This work reports a green method for the synthesis of aryl selenocyanates via a three‐component reaction of arylboronicacids, Se powder, and trimethylsilyl cyanide (TMSCN) undermetal‐free and additive‐freeconditions. Remarkably, TMSCN acts as not only the substrate, but also the catalyst. Various selenaheterocycles can be also accessed with a catalytic amount of TMSCN.
Trifluoromethylselenolation of Aryldiazonium Salts: A Mild and Convenient Copper-Catalyzed Procedure for the Introduction of the SeCF<sub>3</sub>Group
作者:Pavlo Nikolaienko、Magnus Rueping
DOI:10.1002/chem.201504601
日期:2016.2.18
The straightforward introduction of the trifluoromethylseleno group into aromatic and heteroaromatic compounds is accomplished by the utilization of readily available aryldiazonium tetrafluoroborates, potassium selenocyanate, and Ruppert–Prakash reagent. The reaction tolerates a wide range of aromatic and heteroaromatic diazonium salts and is also amenable to the synthesis of pentafluoroethyl selenoethers