Recent Developments on the Use of Group 13 Metal Complexes in Catalysis

Dagorne, Samuel; Wehmschulte, Rudolf J.

doi:10.1002/cctc.201800045

Cited by 98 publications

(36 citation statements)

References 107 publications

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“…That said, examples exist of main group complexes catalysing this transformation, and of Al complexes catalysing hydrosilylation or hydrogenation of imines,2c, 10e, 14 suggesting that imine hydroboration is a viable synthetic target.…”

mentioning

confidence: 99%

Comparing Neutral (Monometallic) and Anionic (Bimetallic) Aluminum Complexes in Hydroboration Catalysis: Influences of Lithium Cooperation and Ligand Set

et al. 2018

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Bimetallic lithium aluminates and neutral aluminum counterparts are compared as catalysts in hydroboration reactions with aldehydes, ketones, imines and alkynes. Possessing Li–Al cooperativity, ate catalysts are found to be generally superior. Catalytic activity is also influenced by the ligand set, alkyl and/or amido. Devoid of an Al−H bond, iBu2Al(TMP) operates as a masked hydride reducing benzophenone through a β‐Η transfer process. This catalyst library therefore provides an entry point into the future design of Al catalysts targeting substrate specific transformations.

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mentioning

confidence: 99%

Comparing Neutral (Monometallic) and Anionic (Bimetallic) Aluminum Complexes in Hydroboration Catalysis: Influences of Lithium Cooperation and Ligand Set

et al. 2018

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“…Considering the limitations of LDH formations, such as those related to the valence of metal cations and the sizes of the M 2+ and M 3+ radii, the candidate should maintain a valence state that is trivalent and has a cationic radius that is similar to Al 3+ (0.50 Å). Thus, a good candidate is suggested to be Ga in Group 13 in the periodic table . A Ga‐based catalyst was also found to exhibit better catalytic performance with respect to the destruction of volatile aromatic pollutants in photocatalysts .…”

Section: Bet Surface Areas Surface Element Compositions Oxygen Amoumentioning

confidence: 99%

Promotion Effect of Ga−Co Spinel Derived from Layered Double Hydroxides for Toluene Oxidation

Yang

Wang

et al. 2018

ChemCatChem

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Considering the radius similarity of Al 3 + (0.50 Å ) and Ga 3 + (0.62 Å ), AlÀCo and GaÀCo layered double hydroxides (LDH) was prepared as precursor to improve the synergetic interaction of the transition metals. The AlÀCo and GaÀCo spinel catalysts were obtained by the following calcination for the toluene oxidation. The GaÀCo (E a = 79.5 kJ mol À1 ) showed higher activity than the AlÀCo (E a = 95.4 kJ mol À1 ), and it exhibited excellent stability and resistance to carbon deposition during a 50 h reaction period at 300 8C. Characterization results indicated that the improved activity of GaÀCo spinel could be attributed to the higher reducibility (H 2 -TPR), more surface Co 3 + and adsorbed oxygen in quantity (XPS) and adsorbed toluene (Toluene-TPD) than AlÀCo spinel. Compared with traditional GaÀCo binary catalyst, the spinel structure possessed more Bsites cations outermost of the surface and surface oxygen vacancies for the toluene adsorption and ring-open reaction.

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“…[1] With atomic number 49, placed in period 5 and group 13, this d-block post-transition metal caught the attention of researchers in the field of organic chemistry and catalysis in the early 1990s, due to the Lewis acidity of group 13 metal complexes. [2] The range of chemical transformations catalyzed by indium and its derivatives has been widening through time, as the physical-chemical properties of this metal became clearer and more desirable from a sustainability point of view. Several advantages can be attributed to indium, since it is easy to handle, stable to air and moisture (a clear disadvantage of many other metal catalysts) and non-toxic.…”

Section: Introductionmentioning

confidence: 99%

A Decade of Indium‐Catalyzed Multicomponent Reactions (MCRs)

2020

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In the context of synthetic chemistry, Indium is one of the least explored elements of the notorious group 13 of the periodic table and has not attracted quite the same amount of attention as its fellow members, Aluminium and Boron, which have shown unprecedented synthetic applications for more than half a century. Nonetheless, Indium has emerged in recent years as a very valuable catalyst for multicomponent reactions. From the use of indium powder or easily accessible and cheap indium salts to more complex indium‐based metal‐organic frameworks or nanoparticles, a plethora of applications has been described throughout this last decade, showcasing not only the versatility of indium catalysis but also how much there is still to be explored. In the aftermath of the international year of the periodic table of the chemical elements in 2019, we navigated through the large inventory of multicomponent reactions (MCRs) to encounter the types of useful reactions leading to important target compounds (many of which are biologically active) catalyzed by this d‐block post‐transition metal.

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Recent Developments on the Use of Group 13 Metal Complexes in Catalysis

Cited by 98 publications

References 107 publications

Comparing Neutral (Monometallic) and Anionic (Bimetallic) Aluminum Complexes in Hydroboration Catalysis: Influences of Lithium Cooperation and Ligand Set

Comparing Neutral (Monometallic) and Anionic (Bimetallic) Aluminum Complexes in Hydroboration Catalysis: Influences of Lithium Cooperation and Ligand Set

Promotion Effect of Ga−Co Spinel Derived from Layered Double Hydroxides for Toluene Oxidation

A Decade of Indium‐Catalyzed Multicomponent Reactions (MCRs)

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