title: Efficient synthesis of diborylalkenes from alkenes and diboron by a new PSiP-pincer palladium-catalyzed dehydrogenative borylation.
abstract: The efficient synthesis of various diborylalkenes such as 1,1-, trans-1,2-, and cyclic 1,2-diborylalkenes from alkenes and diboron was achieved for the first time. Selective preparation of di- and monoborylalkenes was also realized by the appropriate choice of reaction conditions. The reaction was found to proceed via a new mechanism of dehydrogenative borylation through a monoborylpalladium complex bearing an anionic PSiP-pincer ligand as a key intermediate, which realized the efficient borylation without sacrificial hydroboration or hydrogenation of the alkene.
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology and CREST-JST, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Takaya
authors.forename: Naohiro
authors.initials: N
authors.lastname: Kirai
authors.forename: Nobuharu
authors.initials: N
authors.lastname: Iwasawa
mesh_terms: D000475:Alkenes / Q000737:chemistry; D001895:Boron / Q000737:chemistry*; D001896:Boron Compounds / Q000138:chemical synthesis*; D002384:Catalysis; D006865:Hydrogenation; D010165:Palladium
chemical_list: D000475:Alkenes; D001896:Boron Compounds; D010165:Palladium; D001895:Boron