82736-55-8Relevant academic research and scientific papers
1,1-Dicyclopropylallene: Cycloadditions and Dimerization. Dependence of the Regioselectivity on Solvent Polarity and Lewis Acid Catalysis in the Reactions with Alkoxycarbonyl-Activated Olefins
Komiya, Zen,Nishida, Shinya
, p. 1500 - 1509 (1983)
1,1-Dicyclopropylallene (1a) was found to react with a number of activated olefins (2) in a manner.The reactions with monoactivated 2, as well as those with 1,2-disubstituted 2, proceeded at reasonable rates at 200 deg C, whereas the reactions with
Cycloadditions of 1,1-Dicyclopropylallene with Activated Olefins; Dependency of the Regioselectivity upon Solvent Polarity and Lewis Acid Catalysis
Komiya, Zen,Nishida, Shinya
, p. 429 - 430 (2007/10/02)
The regioselectivity of the cycloaddition of 1,1-dicyclopropylallene (1) with diethyl methylenemalonate (2d) was markedly influenced by the solvent polarity and the presence of a Lewis-acid catalyst, suggesting that a polar mechanism is operating in preferential formation of the inner adduct (3).
