Syntheses and NMR, MS and X-ray investig
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Zsuzsanna Cs. Gyarmati; Péter Csomós; Gábor Bernáth; Pauliina Valtamo; Henri Kiv
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Article
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2004
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Journal of Heterocyclic Chemistry
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English
⚖ 481 KB
👁 1 views
## Abstract The reactions of ethyl 5‐oxotricyclo[4.3.1.1^3,8^]undecane‐4‐carboxylate (2) with methyl‐substituted 2‐aminopyridines in polyphosphoric acid (PPA) gave two products, linearly‐condensed pyridopyrimidinones **4a‐c** and 2‐pyridylcarboxamides **5a‐c**, whereas the reactions with amino, hyd