| 1. |
- Ahlsten, Nanna, 1982-, et al.
(författare)
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Ir-catalysed formation of C-F bonds. From allylic alcohols to α-fluoroketones
- 2011
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Ingår i: Chemical Communications. - : Royal Society of Chemistry (RSC). - 1359-7345 .- 1364-548X. ; 47:29, s. 8331-8333
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Tidskriftsartikel (refereegranskat)abstract
- A novel iridium-catalysed tandem isomerisation/C-F bond formation from allylic alcohols and Selectfluor® to prepare α-fluorinated ketones as single constitutional isomers is reported.
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| 2. |
- Carson, Fabian, et al.
(författare)
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Effect of the functionalisation route on a Zr-MOF with an Ir-NHC complex for catalysis
- 2015
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Ingår i: Chemical Communications. - : Royal Society of Chemistry (RSC). - 1359-7345 .- 1364-548X. ; 51:54, s. 10864-10867
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Tidskriftsartikel (refereegranskat)abstract
- A new iridium N-heterocyclic carbene (NHC) metallolinker has been synthesised and introduced into a metal-organic framework (MOF), for the first time, via two different routes: direct synthesis and postsynthetic exchange (PSE). The two materials were compared in terms of the Ir loading and distribution using X-ray energy dispersive spectroscopy (EDS), the local Ir structure using X-ray absorption spectroscopy (XAS) and the catalytic activity. The materials showed good activity and recyclability as catalysts for the isomerisation of an allylic alcohol.
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| 3. |
- Cumpstey, Ian, et al.
(författare)
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Iridium-catalysed condensation of alcohols and amines as a method for aminosugar synthesis
- 2011
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Ingår i: Chemical Communications. - : Royal Society of Chemistry (RSC). - 1359-7345 .- 1364-548X. ; 47:27, s. 7827-7829
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Tidskriftsartikel (refereegranskat)abstract
- Primary carbohydrate amines at primary and secondary carbons are alkylated by alcohols in the presence of [Cp*IrCl2]2. When primary carbohydrate alcohols are used as the coupling partners and in the presence of Cs2CO3, amine-linked pseudodisaccharides are obtained. Secondary carbohydrate alcohols are unaffected under these conditions, which allows regioselective reactions.
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| 4. |
- Martinez-Erro, Samuel, et al.
(författare)
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2,2-Diiododimedone : a mild electrophilic iodinating agent for the selective synthesis of alpha-iodoketones from allylic alcohols
- 2017
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Ingår i: Chemical Communications. - : Royal Society of Chemistry (RSC). - 1359-7345 .- 1364-548X. ; 53:71, s. 9842-9845
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Tidskriftsartikel (refereegranskat)abstract
- 2,2-Diiodo-5,5-dimethylcyclohexane-1,3-dione is reported as a new electrophilic iodinating agent that selectively iodinates electron-rich aromatics. In contrast to other common electrophilic iodinating reagents, its mild nature allows it to be used for the selective synthesis of alpha-iodinated carbonyl compounds from allylic alcohols through a 1,3-hydrogen shift/iodination process catalyzed by iridium(III) complexes.
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| 5. |
- Roy, Souvik, et al.
(författare)
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Catalyst accessibility to chemical reductants in metal-organic frameworks
- 2017
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Ingår i: Chemical Communications. - : Royal Society of Chemistry (RSC). - 1359-7345 .- 1364-548X. ; 53:22, s. 3257-3260
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Tidskriftsartikel (refereegranskat)abstract
- A molecular H-2-evolving catalyst, [Fe-2(cbdt)(CO)(6)] ([FeFe], cbdt = 3-carboxybenzene-1,2-dithiolate), has been attached covalently to an amino-functionalized MIL-101(Cr) through an amide bond. Chemical reduction experiments reveal that the MOF channels can be clogged by ion pairs that are formed between the oxidized reductant and the reduced catalyst. This effect is lessened in MIL-101-NH-[FeFe] with lower [FeFe] loadings. On longer timescales, it is shown that large proportions of the [FeFe] catalysts within the MOF engage in photochemical hydrogen production and the amount of produced hydrogen is proportional to the catalyst loading.
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