A NEW TISHCHENKO-TYPE ESTER FORMATION CATALYZED BY RUTHENIUM COMPLEXES
نویسندگان
چکیده
منابع مشابه
Facile formation of iodocyclobutenes by a ruthenium-catalyzed enyne cycloisomerization.
Enynes bearing an iodide (bromide) at their alkyne terminus react with catalytic amounts of [Cp*Ru(MeCN)3]PF6 in DMF to give strained iodo(bromo)cyclobutene derivatives in good to excellent yields.
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We report new Ru-CNN pincer catalysts for ester hydrogenation under mild conditions.
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The asymmetric direct aldol condensation of aldehydes with ethyl- and propylketones is catalyzed by syn-alpha-aminoalcohol-Yb(OTf)3 complexes, yielding the anti-1,3-diol monoesters with high diastereocontrol and good enantioselectivity. Three adjacent stereogenic centers are created in a simultaneous aldol condensation and Evans-Tishchenko reduction in an acyclic system.
متن کاملNew mono and dinuclear arene ruthenium chloro complexes containing ester substituents
The dinuclear arene ruthenium complexes [RuCl2{C6H5(CH2)3OCO-p-C6H4-OC8H17}]2 (1) and [RuCl2{p-C6H4(CH2COOCH CH3)2}]2 (2) have been obtained by dehydrogenation of the corresponding cyclohexadiene derivative with ruthenium chloride hydrat The single-crystal X-ray structure analysis of 2 shows the arene ligands to be involved in slipped-parallel p–p stacking interactions wit neighbouring molecule...
متن کاملNew arene ruthenium complexes with planar chirality
1,2,4-Trimethyl-cyclohexadiene reacts with RuCl3 nH2O in refluxing ethanol to afford quantitatively [RuCl2(1,2,4-C6H3Me3)] (1), the coordination of 1,2,4-trimethylbenzene to the ruthenium atom introducing planar chirality at the g-arene ligand. Th dinuclear complex 1 reacts with two equivalents of triphenylphosphine (PPh3) to give quantitatively, as a racemic mixture o enantiomers, [RuCl2(1,2,4...
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ژورنال
عنوان ژورنال: Chemistry Letters
سال: 1978
ISSN: 0366-7022,1348-0715
DOI: 10.1246/cl.1978.17