Ruthenium-catalyzed transfer-hydrogenative cyclization of 1,6-diynes with hantzsch 1,4-dihydropyridine as a H2 surrogate

Article abstract of DOI:10.1002/chem.201301846

The transfer-hydrogenative cyclization of 1,6-diynes with Hantzsch 1,4-dihydropyridine as a H₂ surrogate was performed in the presence of a cationic ruthenium catalyst of the type [CpRu(MeCN)₃PF ₆]. Exocyclic 1,3-dienes or their 1,4-hydrogenation products, cycloalkenes, were selectively obtained, depending on the substrate structure and the reaction conditions. Copyright