Abstract This paper describes the preparation and hydrolysis of 2-cyano and 3-cyano derivatives of furo [3, 2-b]-, furo [2, 3-c]-and furo [3, 2-c] pyridine. Treatment of furopyridines 1a, 1b and 1c with n-butyllithium in hexane-tetrahydrofuran at-70 and subsequent addition of N, N-dimethylformamide yielded 2-formyl derivatives 2a, 2b and 2c. Dehydration of the oximes 4a, 4b and 4c of 2a, 2b and 2c gave 2-cyano compounds 5a, 5b and 5c, which ...
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