Pd/C-catalyzed reductive carbonylation of nitroaromatics for the synthesis of unsymmetrical ureas: one-step synthesis of neburon
作者:Chong-Liang Li、Jin-Bao Peng、Xinxin Qi、Jun Ying、Xiao-Feng Wu
DOI:10.1039/c8nj02413h
日期:——
A Pd/C catalyzed reductive carbonylation of nitroarenes for the synthesis of unsymmetrical ureas has been developed. Using inexpensive and stable nitroarenes as the substrates, a series of unsymmetrical ureas were produced in moderate to good yields. A range of functional groups including thioethers, halides and vinyl were compatible with this reaction. As a heterogeneous catalyst, Pd/C was recycled
已经开发了Pd / C催化的硝基芳烃的还原羰基化反应,用于合成不对称脲。使用廉价且稳定的硝基芳烃作为底物,以中等到良好的收率生产了一系列不对称脲。包括硫醚,卤化物和乙烯基在内的一系列官能团均与该反应相容。作为非均相催化剂,Pd / C可以循环使用四次,而不会失去活性。值得注意的是,在我们的标准条件下,以64%的收率制备了基于尿素的除草剂neburon。