Regioselective Synthesis of 5-Ylidenepyrrol-2(5H)-ones by Reaction of Transition Metal-Coordinated Bis(imidoyl) Chlorides with Carbon Nucleophiles
摘要:
A regioselective transition metal mediated domino reaction of carbon nucleophiles with oxalic acid-bis(imidoyl)chlorides is reported. This reaction provides a convenient access to E-configured 5-ylidenepyrrol-2(5H)-ones. Without the presence of cobalt(II) or nickel(II) salts, open-chained products were obtained. The regioselective cyclization is controlled by the coordination of the nitrogen atoms of the 1,4-diazadiene system to the transition metal.
Regioselective Synthesis of 5-Ylidenepyrrol-2(5<i>H</i>)-ones by Reaction of Transition Metal-Coordinated Bis(imidoyl) Chlorides with Carbon Nucleophiles
A regioselective transition metal mediated domino reaction of carbon nucleophiles with oxalic acid-bis(imidoyl)chlorides is reported. This reaction provides a convenient access to E-configured 5-ylidenepyrrol-2(5H)-ones. Without the presence of cobalt(II) or nickel(II) salts, open-chained products were obtained. The regioselective cyclization is controlled by the coordination of the nitrogen atoms of the 1,4-diazadiene system to the transition metal.
A new and convenient synthesis of α-tetramic acid amides via a cobalt(II)-mediated reaction cascade
A novel cobalt(II)-mediated domino reaction of carbon nucleophiles with 1a-d has been developed. The resulting cyclization regioselectively yields functionalized α-tetramic acidamides.