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Start Over Author "Romerosa, Antonio" Journal journal of organometallic chemistry
9 results on '"Romerosa, Antonio"'

9. Synthesis, reactivity and catalytic properties of the allenylidene [Ru(C C CPh2)Cp(PTA)(PPh3)](CF3SO3) (PTA = 1,3,5-triaza-7-phosphaadamantane).

Author

Serrano-Ruiz, Manuel, Lidrissi, Chaker, Mañas, Sonia, Peruzzini, Maurizio, and Romerosa, Antonio

Subjects
*RUTHENIUM compound synthesis, *CHEMICAL reactions, *CATALYTIC activity, *ADAMANTANE, *INORGANIC synthesis, *ETHYNYL benzene, *ETHERIFICATION
Abstract

Abstract: The reactivity of [RuCpCl(PTA)(PPh3)] with HC CPh and HC CC(OH)PPh2 has been studied. The reaction with the phenylacetylene did not provide the desired vinylidene ruthenium complex but as a collateral result the complex [RuCp(DMSO-κS)(PTA)(PPh3)](CF3SO3) (1) was obtained by reaction of [RuCpCl(PTA)(PPh3)] with Ag(CF3SO3) in DMSO. Reaction of [RuCpCl(PTA)(PPh3)] with HC CC(OH)PPh2 provided the Ruthenium(II) diphenyl-allenylidene complex [Ru(C C CPh2)Cp(PTA)(PPh3)](CF3SO3) (2) that was characterized by NMR, IR spectroscopy and elemental analysis. The chemistry of the new diphenyl-allenylidene ruthenium complex has been studied towards a variety of small molecules such as water, O2, n-propylamine, cyclohexylamine and ethanethiol. From the reaction of 2 with the amines and thiol, two isomers are obtained respectively but only one of them could be isolated and characterized. The allenylidene complex was found to be a useful catalyst for the trans-etherification of 1,4-butanediol-divinyl-ether, ethoxyethene and 1-methoxycyclohexa-1,3-diene [Copyright &y& Elsevier]

Published
2014
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