22693-18-1Relevant articles and documents
Cyclobutylidenecyclopropane: New synthesis and use in 1,3-dipolar cycloadditions - A direct route to spirocyclopropane-annulated azepinone derivatives
De Meijere, Armin,Von Seebach, Malte,Kozhushkov, Sergei I.,Boese, Roland,Blaeser, Dieter,Cicchi, Stefano,Dimoulas, Tula,Brandi, Alberto
, p. 3789 - 3795 (2007/10/03)
Cyclobutylidenecyclopropane (7) was prepared in multigram quantities by a new three-step sequence starting from ethyl cyclobutanecarboxylate (4) (39% overall yield). 1,3-Dipolar cycloadditions of phenyl- (9), pyridyl- (10), and the newly prepared (four st
REACTIONS OF CYCLOPROPENES WITH DIAZOMETHANE IN THE PRESENCE OF PALLADIUM COMPOUNDS
Lukin, K. A.,Zefirov, N. S.
, p. 242 - 246 (2007/10/02)
The reaction of cyclopropenes with diazomethane in the presence of palladium acetate leads to bicyclobutane isomerization products, to olefins containing 1,4-pentadiene fragments, and to the oligomers of cyclopropenes.The predominating reaction path is determined by the degree of substitution of the double bond.