Ap. Molchanov et Rr. Kostikov, Thermal isomerization of 2-bromo-2-fluoro-1-alkylidenecyclopropanes in polar solvents, RUSS J ORG, 37(6), 2001, pp. 784-786
2-Bromo-2-fluoro-1-alkylidenecyclopropanes heated in polar solvents undergo
isomerization into substituted 3-bromo-2-fluoro-1,3-butadienes. 2-Bromo-3-
methyl-1-methylene-3-phenyl-2-fluorocyclopropane at heating afforded a mixt
ure of substituted 1-(bromofluoromethylene)cyclopropane and isomeric 1-brom
o-1-fluoro-1,3-butadienes.