Sodium hydride activates ruthenium carbene complexes to catalyze hydrogenation reactions subsequent to ring closing olefin metathesis. Under these conditions, hydrogenation of cyclopentenols proceeds smoothly at ambient temperature and under 1 atm of hydrogen in toluene. An alternative protocol was developed that involves the formation of hydrogen in situ by reaction of excess sodium hydride with protic functional groups and water.

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First and second generation Grubbs' catalyst mediate under otherwise identical conditions two different cyclization modes with high selectivity: a ring-closing metathesis and an atom-transfer radical addition (ATRA) pathway.

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