dilithium as a Novel Cyclizing and Homologizing Reagent for Bifunctional Organic Substrates

Article abstract of DOI:10.1021/jo00219a063

<(Phenylsulfonyl)methylene>dilithium generated from methyl phenyl sulfone and 2 equiv of n-butyllithium in THF, reacts readily with a series of bifunctional organic substrates, such as dihalides, halo epoxides, halo carbonyls, halo nitriles, dicarbonyls, and α,β-unsaturated carbonyls, to give carbocyclic and homologous derivatives in good to excelent yields.