Copper-catalyzed ring-opening C(sp<sup>3</sup>)–N coupling of cycloketone oxime esters: access to 1°, 2° and 3° alkyl amines
作者:Li Tian、Shuangqiu Gao、Rui Wang、Yang Li、Chunlin Tang、Lili Shi、Junkai Fu
DOI:10.1039/c9cc02030f
日期:——
A novel copper-catalyzed C(sp3)–N coupling of cycloketone oxime esters with nitrogen nucleophiles has been realized. All of the N-aryl/alkylanilines, anilines and benzophenoneimine could be employed in this protocol to produce a variety of 1°, 2° and 3° alkyl amines in one or two steps. These resultant cyano-containing alkyl amines were proven to be versatile synthetic building blocks in a variety
The efficient copper-catalyzed cyanoalkylation of amines via C–Cbondcleavage has been demonstrated. Distinctive features of this procedure involves mild conditions, broad range of nitrogen nucleophiles, high selectivity, and good functional group tolerance, thus providing a useful approach for the C(sp3)–N bond formations. Most importantly, this protocol is applicable to the late-stage functionalization
An Efficient Synthesis of <i>N</i>-Arylputrescines and Cadaverines
作者:Liliana Orelli、Natalia Link、Jimena Díaz
DOI:10.1055/s-0028-1087817
日期:——
We present a two-step, general synthesis of N-arylputrescines and cadaverines, by cesium carbonate mediated alkylation of anilines with Ï-chloronitriles and subsequent reduction. The cesium-mediated alkylation shows remarkable selectivity towards the monoalkylation product. The method is straightforward and leads to satisfactory global yields.