Direct C-H magnesiation of thiophenes with a Mg-Mg-bonded compound
Abstract
Reaction of Mg-Mg-bonded compound [K(THF)3]2[LMg-MgL] (1, L = [(2,6-iPr2C6H3)NC(CH3)]2 2-) with thiophenes afforded magnesium thienyl complexes (2-11) through ortho C-H magnesiation with release of H2. This provides an efficient approach to metal thienyl reagents, which can be used to construct functionalized thiophenes, e.g., thienyl alcohols from aldehydes or ketones.
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