锰(Ⅲ)或铈(Ⅳ)引发下β-二羰基化合物的芳基化反应(Ⅱ)

MANGANESE(m) AND CERIUM(IV) INDUCED ARYLATION OF β-DICARBONYL COMPOUNDS

在Mn(OAc)_3-H_3PO_4作用下,乙酰丙酮和稠环芳烃发生反应,生成3-芳基-2,4-戊二酮。反应可能通过·CH(COCH_3)_2自由基进行的。(NH_4)_2Ce(NO_3)_6也能引起这种反应。乙酰乙酰胺及其N-甲基衍生物在Mn(OAc)_3作用下,也能发生芳基化反应。

In the presence of Mn(OAc)3-H3PO4, treatment of acctoacetone with aromatic hydrocarbons produced arylacetoacetoncs by means of homolysis involving the CH3COC HCOCH3 radical. The arylation could be carried out by (NH4)3Ce(NO3)6. Acetoacetamide and it's N-methyl derivatives could also take place this reaction promoted by Mn(OAc)3.