A visible-light-induced remote oxyfluoroalkylation, including ketofluoroalkylation and hydroxytrifluoromethylation, of heteroalkynes is developed with dimethylsulfoxide (DMSO) and H2O as the oxygen source, respectively. It provides a facile access to complex fluoroalkylated (Z)-alkenes in satisfactory yields with excellent regio-, stereo-, and site-selectivity. The reaction involves an uncommon vinyl
Brandsma,L.; Schuijl,P.J.W., Recueil des Travaux Chimiques des Pays-Bas, 1969, vol. 88, p. 513 - 518
作者:Brandsma,L.、Schuijl,P.J.W.
DOI:——
日期:——
Brandsma,L. et al., Recueil des Travaux Chimiques des Pays-Bas, 1964, vol. 83, p. 208 - 216
作者:Brandsma,L. et al.
DOI:——
日期:——
Stereoselective hydrozirconation of alkynylsulfide and regioselective synthesis of haloalkenyl sulfide via electrophile-switched halogenation of thioalkenyl zirconocene
作者:Weixin Zheng、Ya Hong、Ping Wang、Fenfen Zheng、Yanjing Zhang、Wei Wang
DOI:10.1016/j.tetlet.2013.04.122
日期:2013.7
Stereoselective preparation of alkenyl sulfide was carried out via syn-hydrozirconation of the alkynyl sulfide. Regiochemistry of halogenation of the thioalkenyl zirconocene could be switched by different halides. alpha-Chloroalkenyl sulfide or beta-haloalkenyl sulfide (Br, I) could be obtained by the treatment of NCS or NBS (NIS), respectively. Possible mechanism of halogenation of the thioalkenyl zirconocene was set up herein. (C) 2013 Elsevier Ltd. All rights reserved.