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Paramagnetic Titanium(III) and Zirconium(III) Metallocene Complexes as Precatalysts for the Dehydrocoupling/Dehydrogenation of Amine–Boranes
Author(s) -
Helten Holger,
Dutta Barnali,
Vance James R.,
Sloan Matthew E.,
Haddow Mairi F.,
Sproules Stephen,
Collison David,
Whittell George R.,
LloydJones Guy C.,
Manners Ian
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201207903
Subject(s) - dehydrogenation , boranes , chemistry , metallocene , amine gas treating , catalysis , zirconium , organic chemistry , borane , alkene , polymer chemistry , polymerization , boron , polymer
Complexes of Group 4 metallocenes in the +3 oxidation state and amidoborane or phosphidoborane function as efficient precatalysts for the dehydrocoupling/dehydrogenation of amine–boranes, such as Me 2 NH⋅BH 3 (see scheme). Such Ti III –amidoborane complexes are generated in [Cp 2 Ti]‐catalyzed amine–borane dehydrocoupling reactions, for which diamagnetic M II and M IV species have been previously postulated as precatalysts and intermediates.