Ruthenium-catalysed aerobic oxidation of alcohols via multistep electron transfer

Bäckvall, Jan‐E.; Chowdhury, Ratan; Karlsson, Ulrika

doi:10.1039/c39910000473

Cited by 191 publications

(66 citation statements)

References 24 publications

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“…[21,22] Three different olefins were studied, cyclohexene, allylbenzene and 1-octene. The corresponding allylic acetates were formed in moderate yields (Table 2).…”

Section: Catalytic Activitymentioning

confidence: 99%

Synthesis and Characterization of Oligonuclear Ru, Co and Cu Oxidation Catalysts

et al. 2010

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In this work, we report the preparation and crystal structures of three new oligonuclear complexes, Ru2(bbpmp)(μ‐OAc)3 (4), [Co2(bbpmp)(μ‐OAc)(μ‐OMe)](PF6) (5), [Cu4(Hbbpmp)2(μ‐OAc)(H2O)2](OAc)(PF6)2 (6) {H3bbpmp = 2,6‐bis[(2‐hydroxybenzyl)‐(2‐pyridylmethyl)aminomethyl]‐4‐methyl‐phenol (3)}. The structures of the complexes were determined by single‐crystal X‐ray diffraction. The oxidation states of ruthenium, cobalt and copper in the complexes are +3, +3 and +2, respectively. In 4 and 5, RuIII and CoIII are coordinated to four oxygen and two nitrogen atoms in an octahedral geometry, while in 6, CuII adopts both octahedral (CuN2O4) and square‐pyramidal (CuN2O3) geometry. The potential of the three complexes as oxidation catalysts has been investigated.

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“…[21,22] Three different olefins were studied, cyclohexene, allylbenzene and 1-octene. The corresponding allylic acetates were formed in moderate yields (Table 2).…”

Section: Catalytic Activitymentioning

confidence: 99%

Synthesis and Characterization of Oligonuclear Ru, Co and Cu Oxidation Catalysts

et al. 2010

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“…All NMR spectra were recorded in CDCl 3 or [D 6 ]DMSO solutions with tetramethylsilane as the internal standard for 1 H NMR and CDCl 3 for 13 C NMR. Analytical gas chromatography was performed with a Varian 3400 GC with FID detector connected to a Varian 4270 computing integrator.…”

Section: Methodsmentioning

confidence: 99%

Zeolite-Encapsulated Cobalt Salophen Complexes as Efficient Oxygen-Activating Catalysts in Palladium-Catalyzed Aerobic 1,4-Oxidation of 1,3-Dienes

1999

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Different cobalt salophen catalysts 1, 2, 3, and 4 were prepared and studied as oxygen-activating agents in the palladium ± quinone catalyzed aerobic oxidation of 1,3-dienes. These cobalt salophen catalysts were also encapsulated into the supercage of zeolite Y by the template synthesis method (ship-in-the-bottle technique). The cobalt salophen catalyst 2 from 3,5-di-tertbutylsalicylaldehyde and 1,2-diaminobenzene was found to be more active than the unsubstituted parent cobalt salophen and the zeolite-encapsulated variant 2-ZeY showed remarkably high activity. With this catalyst, palladiumcatalyzed aerobic oxidation of 1,3-cyclohexadiene afforded 1,4-diacetoxy-2-cyclohexene in high yield (95 %) at room temperature within three hours. It was demonstrated that the zeolite-encapsulated catalyst 2-ZeY can be isolated and reused several times and still show good conversion in the third run.

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“…Among the various transition-metal catalysts, much attention has been focused on the ability of ruthenium catalysts, since they have often been used for hydrogenation and transfer hydrogenation reactions [5] as well as dehydrogenation and oxidation reactions [6,7]. In fact, some success has been realized using ruthenium catalysts in alcohol oxidation with NaIO 4 [8], tert-butyl hydroperoxide [9,10], chloramine-T [11], amine-N-oxide [11], iodosylbenzene [12], NaBrO 3 [13,14], benzoquinone/Co(salen) [15][16][17], H 2 O 2 [18], and TEMPO [19] as oxidants. However, there are few examples of a ruthenium-catalyzed real aerobic oxidation of alcohols without hydrogen acceptors [20,21].…”

Section: Introductionmentioning

confidence: 99%

Simple and Practical Aerobic Oxidation of Alcohols Catalyzed by a (<i>μ</i>-Oxo)tetraruthenium Cluster

Kondo¹,

Kimura²,

Kanda³

et al. 2011

GSC

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Ruthenium-catalysed aerobic oxidation of alcohols via multistep electron transfer

Cited by 191 publications

References 24 publications

Synthesis and Characterization of Oligonuclear Ru, Co and Cu Oxidation Catalysts

Synthesis and Characterization of Oligonuclear Ru, Co and Cu Oxidation Catalysts

Zeolite-Encapsulated Cobalt Salophen Complexes as Efficient Oxygen-Activating Catalysts in Palladium-Catalyzed Aerobic 1,4-Oxidation of 1,3-Dienes

Simple and Practical Aerobic Oxidation of Alcohols Catalyzed by a (<i>μ</i>-Oxo)tetraruthenium Cluster

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Ruthenium-catalysed aerobic oxidation of alcohols via multistep electron transfer

Cited by 191 publications

References 24 publications

Synthesis and Characterization of Oligonuclear Ru, Co and Cu Oxidation Catalysts

Synthesis and Characterization of Oligonuclear Ru, Co and Cu Oxidation Catalysts

Zeolite-Encapsulated Cobalt Salophen Complexes as Efficient Oxygen-Activating Catalysts in Palladium-Catalyzed Aerobic 1,4-Oxidation of 1,3-Dienes

Simple and Practical Aerobic Oxidation of Alcohols Catalyzed by a (&lt;i&gt;μ&lt;/i&gt;-Oxo)tetraruthenium Cluster

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Simple and Practical Aerobic Oxidation of Alcohols Catalyzed by a (<i>μ</i>-Oxo)tetraruthenium Cluster