Triethylamine → Methyl (1,3-benzothiazol-2-yl)acetate

Participants

Reaction Steps

3.2 mL (30 mmol) 2-Amino-thiophenol are dissolved in 100 mL diethylether and treated with 4.17 mL (1 eq.) triethylamine to yield a suspension, to which 3.21 mL (1 eq.) chlorocarbonyl-acetic methyl ester in 10 mL diethylether is added dropwise within 20 min. The resulting suspension is stirred and additional 2 h at room temperature, and the precipitate removed by filtration. The filtrate is evaporated and column chromatographed (silica gel, ethyl acetate/petroleum ether 1:2) to yield the desired product as a yellowish liquid (5.1 g, 82%).

Provenance & Evidence