Abstract Protolysis and ketone addition reactions are reported for neophentylallyllithium in THF solvent. The yield of the trans-C 8 H 16 olefin essentially constant for protolysis with the following active hydrogen compounds: water, tert-butanol, 1-hexyne, cyclopentadiene, fluorene, and triphenylmethane. The relative yields of the cis-and α-neopentallyl isomers apparently depend on the steric bulk as well as the strength of the acid. The degree of ...