Alkylation of β-diketones through their co(II), co(III) and zn(II) complexes. 1-Bromoadamantane as alkylating agent.
作者:A. González、F. Güell、J. Marquet、M. Moreno-Mañas
DOI:10.1016/s0040-4039(00)89236-9
日期:1985.1
α-(1-adamantyl)-β-diketones are now accessible by the alkylation of Co(II) complexes of β-diketones with 1-bromoadamantane. The intermediacy of adamantyl cation is proposed. Co(II), Co(III) and Zn(II) complexes of pentane-2,4-dione react with alkyl halides precursors of stabilized carbenium ions, to give 3-alkylpentane-2,4-diones.
现在可以通过将β-二酮的Co(II)配合物与1-溴金刚烷进行烷基化来获得α-(1-金刚烷基)-β-二酮。提出了金刚烷基阳离子的中间体。戊烷-2,4-二酮的Co(II),Co(III)和Zn(II)配合物与稳定的碳正离子的烷基卤化物前体反应,生成3-烷基戊烷-2,4-二酮。