvent was removed in vacuo to give the title compound (4.6 g, 71%). 1H NMR (DMSO-d6, 400 MHz) 8.13 (s, 1H), 7.85 (d, 1H), 6.92 (d, 1H), 6.17-6.27 (bs, 2H); RP-HPLC (Conditions d) Rt 8.02 min.; MS: MH+ 213, 215.

Quelle