Indium-Mediated Allylation of the <i>N</i>,<i>N</i>-Dimethyl Glyoxal Mono-Hydrazone: One-Pot Synthesis of Bis-Homoallyl, and of Homoallyl-Alkyl 1,2-Diols
Hydrazones behave as highly reactive species in the allylation under Barbier conditions. Nucleophilic addition of an alkyllithium to the carbonyl moiety of the glyoxal mono-hydrazone followed by indium-mediated allylation, leads in high yields to bis-functionalized 1,2-diols in a one-pot two-step reaction.