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XVII. Spaltung von 1,1'-Bicyclopropyliden (butterfly olefin) mit Lithiumpulver zu 1,6-Dilithio-3-hexin ueber (1,3-Dilithiopropyliden)cyclopropan als isolierbare Zwischenstufe
Maercker, Adalbert,Klein, Klaus-Dieter
, p. C35 - C38 (1991)
While for the reductive cleavage of a cyclopropane ?-bond usually two lithium atoms are necessary, with the same amount of lithium two ?-bonds of the "butterfly olefin" 4 are cleaved.On the way to 1,6-dilithio-3-hexyne (7) (1,3-dilithiopropylidene)cyclopropane (8) can be isolated provided that diethyl ether is used as the solvent.
