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

Khalimon, Andrey; Farhaa, Philip M.; Nikonov, Georgii I.

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

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Date

2015

Authors

Khalimon, Andrey

Farhaa, Philip M.

Nikonov, Georgii I.

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)(NvCHR)(PMe3)2; whereas for complex 2 stoichiometric reactions suggest initial addition of HBCat to form the agostic complex Mo(H)2(PMe3)3(η3-NAr-HBcat)

Keywords

Research Subject Categories::NATURAL SCIENCES::Chemistry, Imido–hydrido complexes of Mo(IV)

Citation

Andrey Y. Khalimon, Philip M. Farhaa, Georgii I. Nikonov; 2015; Imido–hydrido complexes of Mo(IV): catalysis and mechanistic aspects of hydroboration reactions; Dalton Transactions