Metal-Free Csp3–N Bond Cleavage of Amides Using tert-Butyl Hydroperoxide as Oxidant
作者:Hu Cai、Shengmei Guo、Zheng Zhu、Lin Lu、Wenbiao Zhang、Jiuhan Gong
DOI:10.1055/s-0034-1379879
日期:——
A mild and efficient protocol for the metal-free C-N bond-cleavage of amides has been developed. The methodology employs iodine as a catalyst to cleave the C(Me)-N bond of dimethylformamide or dimethylacetamide, providing novel access to methylene-bridged bis-1,3-dicarbonyl compounds instead of enol carbamates in the presence of tert-butyl hydroperoxide.
Diamine-mediated degradative dimerisation of Morita–Baylis–Hillman ketones
作者:Ajit Kumar Jha、Anju Kumari、Srinivasan Easwar
DOI:10.1039/c9cc10068g
日期:——
A degradative dimerisation of Morita-Baylis-Hillmanketones was observed in the presence of a primary diamine. The reaction proceeded swiftly to produce methylene-bridged 1,3-dicarbonyl compounds. A brief mechanisticinvestigation alluded to a retro-Mannich reaction as the key step of the transformation.