Reaktion #71051

Reaktionsgleichung

2-[4-(2-methyl-[1,3]dioxolan-2-yl)-thiazol-2-ylmethyl]-4-nitro-2H-[1,2,3]triazole

NH4Cl

N2

→

title compound

Ausbeute 92.0%

2-[4-(2-Methyl-[1,3]dioxolan-2-yl)-thiazol-2-ylmethyl]-2H-[1,2,3]triazol-4-ylamine

Ausbeute 92.0%

Lösungsmittel

EtOH

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   FiltrationThe reaction mixture was filtered while hot and the filter cake
2. 2
   Waschenrinsed with EtOH
3. 3
   EinengenThe filtrate was concentrated under reduced pressure
4. 4
   Sonstigethe residue partitioned between CH2Cl2 (10 mL) and aq. 1M NaOH (10 mL)
5. 5
   ExtraktionThe aq. layer was extracted with CH2Cl2 (2×10 mL)
6. 6
   Trocknenextracts were dried over MgSO4
7. 7
   Filtrationfiltered
8. 8
   Sonstigethe solvent removed under reduced pressure

Vorschrift

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), a mixture of 2-[4-(2-methyl-[1,3]dioxolan-2-yl)-thiazol-2-ylmethyl]-4-nitro-2H-[1,2,3]triazole (145 mg, 0.49 mmol), iron powder (83 mg, 1.46 mmol) and NH4Cl (132 mg, 2.44 mmol) in a mixture of EtOH (2.0 mL) and water (1.0 mL) was stirred at 75° C. for 1 h. The reaction mixture was filtered while hot and the filter cake rinsed with EtOH. The filtrate was concentrated under reduced pressure and the residue partitioned between CH2Cl2 (10 mL) and aq. 1M NaOH (10 mL). The aq. layer was extracted with CH2Cl2 (2×10 mL). The combined org. extracts were dried over MgSO4, filtered, and the solvent removed under reduced pressure to give the title compound as a yellow oil (120 mg, 92%). LC-MS-conditions 02: tR=0.68 min, [M+H]+=268.05.

Quelle