Synthesis of some medium- and large-ring cycloalk-2-ene-1,4-diones by intramolecular coupling of αω-bis-diazoketones
作者:Sunanta Kulkowit、M. Anthony McKervey
DOI:10.1039/c39780001069
日期:——
In the presence of Cu(acac)2(Hacac = acetylacetone) someαω-bis-diazoketones couple intramolecularly with loss of nitrogen giving cycloalk-2-ene-1,4-diones; the enediones can be converted into fused ring cyclopentenones by successive treatment with sodium dithionite and sodium hydroxide.
Synthesis of macrocyclic oxo-crown ethers from αω-bis-diazo-ketones and polyethylene glycols
作者:Sunanta Kulkowit、M. Anthony McKervey
DOI:10.1039/c39810000616
日期:——
Derivatives of macrocyclic crown ethers in which two ethereal oxygen atoms have been replaced by carbonyl groups have been synthesised by the bis-(acetylacetonato) copper-catalysed cyclisation of αω-bis-diazo-ketones with polyethyleneglycols; three such oxo-crownethers complex with potassium ion in chloroform.
Lewis acid promoted reactions of diazocarbonyl compounds. 3. Synthesis of oxazoles from nitriles through intermediate .beta.-imidatoalkenediazonium salts
作者:Michael P. Doyle、William E. Buhro、James G. Davidson、Robert C. Elliott、James W. Hoekstra、Mark Oppenhuizen