Synthesis of 3-aminothieno-(2,3-b)pyridine derivatives. II.
The 3-cyanopyridin-2-thiol and its alkyl derivatives give, with halogen derivatives having an electron attracting group in alpha-position, the 3-aminothieno (2,3-b) pyridine derivatives in high yields. The behaviour of 2-carboethoxy-3-amino derivates and its products of hydrolysis and acetylation are studied.
D003460:Crystallization; D006868:Hydrolysis; D011725:Pyridines / Q000138:chemical synthesis*; D013055:Spectrophotometry, Infrared; D013876:Thiophenes / Q000138:chemical synthesis
D011725:Pyridines; D013876:Thiophenes
Sintesi di derivati della 3-aminotieno (2,3-b) piridina. Nota II