About: Group 2 Promoted Hydrogen Release from NMe(2)H⋅BH(3): Intermediates and Catalysis

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An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Group 2 Promoted Hydrogen Release from NMe(2)H⋅BH(3): Intermediates and Catalysis
Creator	Hill, Michael Mahon, Mary Liptrot, David Macdougall, Dugald
source	PMC
abstract	Both homo‐ and heteroleptic alkyl and amide complexes of the Group 2 elements Mg and Ca are shown to be active for the catalytic dehydrocoupling of Me(2)NH⋅BH(3). Reactions of either magnesium dialkyls or the β‐diketiminate complex [HC{(Me)CN(Dipp)}(2)MgnBu] with four or two equivalents of Me(2)NHBH(3), respectively, produce compounds containing the [H(3)BNMe(2)BH(2)Me(2)N](−) ion, which coordinates to the magnesium centers through Mg—N and Mg⋅⋅⋅HB interactions in both the solution and solid states. Thermolysis of these compounds at 60 °C produces the cyclic product [(H(2)BNMe(2))(2)] and, it is proposed, magnesium hydrido species by an unprecedented δ‐hydride elimination process. Calcium‐based species, although less reactive than their magnesium‐based counterparts, are found to engage in similar dehydrocoupling reactivity and to produce a similar distribution of products under thermally promoted catalytic conditions. A mechanism for these observations is presented that involves initial production and insertion of H(2)B=NMe(2) into polarized M—N bonds as the major B—N bond‐forming step. The efficacy of this insertion and subsequent β‐ or δ‐hydride elimination steps is proposed to be dependent upon the charge density and polarizing capability of the participating Group 2 center, providing a rationale for the observed differences in reactivity between magnesium and calcium.
has issue date	2010-06-11(xsd:dateTime)
bibo:doi	10.1002/chem.201000127
bibo:pmid	20544744
has license	no-cc
sha1sum (hex)	45473537ad2c61d0c9cbeedeb80f93fb9bce8b89
schema:url	https://doi.org/10.1002/chem.201000127
resource representing a document's title	Group 2 Promoted Hydrogen Release from NMe(2)H⋅BH(3): Intermediates and Catalysis
has PubMed Central identifier	PMC7162034
has PubMed identifier	20544744
schema:publication	Chemistry
resource representing a document's body	covid:45473537ad2c61d0c9cbeedeb80f93fb9bce8b89#body_text
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