Yh. Gai et al., CONVERSION OF NONACTIVATED ALKENES INTO CYCLOPROPANES WITH LITHIATED SULFONES UNDER NICKEL CATALYSIS, Bulletin de la Societe chimique de France, 133(9), 1996, pp. 817-829
Lithiated alkyl tert-butyl sulfones convert alkenes into cyclopropane
derivatives under nickel catalysis. The new reaction appears to differ
from the known cyclopropanation reactions from both the stereochemica
l and the electronic points of view.