One-step selective dehydrogenation of cyclic hemiacetal sugars toward to their chiral lactones

Zhan, Yueping; Hui, Yingshuang; Wang, Shuqi; Gao, Lizhen; Shen, Yangbin; Li, Zhenhua; Zhang, Yahong; Tang, Yi

doi:10.1016/j.cclet.2022.07.020

Cited by 3 publications

(1 citation statement)

References 51 publications

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“…The direct observation of H 2 also indicated that the CTH process of sugar on [Cp*Ir(bpyO)]OH À does not experience a direct hydrogen transfer route, [6] and the dehydrogenation and hydrogenation process can proceed dividually, which is consistent with the previous report. [25] The hydrogenation ability of [Cp*Ir(bpyO)]OH À can be further confirmed by the conversion result of sugar in the presence of [Cp*Ir(bpyO)]OH À and H 2 (Table S1). The mass spectrometry and HPLC analyses were utilized to further quantify and confirm the reaction products.…”

Section: Sugar Self-disproportionationmentioning

confidence: 67%

Sugars as Emerging Hydrogen Donors in the Synthesis of Alditol via Catalytic Transfer Hydrogenation

et al. 2023

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The utilization of biomass‐derived sugars as the emerging hydrogen donor in catalytic transfer hydrogenation (CTH) reactions has received great attention in recent years. In this work, we proposed two CTH routes of alditol production in the aqueous solution, i.e. self‐disproportionation of sugar and cross CTH of different sugars. Both of them could realize the process of sugar towards alditol. Taking advantage of the differences in hydrogenation and dehydrogenation capabilities of different sugars, a high C4 alditol yield of 85.9% was surprisingly obtained via cross CTH route using glucose as the hydrogen donor, which is much better than that obtained when using traditional hydrogen donor isopropanol. The CTH reactions using sugars as the hydrogen donor can not only reduce the utilization of fossil energy, but also provide a new pathway for the production of alditols.

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Section: Sugar Self-disproportionationmentioning

confidence: 67%

Sugars as Emerging Hydrogen Donors in the Synthesis of Alditol via Catalytic Transfer Hydrogenation

et al. 2023

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Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

Kostera,

Gonsalvi

2024

ChemSusChem

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In the quest for sustainable hydrogen production, the use of biomass‐derived feedstock is gaining importance. Acceptorless Dehydrogenation (AD) in the presence of efficient and selective catalysts has been explored worldwide as a suitable method to produce hydrogen from hydrogen‐rich simple organic molecules. Among these, glycerol and sugars have the advantage of being cheap, abundant, and obtainable from fatty acid basic hydrolysis (biodiesel industry) and from biomass by biochemical and thermochemical processing, respectively. Although heterogeneous catalysts are more widely used for hydrogen production from biomass‐based feedstock, the harsh reaction conditions applied limit applicability due to deactivation of active sites due to coking of carbonaceous materials. Moreover, heterogeneous catalyst are more difficult to fine‐tune than homogeneous counterparts, and the latter also allow for high process selectivities under milder conditions. The present Concept article summarizes the main features of the most active homogeneous catalysts reported for glycerol and monosaccharides AD. In order to directly compare hydrogen production efficiencies, the choice of literature works was limited to reports where hydrogen was clearly quantified by yields and turnover numbers (TONs). The types of transition metals and ligands is discussed, together with a perspective view on future challenges of homogeneous AD reactions for practical applications.

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Multiple effects of relative humidity on heterogeneous ozonolysis of cooking organic aerosol proxies from heated peanut oil emissions

Ji,

Chen,

Chen

et al. 2024

Science of The Total Environment

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One-step selective dehydrogenation of cyclic hemiacetal sugars toward to their chiral lactones

Cited by 3 publications

References 51 publications

Sugars as Emerging Hydrogen Donors in the Synthesis of Alditol via Catalytic Transfer Hydrogenation

Sugars as Emerging Hydrogen Donors in the Synthesis of Alditol via Catalytic Transfer Hydrogenation

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

Multiple effects of relative humidity on heterogeneous ozonolysis of cooking organic aerosol proxies from heated peanut oil emissions

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