Tetrakis (1-methylcyclopropyl) ethylene in four steps from α-methyl-γ-butyrolactone

Add time:09/26/2019    Source:sciencedirect.com

A short and efficient synthesis of bis(1-methylcyclopropyl)ketone ({=6}) via the spiro-acetal {=4} from α-methyl-γ-butyrolactone ({=1}) been found, and reductive dimerization of {=6} by McMurry coupling yields tetrakis(1-methylcyclopropyl)ethylene ({=7}) in competition with ring-opened products ({=8} and ({=9}).

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