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Showing 1 to 8 of 8 for “"Cobaloxime"”.
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Applications of Cobaloxime/Photoredox Co-operative Catalysis Toward Olefin Functionalization
Herein, the development and applications of cobaloxime/photoredox co-operative catalysis for olefin functionalization reactions is described. The primary focus has been to devise strategies that allow for the chemoselective cross-coupling of olefins with a variety of versatile functional groups …
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TRANSITION METAL MEDIATED, STEREOSELECTIVE HIGHER-ORDER [6+4] AND DIELS-ALDER [4+2] CYCLOADDITION REACTIONS: SYNTHESIS OF NOVEL 2-SILYL SUBSTITUTED-1,3-DIENYL COMPOUNDS AND THEIR DOMINO REACTIONS
We have prepared various substituted cobaloxime dienes and studied extensively their reactivities in Diels-Alder reactions. Based on the studies with cobaloxime chemistry, we concluded that increased exo selectivities were possible with the insertion of the transition metals in the 2-position of …
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Decarboxylative Strategies in Cobalt and Metallaphotoredox Catalysis: Approaches to Aroylation, Allylation, and Strain-Driven Reactivity
… is now feasible. The second involves the use of cobaloxime/photoredox cooperative catalysis to reinstall olefin functionality following a radical addition, yielding valuable α,β-unsaturated carbonyl compounds. Finally, a decarboxylative allylic alkylation using cobalt catalysis was developed, an …
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The synthesis, reactivity and application of functionalized alkyl transition metal complexes
… 0Br}] with various reagents including NaOMe, a cobaloxime anion, Meli, NaN3 , magnesium metal, phenol derivatives ( phenol, resorcinol, 4-hydroxybenzyl alcohol and 3,5- dihydroxybenzyl alcohol), trityl salt, PPh3, and CO/AgBF4 has also been studied. The new complexes that we obtained are namely: …
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Studies in Selective C-C Bond Formation via Borylation and Dehydrogenation
… catalytic system with sodium decatungstate and a cobaloxime catalyst, we separate dehydrogenation into two discreet hydrogen atom abstraction events. The first C-H bond breaking event is achieved by photoexcited decatungstate. The C-H bond b- to the resultant alkyl radical is significantly …
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In-situ monitoring of photocatalytic reactions in optofluidic microreactors
… the viologen indicator with hydrogen-evolving cobaloxime electrocatalysts, to probe catalytic intermediate states. To give further insight into the electron transfer from carbon nanodots to viologens, transient absorption spectroscopy was then performed to probe changes on timescales of 1 …
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The synthesis, structure and chemistry of some novel organometallic dendrimers
… analogues. The steric hindrance imparted by the cobaloxime ligand allowed only the zero-generation dendrimer to be synthesised. Several heterobimetallic dendritic wedges were synthesised as well as a hybrid block copolymer. The surface functionalisation of bromobenzyl-terminated dendrimers was …
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Synthesis, characterization and liquid crystalline properties of organometallic complexes of chromium, cobalt and platinum
… m = 3 or 8) to give the ester-functionalized cobaloximes [Co(DH)₂(py){(CH₂)ₘOC(O)(CH₂)ₙC₆H₄R}] (n = 0, 2 or 5; R = H, o-, m-, p-OCH₃, p-OC₇H₁₅ or p-OC₉H₁₉), 1- 9. The esterification occurred chemoselectively to extend the hydroxy alkyl group, without affecting the oxime entities on the DH …