2-Chloro-1,1,1-triethoxyethane → 2-(Chloromethyl)-5-(trifluoromethyl)-1,3-benzothiazole

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 2-amino-4-trifluoromethylthiophenol hydrochloride (30.0 g) in ethanol (125 ml) was added 2-chloro-1,1,1-triethoxyethane (31.0 g). The mixture was heated for 1 hour at 60° C. The solution was concentrated to remove excess ethanol and the resulting material was extracted with ether (500 ml). The organic extract was washed successively with 10% HCl (20 ml), water (100 ml), 10% sodium bicarbonate solution and water (100 ml), and then evaporated to obtain an amber colored oil, which crystallized upon standing at room temperature (28.9 g; m.p. 52° C).

Herkunft & Nachweise