[EN] COMPOUND CONTAINING 1,3-DIKETONE LIGAND AND APPLICATION THEREOF, AND ORGANIC ELECTROLUMINESCENT DEVICE<br/>[FR] COMPOSÉ CONTENANT UN LIGAND 1,3-DICÉTONE ET SON UTILISATION, ET DISPOSITIF ÉLECTROLUMINESCENT ORGANIQUE<br/>[ZH] 一种含1,3-二酮配体的化合物及其应用、一种有机致电发光器件
Treatment of the diazo diones 1a-i with a catalytic amount of titanium(IV) chloride furnished regioselectively the bicyclo[n.m.0]alkanediones 3a-i in very good yields.
Synthetic scope of the triethyloxonium ion catalyzed homologation of ketones with diazoacetic esters