Reactions of areneselenenamides with alkenes in the presence of phosphorus(V) and sulfur(IV) oxyhalides. New synthesis of β-haloalkyl selenides
                                
                                    
                                        作者:R. L. Antipin、V. N. Klak、E. K. Beloglazkina、N. V. Zyk                                    
                                    
                                        DOI:10.1134/s1070428009060062
                                    
                                    
                                        日期:2009.6
                                    
                                    A new procedure was proposed for activation of areneselenenamides with phosphorus(V) and sulfur(IV) oxyhalides. According to the (1)H, (13)C, and (31)P NMR data, areneselenenamide reacts with phosphorus oxyhalide to form intermediate adduct in which the phosphorus atom is coordinated at the selenium. Areneselenenamides activated by phosphorus(V) oxyhalides react with alkenes (norbornene and norbornadiene) with high trans-stereoselectivity. Their reactions with terminal olefins are regioselective, and they lead to preferential formation of the corresponding Markovnikov adducts.