1,2-Addition and cycloaddition reactions of niobium bis(imido) and oxo imido complexes.

ABSTRACT: The bis(imido) complexes (BDI)Nb(N ^t Bu)₂ and (BDI)Nb(N ^t Bu)(NAr) (BDI = N,N'-bis(2,6-diisopropylphenyl)-3,5-dimethyl-β-diketiminate; Ar = 2,6-diisopropylphenyl) were shown to engage in 1,2-addition and [2 + 2] cycloaddition reactions with a wide variety of substrates. Reaction of the bis(imido) complexes with dihydrogen, silanes, and boranes yielded hydrido-amido-imido complexes via 1,2-addition across Nb-imido π-bonds; some of these complexes were shown to further react via insertion of carbon dioxide to give formate-amido-imido products. Similarly, reaction of (BDI)Nb(N ^t Bu)₂ with tert-butylacetylene yielded an acetylide-amido-imido complex. In contrast to these results, many

SUBMITTER: Fostvedt JI 

PROVIDER: S-EPMC8162998 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature