Transfer Hydrogenolysis Research Articles

Transfer hydrogenation and transfer hydrogenolysis. 13. Hydrogen transfer from cyclic amines to aromatic nitro compounds catalyzed by noble metal salts

Transfer hydrogenation and transfer hydrogenolysis. 13. Hydrogen transfer from cyclic amines to aromatic nitro compounds catalyzed by noble metal salts

ChemInform Abstract: Transfer Hydrogenation and Transfer Hydrogenolysis. Part II. Facile Dehydrogenation of Aromatic Hydrocarbons and the Mechanism of the Hydrogen Transfer from Indan, Tetralin, and Dioxane to Aldehydes Catalyzed by Dihydridotetrakis(triphenylphosphine)ruthenium(II).

AbstractIn Gegenwart des Ruthenium‐Katalysators (III) erhält man aus Indan (I) mit den Aldehyden (II) unter Hydrid‐Übertragung Inden (IV) und die Carbinole (V).

Transfer hydrogenation and transfer hydrogenolysis. 11. Facile dehydrogenation of aromatic hydrocarbons and the mechanism of the hydrogen transfer from indan, tetralin, and dioxane to aldehydes catalyzed by dihydridotetrakis(triphenylphosphine)ruthenium(II)

Transfer hydrogenation and transfer hydrogenolysis. 11. Facile dehydrogenation of aromatic hydrocarbons and the mechanism of the hydrogen transfer from indan, tetralin, and dioxane to aldehydes catalyzed by dihydridotetrakis(triphenylphosphine)ruthenium(II)

Transfer hydrogenation and transfer hydrogenolysis. IX. Hydrogen transfer from organic compounds to aldehydes and ketones catalyzed by dihydridotetrakis(triphenylphosphine)ruthenium(II)

Transfer hydrogenation and transfer hydrogenolysis. IX. Hydrogen transfer from organic compounds to aldehydes and ketones catalyzed by dihydridotetrakis(triphenylphosphine)ruthenium(II)

Transfer hydrogenation and transfer hydrogenolysis: VIII. Hydrogen transfer from amines to olefins catalyzed by heterogeneous and homogeneous catalysts

It was found that Pd-carbon, Pd-asbestos, and Pd-black have high catalytic activity in the hydrogen transfer from indoline to cycloheptene. RuCl 2(PPh 3) 3, RhCl 3 · 2H 2O, IrCl 3, (NH 4) 2PdCl 4, and RhH(PPh 3) 4 also showed high activity. The hydrogen-donating ability of organic compounds in the hydrogen transfer reaction catalyzed by Pd-carbon decreased in the order: indoline > formic acid > tetrahydroquinoline > piperidine > pyrrolidine > cyclohexene > N-methylpyrrolidine > di- n-propylamine > d,l-limonene > 1,2-dihydronaphthalene, etc. Though monoenes were hydrogenated efficiently, 1,3- and 1,5-cyclooctadiene were reduced to cyclooctene in high selectivity. The initial rate of the hydrogen transfer from indoline to cycloheptene was proportional to the amine concentration at first and then became independent of the amine concentration. The rate showed a maximum when the olefin concentration was varied. This result indicates the poisoning effect of the olefin.

Transfer Hydrogenation and Transfer Hydrogenolysis VII. The Mechanism of Hydrogen Transfer from 2-Propanol to Olefins Catalyzed by Dihydridotetrakis(triphenylphosphine)ruthenium(II)

Abstract The dihydride complex, RuH2(PPh3)4, has been found to be an excellent catalyst for the hydrogen transfer from 2-propanol to olefins. For cyclohexene in toluene solution, the rate law at 80°C was: Rate=\frac0.04[C]_o[D]1+24[P] where [C]0, [D] and [P] are the concentration of the catalyst, 2-propanol and triphenylphosphine, respectively. It is pressumed that active intermediates of the reaction are not Ru(IV)-species but Ru(0)-species. The rate determining step of the reaction is inferred to be the dehydrogenation of 2-propanol, that is, the hydrogen transfer from the alcohol to Ru(0)-complex to form a hydride complex by oxidative addition.

Transfer hydrogenation and transfer hydrogenolysis. V. Hydrogen transfer from amines, ethers, alcohols, and hydroaromatic compounds to olefins catalyzed by chlorotris(triphenylphosphine)rhodium(I)

Transfer hydrogenation and transfer hydrogenolysis. V. Hydrogen transfer from amines, ethers, alcohols, and hydroaromatic compounds to olefins catalyzed by chlorotris(triphenylphosphine)rhodium(I)

Transfer hydrogenation and transfer hydrogenolysis. VI. Mechanism of hydrogen transfer from indoline to cycloheptene catalyzed by chlorotris(triphenylphosphine)rhodium(I)

Transfer hydrogenation and transfer hydrogenolysis. VI. Mechanism of hydrogen transfer from indoline to cycloheptene catalyzed by chlorotris(triphenylphosphine)rhodium(I)

Transfer hydrogenation and transfer hydrogenolysis. II. Catalytic activity of some soluble complexes in hydrogen transfer from alcohols to olefins and the mechanism of the reaction catalyzed by hydridotetrakis(triphenylphosphine)rhodium(I)

Transfer hydrogenation and transfer hydrogenolysis. II. Catalytic activity of some soluble complexes in hydrogen transfer from alcohols to olefins and the mechanism of the reaction catalyzed by hydridotetrakis(triphenylphosphine)rhodium(I)

Homogeneous transfer hydrogenolysis of carbon tetrachloride by carbinols catalyzed by dichlorotris(triphenylphosphine)ruthenium (II)

Homogeneous transfer hydrogenolysis of carbon tetrachloride by carbinols catalyzed by dichlorotris(triphenylphosphine)ruthenium (II)

Catalytic transfer hydrogenolysis of phenols and aromatic amines

Catalytic transfer hydrogenolysis of phenols and aromatic amines