Tandem reductive lithiations - Carbanionic cyclizations yielding sulfur stabilized cyclopropyl- and cyclobutylcarbinyllithiums

Article abstract of DOI:10.1016/S0040-4020(98)01141-7

Reductive lithiation of 1,4- or 1,5-bis(phenylthio)-1-alkenes with an aromatic radical-anion results in replacement with a lithium atom of only that phenylthio group which is attached to the sp³ carbon atom. The resulting carbanion executes an