Abstract: 1, 3-Pentadiyne reacts with excess n-butyllithium complexed with TMEDA to form a perlithiated species, CaLi4. With water, CSia forms three komers, 1, 3-pentadiyne, 1, 4- pentadiyne, and 1, 2-pentadien-4-yne; with deuterium oxide, the three corresponding perdeuterated isomers are obtained. C5Lia reacts with dimethyl sulfate to give three permethylated isomers, 6, 6-dimethyl-2, 4-heptadiyne, 4, 4-dimethyl-2, 5-heptadiyne, and ...
