Hydrochloric Acid → Ethyl 2-(2-aminoanilino)-6-methylbenzo[b]thiophene-3-carboxylate

Beteiligte Stoffe

Reaktionsschritte

In the same manner as in Starting Material Synthesis Example 4 and using ethyl 2-amino-6-methylbenzo[b]thiophene-3-carboxylate (4.18 g), 2-fluoronitrobenzene (2.5 g) and dimethyl sulfoxide (50 ml), crude crystals (7.5 g) of ethyl 6-methyl-2-(2-nitroanilino)benzo[b]thiophene-3-carboxylate were obtained. Without purification, in the same manner as in Starting Material Synthesis Example 21 and using ethanol (50 ml), 18% hydrochloric acid (70 ml) and tin(II) chlorihe.dihydrate (16 g), ethyl 2-(2-aminoanilino)-6-methylbenzo[b]thiophene-3-carboxylate (3.7 g) was obtained.

Herkunft & Nachweise