24308-54-1Relevant academic research and scientific papers
REARRANGEMENT OF LITHIUM DERIVATIVES OF CYCLOPROPYL-SUBSTITUTED METHYLENECYCLOPROPANES
Akhachinskaya, T. V.,Donskaya, N. A.,Grishin, Yu. K.,Shabarov, Yu. S.
, p. 295 - 301 (2007/10/02)
Cyclopropyllithium compounds, produced by the metallation of 1,1-dicyclopropyl- and 1-methyl-1-cyclopropylmethylenecyclopropanes with the butyllithium-tetramethylethylenediamine complex, undergo thermal rearrangement and give, after treatment of the reaction mixture with water, spirohept-4-enes.A possible rearrangement scheme is proposed and discussed.
Metallacycloalkanes, VI. Five- to Seven-membered (2,2'-Bipyridine)nickelacycloalkanes from Methylenecyclopropane and Nickel(0) Compounds
Binger, Paul,Doyle, Michael J.,Benn, Reinhard
, p. 1 - 10 (2007/10/02)
Depending on the reaction conditions (2,2'-bipyridine)(η2-methylenecyclopropane)nickel (4) or the (2,2'-bipyridine)nickelacycloalkanes 5 - 8 were obtained from methylenecyclopropane (1) and (2,2'-bipyridine)(1,5-cyclooctadiene)nickel.The complexes were characterized spectroscopically and by decomposition reactions. 5 - 8 react with methyl acrylate under reductive elimination to give the cycloalkanes 2 (from 5), 3 (from 6a, b), or 9 (from 7).With CO 5 reacts additionally through an insertion to yield the cyclopentanone derivative 10.Alcoholysis of 5 with ethanol affords 2-cyclopropylmethyl-1-butene (11), whereas with phenol the new (2,2'-bipyridine)nickel complex 12 was formed.
