Ruthenium and osmium carbene compounds that are stable in the presence of {TAIL ~ a variety} of functional groups and can be used to catalyze {HEAD ~ olefin metathesis reactions} on unstrained cyclic and acyclic olefins are disclosed 
Ruthenium and osmium carbene compounds that are stable in the presence of { TAIL ~ a variety } of functional groups and can be used to catalyze { HEAD ~ olefin metathesis reactions } on unstrained cyclic and acyclic olefins are disclosed
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