Diethyl Ether → 2-Sulfanylidene-1,3-thiazolidine-3-carbonyl chloride

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A solution of 2-mercaptothiazoline (2.0 g, 0.0168 mmol) and Et3N (2.9 ml, 0.021 mol) in THF (30 ml) was added dropwise to a solution of phosgene (2.37 g, 0.0239 mol) in toluene (12 ml) at 5° C. for 7 min. The mixture was stirred at 5° C. for 5 min and then filtered to remove the precipitate. The filtrate was evaporated in vacuo to give a crystalline residue. To the residue was added ether (10 ml) and the ether was evaporated in vacuo. This operation was repeated twice. 2-Thioxo-3-thiazolidinecarbonyl chloride (2,0 g) was obtained as a solid. 65.5% yield. IR (Nujol).

Herkunft & Nachweise