title: Sterically directed iridium-catalyzed hydrosilylation of alkenes in the presence of alkynes.
abstract: A selective iridium catalyzed hydrosilylation of alkenes in the presence of more reactive alkynes is described. By utilizing [IrCl(COD)]2 in the presence of excess COD, hydrosilylation of alkenes and alkynes with ethynylsilanes is achieved with good chemo- and regioselectivity. This approach goes against the traditional reactivity trends of platinum and rhodium catalysts and allows access to highly substituted silicon alkyne tethers.
authors.affiliation: 107 Physical Sciences 1, Department of Chemistry, Oklahoma State University , Stillwater, Oklahoma 74078, United States.
authors.forename: Jill A
authors.initials: JA
authors.lastname: Muchnij
authors.forename: Farai B
authors.initials: FB
authors.lastname: Kwaramba
authors.forename: Ronald J
authors.initials: RJ
authors.lastname: Rahaim
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D000480:Alkynes / Q000138:chemical synthesis* / Q000737:chemistry*; D002384:Catalysis; D020650:Combinatorial Chemistry Techniques; D007495:Iridium / Q000737:chemistry*; D015394:Molecular Structure; D010984:Platinum / Q000737:chemistry; D012238:Rhodium / Q000737:chemistry; D012821:Silanes / Q000138:chemical synthesis* / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000475:Alkenes; D000480:Alkynes; D012821:Silanes; D007495:Iridium; D010984:Platinum; D012238:Rhodium