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Synthesis of six types of novel bis and oligo-gem-difluorocyclopropanes has
been accomplished through the olefin metathesis reaction protocol. Two typ
es of ruthenium based olefin metathesis catalysts were tested: the rutheniu
m catalyst coordinated with 1,3-dimesityl-4,5-dihydrolmidazol-2-ylidene and
tricyclohexylphosphine ligands gave better results than the ruthenium cata
lyst that coordinated with two tricyclohexylphosphine ligands.