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Issue 43, 2015
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Imido–hydrido complexes of Mo(iv): catalysis and mechanistic aspects of hydroboration reactions

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Abstract

Imido–hydrido complexes (ArN)Mo(H)(Cl)(PMe3)3 (1) and (ArN)Mo(H)2(PMe3)3 (2) (Ar = 2,6-diisopropylphenyl) catalyse a variety of hydroboration reactions, including the rare examples of addition of HBCat to nitriles to form bis(borylated) amines RCH2N(BCat)2. Stoichiometric reactivity of complexes 1 and 2 with nitriles and HBCat suggest that catalytic reactions proceed via a series of agostic borylamido and borylamino complexes. For complex 1, catalysis starts with addition of nitriles across the Mo–H bond to give (ArN)Mo(Cl)(N[double bond, length as m-dash]CHR)(PMe3)2; whereas for complex 2 stoichiometric reactions suggest initial addition of HBCat to form the agostic complex Mo(H)2(PMe3)33-NAr-HBcat) (16).

Graphical abstract: Imido–hydrido complexes of Mo(iv): catalysis and mechanistic aspects of hydroboration reactions

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Supplementary files

Article information


Submitted
30 Jul 2015
Accepted
02 Oct 2015
First published
07 Oct 2015

Dalton Trans., 2015,44, 18945-18956
Article type
Paper
Author version available

Imido–hydrido complexes of Mo(IV): catalysis and mechanistic aspects of hydroboration reactions

A. Y. Khalimon, P. M. Farha and G. I. Nikonov, Dalton Trans., 2015, 44, 18945
DOI: 10.1039/C5DT02945G

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