Ethanol, 2-amino-, 1-nitrate, nitrate (1:1) → N-cyano-N'-(2-nitroxyethyl)-2-pyridinecarboximidamide

Methyl N-cyano-2-pyridinecarboximidate (0.50 g, 3.1 mmol) was dissolved in methanol (5 ml), 2-nitroxyethylamine nitrate (0.57 g, 3.4 mmol) was added, and sodium methoxide (0.18 g, 3.4 mmol) was further added gradually. The mixture was stirred at room temperature for 10 minutes. After the reaction was completed, the reaction solution was concentrated under reduced pressure, and the residue thus obtained was extracted with dichloromethane (50 ml×3). The dichloromethane layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The concentrated residue was crystallized from dichloromethane-diethyl ether to give the title compound (0.44 g, 0.20 mmol, yield: 63%) as colorless needles.

1. concentrationthe reaction solution was concentrated under reduced pressure
2. customthe residue thus obtained
3. extractionwas extracted with dichloromethane (50 ml×3)
4. dry with materialThe dichloromethane layer was dried over anhydrous sodium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe concentrated residue was crystallized from dichloromethane-diethyl ether

ORD-Eintrag

ord-22f82108d5b148e989178e388a296ea0

Quelldatensatz

uspto-grants-1992_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05166347