Formal metal-free γ-arylation of 1,3-dicarbonyl compounds <i>via</i> an isomerisation/1,4-addition/[3,3]-sigmatropic rearrangement sequence
作者:Shi-Chao Lu、Fu-Qiang Wen、Xi-Dong Guan
DOI:10.1039/d1gc02856a
日期:——
metal-free redox arylation of alkynes with sulfoxides has been developed to provide unconventional access to diverse γ-arylated 1,3-dicarbonyl compounds in an atom-economical manner. Mechanistic studies suggest that a conjugated allenone intermediate was generated in situ, which solves the problem of reactivity and regioselectivity of unsymmetrical dialkyl-substituted internalalkynes and enables the functionalisation
1-Methyl-2-(phenyl-oxymethyl)-5-nitro-imidazoles and process for their
申请人:Hoechst Aktiengesellschaft
公开号:US04042705A1
公开(公告)日:1977-08-16
1-Methyl-2-(phenyl-oxymethyl)-5-nitro-imidazoles and a process for preparing them are disclosed. The compounds of the invention are suitable for the treatment of protozoal diseases caused in humans and animals and of bacteria and fungi.