2-Substituted nitrones and isomeric hydroxylamines – obtained via aluminium amalgam reduction of nitro nitriles and ketones—a new access to convenient intermediates for nitroso carbonyl compounds preparation
作者:Karol Grela、Leszek Konopski
DOI:10.1016/j.tet.2010.03.023
日期:2010.5
Substituted five-membered cyclic nitrones (pyrroline N-oxides) have been obtained in good to high yields from tertiary γ-nitro ketones and nitriles employing aluminium amalgam as a reducing agent in moist diethyl ether or THF. Attempts to obtain cyclic amino nitrones from α- or β-nitro nitriles failed and only the corresponding hydroxylamines have been isolated. Both nitrones and hydroxylamines have
使用铝汞齐作为湿二乙醚或THF的还原剂,可以从叔γ-硝基酮和腈中以高收率获得高收率的五元取代环环状硝基环(吡咯啉N-氧化物)。从α-或β-硝基腈获得环状氨基硝酮的尝试失败了,仅分离了相应的羟胺。硝酮和羟胺都已用于合成叔C-亚硝基腈或酮。