New Methods for the Synthesis of 3‐Amino‐6,7‐Dihydro‐5H‐Cyclopenta[c]Pyridine‐4‐Carbonitriles and Cyclopenta[d]Pyrazolo[3,4‐b]Pyridines via a Smiles‐type Rearrangement |
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| Abstract: | By reaction with sodium ethoxide and as a function of their structures, 2‐[(1‐alkyl(aryl)‐4‐cyano‐6,7‐dihydro‐5H‐cyclopenta[c ]pyridin‐3‐yl)oxy]acetamides 11 gave 1‐amino‐5‐alkyl(aryl)‐7,8‐dihydro‐6H‐cyclopenta[d ]furo[2,3‐b ]pyridine‐2‐carboxamides 10 and/or 1‐alkyl(aryl)‐3‐amino‐6,7‐dihydro‐5H‐cyclopenta[c ]pyridine‐4‐carbonitriles 12 . |
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