Prins cyclisation of (–)-isopulegol with benzaldehyde over ZSM-5 based micro-mesoporous catalysts for production of pharmaceuticals

Kholkina, Ekaterina; Mäki‐Arvela, Päivi; Lozachmeuer, Chloe; Barakov, Roman; Shcherban, Nataliya D.; Murzin, Dmitry Yu.

doi:10.1016/s1872-2067(19)63305-x

Cited by 11 publications

(9 citation statements)

References 24 publications

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“…side dehydration reaction. The role of water was also found to be essential for halloysite nanotubes as a stereoselective catalyst for synthesis octahydro-2H-chromen-4-ol [49]. In particular, removal of water by drying the catalyst at elevated temperature was detrimental for selectivity to the desired chromenols.…”

Section: Role Of Watermentioning

confidence: 99%

Florol synthesis via Prins cyclization over hierarchical beta zeolites

Shcherban

Barakov²,

Lasne³

et al. 2022

Molecular Catalysis

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Section: Role Of Watermentioning

confidence: 99%

Florol synthesis via Prins cyclization over hierarchical beta zeolites

Shcherban

Barakov²,

Lasne³

et al. 2022

Molecular Catalysis

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“…Benzaldehyde and benzyl alcohol are the simple members of aromatic hydrocarbons and are considered as prime starting materials in various industries such as pharmaceutical, perfumery, soaps, chemicals, and plastic industry . The safer industrial production of these aldehydes and alcohols is still a challenging task; this is mainly done through chlorination of toluene and subsequent hydrolysis .…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidation of Toluene into Benzaldehyde and Benzyl Alcohol Using Molybdenum-Incorporated Manganese Oxide Nanomaterials

et al. 2021

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Oxidation of toluene (an organic pollutant), into useful chemical products, is of great interest nowadays. However, efficient conversion of toluene under mild and sustainable conditions is a thoughtprovoking task. Here, we report MnMoO 4 nanomaterials (CH1−CH2), synthesized through a very facile solvothermal approach. Catalytic efficiencies of MnMoO 4 nanomaterials were evaluated by direct oxidation of toluene via C−H activation. Toluene was converted into benzaldehyde and benzyl alcohol in the presence of H 2 O 2 as an oxidant at 80 °C. The reaction parameters, that is, catalyst dose, time, and toluene concentration, were varied to obtain the optimal conditions for the oxidation process. The 40.62% maximum toluene conversion rate was obtained after 18 h of oxidation activity with 0.06 g of catalyst CH1. A maximum of 78% benzaldehyde selectivity was obtained with 0.06 g of catalyst CH1 after 18 h of toluene oxidation activity. Also, 62.33% benzyl alcohol selectivity was achieved using 0.1 g of catalyst CH1 after 1 h of activity. Several catalytic cycles were run with CH1 to evaluate catalyst reusability. Potential % toluene conversion was obtained for up to six cycles and their turnover frequencies were found to be 1.94−1.01 s −1 . FTIR spectra of catalyst CH1 before and after recovery indicate no significant change. The good conversion rate of toluene and efficient selectivity toward benzaldehyde and benzyl alcohol indicates the robustness and high potential of these catalysts to oxidize toluene under a milder, greener, and hazardous chlorine-free environment.

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“…Benzaldehyde was the species with the most significant contribution to SOAP at both the DZ and the SS site, with an average contribution of 39.3%, while its concentration was only about 2% of the total VOC concentration. Benzaldehyde is an important raw material for pharmaceutical and chemical production [49,50]. Emissions from pharmaceutical companies in the industrial park might have significantly impacted SOA generation in the research area.…”

Section: Soa Formation Potentialmentioning

confidence: 99%

Characteristics, Secondary Transformation Potential and Health Risks of Atmospheric Volatile Organic Compounds in an Industrial Area in Zibo, East China

Wang

Liu

et al. 2023

Atmosphere

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As an important anthropogenic source of volatile organic compounds (VOCs), industrial emissions have a significant impact on air quality and human health. In this study, the characteristics, chemical reactivities, and health risks of VOCs around an industrial park in Zibo were analyzed at two sampling sites. The results showed that the concentrations of total VOCs at Dongzhang Community (DZ) and Special School (SS) sites were 113.12 ppb and 139.40 ppb, respectively, with oxygenated VOCs (OVOCs) as the most abundant species, accounting for 42–45%, followed by alkanes (19.3–19.6%). Diurnal variation of OVOCs exhibited noticeable peaks at 3:00, which may be related to the nighttime sneaky emissions of some enterprises. OVOCs were the species with the highest photochemical activity, with an average contribution of 56.5% to OH radical loss rate and 57% to ozone generation. In addition, OVOCs contributed 40% to secondary organic aerosol formation potential at both sites, second only to aromatics (55%). Acrolein and 1,2-dichloropropane presented the highest non-cancer and cancer risks to human health. The results highlight the importance of OVOCs in some industrial areas.

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Prins cyclisation of (–)-isopulegol with benzaldehyde over ZSM-5 based micro-mesoporous catalysts for production of pharmaceuticals

Cited by 11 publications

References 24 publications

Florol synthesis via Prins cyclization over hierarchical beta zeolites

Florol synthesis via Prins cyclization over hierarchical beta zeolites

Catalytic Oxidation of Toluene into Benzaldehyde and Benzyl Alcohol Using Molybdenum-Incorporated Manganese Oxide Nanomaterials

Characteristics, Secondary Transformation Potential and Health Risks of Atmospheric Volatile Organic Compounds in an Industrial Area in Zibo, East China

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