title: Actinide-mediated catalytic addition of E-H bonds (E=N, P, S) to carbodiimides, isocyanates, and isothiocyanates.
abstract: Unprecedented catalytic reactivity of actinide coordination complexes toward heterocumulenes, such as carbodiimides, isocyanates, and isothiocyanates is reported. The mono(imidazolin-2-iminato) thorium(IV) complex [Th(Im(Dipp) N){N(SiMe3 )2 }3 ] (1) was applied as a precatalyst for the addition of EH (E=N, P, S) bonds to the YCX core (Y=R2 N; X=NR2 , O, S) of carbodiimides, isocyanates, and isothiocyanates. The respective insertion products were obtained in high yields under mild reaction conditions, with complex 1 displaying high tolerance toward functional groups and heteroatoms.
authors.affiliation: Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 32000 (Israel).
authors.forename: Isabell S R
authors.initials: IS
authors.lastname: Karmel
authors.affiliation: Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany).
authors.forename: Matthias
authors.initials: M
authors.lastname: Tamm
authors.affiliation: Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, 32000 (Israel). chmoris@tx.technion.ac.il.
authors.forename: Moris S
authors.initials: MS
authors.lastname: Eisen
keywords: actinide catalysis; carbodiimides; isocyanates; nucleophilic insertion; thioisocyanates