925-93-9Relevant articles and documents
An Improved Procedure for the Preparation of Very Pure Ethanol-OD
Pesendorfer, Johann,Vierhapper, Friedrich W.
, p. 877 - 878 (1985)
Changed molar ratio of starting materials and prolonged reaction times in the deuterolysis of tetraethylorthosilicate gave yields of pure (>99.5percent) ethanol-OD (relative to starting D2O) nearly twice of that of a literature procedure. - Keywords: Deuterolysis; Ethanol-OD; Methanol-OD; Tetraethylorthosilicate
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Kharasch et al.
, (1958)
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Isotope Effects in the Solvolysis of Sterically Hindered Arenesulfonyl Chlorides
Iazykov, Mykyta,Canle L., Moisés,Santaballa, J. Arturo,Rublova, Ludmila
, p. 744 - 750 (2015/10/06)
Solvent isotope effects in the ethanolysis of sterically hindered arenesulfonyl chlorides ruled out a proton transfer in the rate-determining step and agreed with a SN2 mechanism involving at least a second solvent molecule in the transition state (TS). The lack of a secondary kinetic isotope effect in the o-alkyl groups allows us to disregard the possible contribution of σ-π hyperconjugation. The measured activation parameters are consistent with a SN2 mechanism involving the participation of solvent molecules in the TS, possibly forming a cyclic TS through a chain of solvent molecules.
Synthesis, reactivity and catalytic properties of the allenylidene [Ru(C=C=CPh2)Cp(PTA)(PPh3)](CF3SO3) (PTA = 1,3,5-triaza-7-phosphaadamantane)
Serrano-Ruiz, Manuel,Lidrissi, Chaker,Ma?as, Sonia,Peruzzini, Maurizio,Romerosa, Antonio
, p. 654 - 661 (2014/03/21)
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)(PPh 3)](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=CPh 2)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-butanedioldivinyl-ether, ethoxyethene and 1-methoxycyclohexa-1,3-diene