Five- and Six-Membered Nickelacyclic Carboxylates as Reagents for the Facile Synthesis of δ-Ketocarboxylic Acids, Isocoumarins, and 1,3-Dicarbonyl Derivatives of Benzoic Acid
作者:Dirk Walther、Jens Langer、Martin Gärtner、Helmar Görls
DOI:10.1055/s-2006-942507
日期:2006.8
The nickelacyclic carboxylates A and B reacted with α-halo ketones to form α,β-unsaturated δ-ketocarboxylic acids which were easily converted into pyranones or isocoumarins. In addition, reaction of the nickelacyclic acyl derivative C with α-halo ketones resulted in the formation of substituted 1,3-dicarbonyl compounds with a benzoic acid substituent in the 1-position. In these reactions, many functional groups were tolerated.
镍杂环羧酸盐A和B与α-卤代酮反应,生成了易于转化为吡喃酮或异香豆素的α,β-不饱和δ-酮羧酸。此外,镍杂环酰基衍生物C与α-卤代酮反应,形成了在1-位带有苯甲酸取代基的取代的1,3-二羰基化合物。在这些反应中,许多官能团都得到了容忍。