ChemInform Abstract: Amalgam (Na-Hg) Reduction of Some 4-Substituted-2-amino-3,5-dicyano-6-methoxypyridines. New Evidence Regarding the Oxydation Step in Their Synthesis.

Amalgam (Na.Hg) reduction of some 4-Subs

Amalgam (Na.Hg) reduction of some 4-Substituted-2-amino-3,5-dicyano-6-methoxypyridines. New evidence regarding the oxidation step in their synthesis

✍ LuÍS Fuentes; Ma Jesús Lorenzo; César Márquez; Mikhail Galakhov 📂 Article 📅 1999 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 243 KB

## Abstract The amalgam (Na.Hg) reduction of some 4‐substituted‐2‐amino‐3,5‐dicyano‐6‐methoxypyridines 3 results in the formation, in high yields of 3,4‐dihydropyridines 2. Highfield ^1^H and ^13^C nmr studies provide unambiguous support for the structures proposed. The synthesis of C‐4 deuterium l