Heterogeneous Catalysis for Tandem Reactions

Climent, María J.; Corma, Avelino; Iborra, Sara; Sabater, Marı́a J.

doi:10.1021/cs401052k

Cited by 331 publications

(236 citation statements)

References 186 publications

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“…79 As was presented in sections 3.1 and 3.2, the LDHs and derived catalysts are characterized by multifunctional properties, going from the presence of acidic-basic sites with different nature and strengths, to the stabilization of metallic nanoparticles (both monometallic and bimetallic NPs). The design and finetuning of the specific functionalities will depend on the catalytic reaction for which the LDH-type catalysts will be used.…”

Section: Multifunctional Catalystsmentioning

confidence: 98%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

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Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase. Among these processes, the valorization/upgrading of lignocellulosic biomass and derived molecules have attracted enormous attention because it constitutes a pivotal axis in the transition from an economic model based on fossil resources to one based on renewable biomass resources with preference for biomass waste streams. Proof of this is the increasing amount of literature reports regarding the rational design and implementation of LDHs and related materials in catalytic processes such as: depolymerization, hydrogenation, selective oxidations, and C-C coupling reactions, among others, where biomass-derived compounds are used. The major aim of this contribution is to situate the most recent advances on the implementation of these types of catalysts into a lignocellulosic-feedstock biorefinery scheme, highlighting the versatility of LDHs and derived materials as multifunctional, tunable, cheap and easy to produce heterogeneous catalysts.

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Section: Multifunctional Catalystsmentioning

confidence: 98%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

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“…Such as the reaction of Baeyer-Villiger [7,11,12]; Meerwein-Ponndorf-Verley [13]; isomerization of hydrocarbons, obtained from biomass [9]. Such reactions involve molecules with a diameter of up to 10 Å.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Modeling the heterogeneous catalytic recovery processes of aldehydes and ketones

Skoretska

Beznosyk

2017

EEJET

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Досліджено дві гетерогенні каталітичні реакції віднов-лення за механізмом Меєрвейна-Понндорфа-Верлея -від-новлення анісового альдегіду з подальшою етерифікаці-єю та циклогексанону. Побудовано математичні моделі досліджених процесів. Проаналізовано активність трьох каталізаторів, за участі яких відбувалась реакція віднов-лення циклогексанону, та обрано для подальших розра-хунків найактивніший. Розраховано константи швидко-сті досліджених реакцій відновлення альдегідів та кетонів Ключові слова: механізм Меєрвейна-Понндорфа-Верлея, зворотна задача кінетики, константа швидкості, гетерогенний каталіз, цеоліти Исследованы две гетерогенные каталитические реак-ции восстановления по механизму Меервейна-Понндорфа-Верлея -восстановление анисового альдегида с после-дующей этерификацией и циклогексанона. Построены математические модели исследованных процессов. Проанализирована активность трех катализаторов, при участии которых происходила реакция восстановления циклогексанона, и выбран для дальнейших расчетов наи-более активный. Рассчитаны константы скорости иссле-дованных реакций восстановления альдегидов и кетонов Ключевые слова: механизм Меервейна-Понндорфа-Верлея, обратная задача кинетики, константа скорости, гетерогенный катализ, цеолиты UDC 544.4

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“…The option to carry out multistep chemical transformations in one pot would be of great interest for the synthesis of pharmaceuticals [5]. Heterogeneous catalysts are viable options [6] as multifunctional heterogeneous catalysts and furthermore, different solids can be used to support sites that would otherwise be mutually incompatible in one reaction system [7].…”

Section: Introductionmentioning

confidence: 99%

Application of Heterogeneous Catalysts in the First Steps of the Oseltamivir Synthesis

Fraile

Saavedra

2017

Catalysts

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Abstract:The first steps of oseltamivir synthesis from quinic acid involve acetalization and ester formation. These reactions are catalyzed by either acids or bases, which may be accomplished by heterogeneous catalysts. Sulfonic solids are efficient acid catalysts for acetalization and esterification reactions. Supported tetraalkylammonium hydroxide or 1,5,7-triazabicyclo[4.4.0]dec-5-ene are also efficient base catalysts for lactone alcoholysis and in this work, these catalysts have been applied in two alternative synthetic routes that lead to oseltamivir. The classical route consists of an acetalization, followed by a lactonization, and then a lactone alcoholysis. This achieves a 66% isolated yield. The alternative route consists of esterification followed by acetalization and is only efficient when an acetone acetal is used.

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Heterogeneous Catalysis for Tandem Reactions

Cited by 331 publications

References 186 publications

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Modeling the heterogeneous catalytic recovery processes of aldehydes and ketones

Application of Heterogeneous Catalysts in the First Steps of the Oseltamivir Synthesis

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