The combination of (indenyl)Ru(PPh 3 ) 2 (CCPh) ( 1 ) with B(C 6 F 4 H) 3 or Al(C 6 F 5 ) 3 generates FLPs that are shown to react with CO 2, aldehyde, and alkyne to generated new C–C bonds. While in these reactions the metal center is ancillary, subsequent reaction of the alkyne addition product with additional alkyne prompts Ru vinylidene chemistry that releases the new organic fragment from Ru.
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Boone et al. (2013) studied this question.
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