Lewis Base Adducts of Phosphine-Stabilized Pb(II) Cations: Synthesis and Catalytic Hydroamination of Alkynes
Aswin Chandran, José Miguel León Baeza, Vladislava Timofeeva, Raphaël Nougué, Shintaro Takahashi, Ryoma Ohno, Antoine Baceiredo, René S. Rojas, Mikhail A. Syroeshkin, Tsukasa Matsuo, Nathalie Saffon‐Merceron, Tsuyoshi Kato
Abstract
Phosphine-stabilized Pb(II) cations, generated by chloride abstraction from chloroplumbylene 1, readily react with Lewis bases (L) such as phosphines and amines to give the corresponding donor–acceptor complexes 3. These complexes 3 react with phenylacetlylene via alkyne insertion into the Pb–L bond to afford the corresponding vinylplumbylenes 4. Of particular interest, the stable complex 4-HNiPr2 (with a secondary amine) can be used as a hydroamination catalyst of phenylacetylene.
Topics & Concepts
ChemistryHydroaminationPhenylacetylenePhosphineAlkyneCatalysisAdductLewis acids and basesMedicinal chemistryPolymer chemistryAmine gas treatingBase (topology)Organic chemistryMathematical analysisMathematicsOrganoboron and organosilicon chemistrySynthesis and characterization of novel inorganic/organometallic compoundsAsymmetric Hydrogenation and Catalysis