Microwave assisted solvent free synthesis of α,ά-bis (arylidene) cycloalkanones by sulfated zirconia catalyzed cross aldol condensation of aromatic aldehydes and cycloalkanones

Rawal, Kirat; Mishra, Manish; Dixit, Manish; Srinivasarao, Meka

doi:10.1016/j.jiec.2012.02.011

Cited by 13 publications

(1 citation statement)

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“…Therefore, the same increase can be obtained in industrial biochemical reaction using EM field as heating source [ Akiyama et al, ]. Actually, EM heating is more effective [ Rawal et al, ; Monteil‐Rivera and Paquet, ; Keglevich et al, ] and faster than traditional heating since the heat is produced directly into the reactive solution [ Guo et al, ]. Furthermore, reaction enhancement due to EM heating is stronger than the traditional one (at the same temperature).…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of a microwave irradiated and resonant continuous biochemical reactor

et al. 2016

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The design of a microwave irradiated enzyme (biochemical) reactor is here presented. It consists of a suitable higher‐order mode resonant cavity which contains several tubes where the solution containing reagents and products flow in the laminar flow regime. The process evolution under irradiation has then been simulated using the COMSOL multiphysics environment. As an example, the enzymatic hydrolysis reaction of sucrose has been considered. The results of the multiphysics simulation show that such a reactor can be used to effectively perform the reaction process in the optimal conditions for maximizing the reaction rate and preventing the enzyme deactivation by a precise knowledge of the temperature distribution and its strict control.

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Section: Introductionmentioning

confidence: 99%

Design and optimization of a microwave irradiated and resonant continuous biochemical reactor

et al. 2016

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Green, rapid, and highly efficient syntheses of α,α′‐bis[(aryl or allyl)idene]cycloalkanones and 2‐[(aryl or allyl)idene]‐1‐indanones as potentially biologic compounds via solvent‐free microwave‐assisted Claisen–Schmidt condensation catalyzed by MoCl₅

Bakhshi

Zeynizadeh

Mousavi

2019

J Chinese Chemical Soc

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Green, rapid, and highly efficient syntheses of α,α 0 -bis [(aryl or allyl)idene]cycloalkanones and 2-[(aryl or allyl)idene]-1-indanones as potentially biologic compounds via solvent-free microwave-assisted Claisen-Schmidt condensation catalyzed by MoCl 5 Abstract A new, green, and highly efficient protocol for the expeditious preparation of some α,α 0 -bis[(aryl or allyl)idene]cycloalkanones and 2-[(aryl or allyl)idene]-1-indanones via a simple microwave-assisted Claisen-Schmidt condensation reaction catalyzed by MoCl 5 was successfully developed. Outstanding features of the current methodology include the use of solvent-free conditions, simple operation, use of a very inexpensive and available catalyst, low catalyst loading, short reaction times, high yields of the pure products, no harmful by-products, easy workup, and also the applicability of microwave irradiation as a clean source of energy. Furthermore, a gram-scale reaction was successfully conducted, proving the scalability of this current Claisen-Schmidt condensation reaction. K E Y W O R D S

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Claisen‐Schmidt Condensation using Green Catalytic Processes: A Critical Review

Yadav

Wagh

2020

ChemistrySelect

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Claisen‐Schmidt condensation have historical significance for over140 years and the scope was expanded due to the realization that chalcones so synthesized possess biological activity. The principles of green chemistry with emphasis on use of different solid catalysts with proper distribution of active centers such as acid, base, acid‐base, organo‐ were used along with solvent‐less systems. Among solid bases layered double hydroxides (LDH)/hydrotalcites are the most common. The limitations of solid bases are overcome by solid acids and superacids. A number of metal oxide supports are used. MOFs are increasingly being used. Complex organo‐catalysts are employed for getting excellent regio‐selectivity. In certain metal oxides, both acidic and basic sites co‐exist on the pore surface of catalyst which offer superior results. Synergism of solid catalysis using microwaves and ultrasound to intensify rates and selectivity is in vogue.Controlled pore structure and distribution of active catalytic centers, whether mono‐, bi‐ or tri‐functional catalysts, will give better green and smart processes. The review gives a critical analysis of the area and presents future directions for research.

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Microwave assisted solvent free synthesis of α,ά-bis (arylidene) cycloalkanones by sulfated zirconia catalyzed cross aldol condensation of aromatic aldehydes and cycloalkanones

Cited by 13 publications

References 65 publications

Design and optimization of a microwave irradiated and resonant continuous biochemical reactor

Design and optimization of a microwave irradiated and resonant continuous biochemical reactor

Green, rapid, and highly efficient syntheses of α,α′‐bis[(aryl or allyl)idene]cycloalkanones and 2‐[(aryl or allyl)idene]‐1‐indanones as potentially biologic compounds via solvent‐free microwave‐assisted Claisen–Schmidt condensation catalyzed by MoCl₅

Claisen‐Schmidt Condensation using Green Catalytic Processes: A Critical Review

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Microwave assisted solvent free synthesis of α,ά-bis (arylidene) cycloalkanones by sulfated zirconia catalyzed cross aldol condensation of aromatic aldehydes and cycloalkanones

Cited by 13 publications

References 65 publications

Design and optimization of a microwave irradiated and resonant continuous biochemical reactor

Design and optimization of a microwave irradiated and resonant continuous biochemical reactor

Green, rapid, and highly efficient syntheses of α,α′‐bis[(aryl or allyl)idene]cycloalkanones and 2‐[(aryl or allyl)idene]‐1‐indanones as potentially biologic compounds via solvent‐free microwave‐assisted Claisen–Schmidt condensation catalyzed by MoCl5

Claisen‐Schmidt Condensation using Green Catalytic Processes: A Critical Review

Contact Info

Product

Resources

About

Green, rapid, and highly efficient syntheses of α,α′‐bis[(aryl or allyl)idene]cycloalkanones and 2‐[(aryl or allyl)idene]‐1‐indanones as potentially biologic compounds via solvent‐free microwave‐assisted Claisen–Schmidt condensation catalyzed by MoCl₅