Phosphorus oxychloride → HCID 10845511, Verbindung
Reaktionsgleichung
O=[C:2]1[C:7]2[CH:8]=[C:9]([C:11]#[N:12])[S:10][C:6]=2[CH:5]=[CH:4][NH:3]1.P(Cl)(Cl)([Cl:15])=O>>[Cl:15][C:2]1[C:7]2[CH:8]=[C:9]([C:11]#[N:12])[S:10][C:6]=2[CH:5]=[CH:4][N:3]=1Komponenten
3
Versuchsvorschrift
A solution of 4-oxo-4,5-dihydrothieno[3,2-c]pyridine-2-nitrile (500 mg, 2.84 mmol) prepared as in F. Eloy and A. Deryckere, Bull. Soc. Chim. Belg. 1970, 79, 301) and phosphoryl chloride (5 mL) was heated at reflux for 1 hour. The formed red solution was poured onto ice and extracted with methylene chloride (2×150 mL). The dichloromethane solution was dried over anhydrous Na2SO4, filtered, and concentrated. The residue was purified by flash chromatography with 1:10 EtOAc/hexanes to provide the title compound.
Aufarbeitung
- temperatureat reflux for 1 hour
- additionThe formed red solution was poured onto ice
- extractionextracted with methylene chloride (2×150 mL)
- dry with materialThe dichloromethane solution was dried over anhydrous Na2SO4