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Introduction N-heterocycles are among the most valuable synthetic scaffolds for pharmaceutical and agrochemical research.1 Their general functionalization has been thoroughly studied2 and various cross-couplings3 or metalations of these N-heterocycles have been reported for such purpose.4 A powerful tool for the preparation of N-heteroaryl organometallics is the directed C−H metalation using sterically hindered, non-nucleophilic metallic amide bases.5 Zinc and magnesium derived TMP-bases...
Research Article In memory of Gérard Cahiez PDF ShareShare Abstract Pairing lithium and manganese(II) to form lithium manganate [Li2Mn(CH2SiMe3)4] enables the efficient direct Mn–I exchange of aryliodides, affording transient (aryl)lithium manganate intermediates which in turn undergo spontaneous C−C homocoupling at room temperature to furnish symmetrical (bis)aryls in good yields under mild reaction conditions.
While alkali metal zincates have shown promising utility in organic synthesis, frequently these compounds are prepared in situ, and their identities remain blurred. Herein, the synthesis of a new family of sodium zincates featuring the chelating silyl(bis)amido ligand {Ph2Si(NAr*)2}2– (Ar* = 2,6-diisopropylphenyl) is presented.
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