The synthesis of heterocyclic derivatives from pyran-2-ones and hydrazine hydrate. Ammonium cerium(IV) nitrate as an efficient oxidant in pyridazine chemistry
作者:Franc Požgan、Slovenko Polanc、Marijan Kočevar
DOI:10.1016/j.tet.2006.07.061
日期:2006.10
A novel reaction of 3-amino-2H-pyran-2-ones and their fused derivatives with hydrazine hydrate leading to the corresponding pyridazine derivatives is reported. Further oxidation with ammonium cerium(IV) nitrate (CAN, from Cerium(IV) Ammonium Nitrate) yields a collection of pyridazine-3-carboxylates.
据报道3-氨基-2 H-吡喃-2-酮及其稠合衍生物与水合肼的新颖反应导致相应的哒嗪衍生物。用硝酸铈(IV)铵(CAN,来自硝酸铈(IV)铵)进一步氧化,得到哒嗪-3-羧酸盐。