Chemical Communications p. 443 - 444 (1999)
Update date:2022-08-04
Topics:
Bianchini, Claudio
Peruzzini, Maurizio
Zanobini, Fabrizio
Lopez, Carlos
De Los Rios, Isaac
Romerosa, Antonio
The Ru(II) complex mer,trans-[(PNP)RuCl2(PPh3)] [PNP = MeCH2CH2N(CH2CH2PPh2)2] reacts in refluxing THF with propargyl alcohols HC≡CCRR'OH (R = R' = Me, Ph; R = Me, R' = Ph) yielding either the allenylidene complex fac,cis-[(PNP)RuCl2{C=C=CPh2}] or the alkenylvinylidene derivatives fac,cis-[(PNP)RuCl2{C=C(H)C(R)=CH2}] (R = Me, Ph); treatment of all these complexes in CH2Cl2 or THF with water results in the formation of the ruthenium carbonyl fac,cis-[(PNP)RuCl2(CO)] and free alkenes H2C=CRR' (R = R' = Me, Ph; R = Me, R' = Ph) via regioselective C(α)-C(β) bond cleavage.
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