Cyclohexa-1,4-dienes in transition-metal-free ionic transfer processes.
Cyclohexa-1,4-dienes in transition-metal-free ionic transfer processes.
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DOI:
10.1039/c7sc01657c
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发表时间:
2017-07-01
期刊:
影响因子:
8.4
通讯作者:
Oestreich M
中科院分区:
文献类型:
--
作者:
Keess S;Oestreich M
Adequately substituted cyclohexa-1,4-dienes with an electrofuge attached to one of the bisallylic carbon atoms serve as surrogates for small molecules. Safe- and convenient-to-handle surrogates of hazardous chemicals are always in demand. Recently introduced cyclohexa-1,4-dienes with adequate substitution fulfil this role as El+/H– equivalents in B(C6F5)3-catalysed transfer reactions of El–H to π- and σ-donors (CC/CC and CO/CN). Surrogates of Si–H/Ge–H, H–H and even C–H bonds have been designed and successfully applied to ionic transfer hydrosilylation/hydrogermylation, hydrogenation and hydro-tert-butylation, respectively. These processes and their basic principles are summarised in this Minireview. The similarities and differences between these transfer reactions as well as the challenges associated with these transformations are discussed.
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