scholarly journals A comprehensive review of flow chemistry techniques tailored to the flavours and fragrances industries

2021 ◽  
Vol 17 ◽  
pp. 1181-1312
Author(s):  
Guido Gambacorta ◽  
James S Sharley ◽  
Ian R Baxendale
Keyword(s):  
Physical Properties ◽  
Organic Synthesis ◽  
Continuous Flow ◽  
Flow Chemistry ◽  
Comprehensive Review ◽  
Volatile Liquids

Due to their intrinsic physical properties, which includes being able to perform as volatile liquids at room and biological temperatures, fragrance ingredients/intermediates make ideal candidates for continuous-flow manufacturing. This review highlights the potential crossover between a multibillion dollar industry and the flourishing sub-field of flow chemistry evolving within the discipline of organic synthesis. This is illustrated through selected examples of industrially important transformations specific to the fragrances and flavours industry and by highlighting the advantages of conducting these transformations by using a flow approach. This review is designed to be a compendium of techniques and apparatus already published in the chemical and engineering literature which would constitute a known solution or inspiration for commonly encountered procedures in the manufacture of fragrance and flavour chemicals.

Recent Applications of Continuous Flow in Homogeneous Palladium Catalysis

Synthesis ◽  
2020 ◽  
Vol 52 (23) ◽  
pp. 3511-3529 ◽  
Author(s):  
Peter Koóš ◽  
Martin Markovič ◽  
Pavol Lopatka ◽  
Tibor Gracza
Keyword(s):  
Organic Synthesis ◽  
Continuous Flow ◽  
Palladium Catalysis ◽  
Flow Chemistry ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Flow Conditions ◽  
Cross Coupling Reactions ◽  
Continuous Flow Chemistry ◽  
Oxidative Transformations

Considerable advances have been made using continuous flow chemistry as an enabling tool in organic synthesis. Consequently, the number of articles reporting continuous flow methods has increased significantly in recent years. This review covers the progress achieved in homogeneous palladium catalysis using continuous flow conditions over the last five years, including C–C/C–N cross-coupling reactions, carbonylations and reductive/oxidative transformations.1 Introduction2 C–C Cross-Coupling Reactions3 C–N Coupling Reactions4 Carbonylation Reactions5 Miscellaneous Reactions6 Key to Schematic Symbols7 Conclusion

Room Temperature Flow Electrochemistry as a Means of Retaining the “Memory of Chirality” via Hofer Moest Type Reaction

2020 ◽  
Author(s):  
Tomas Hardwick ◽  
Rossana Cicala ◽  
Nisar Ahmed
Keyword(s):  
Continuous Flow ◽  
Room Temperature ◽  
Biological Activities ◽  
Supporting Electrolyte ◽  
Enantiomeric Excess ◽  
Flow Chemistry ◽  
Batch Processes ◽  
Enabling Technology ◽  
Chiral Compounds ◽  
Memory Of Chirality

<p>Many chiral compounds have become of great interest to the pharmaceutical industry as they possess various biological activities. Concurrently, the concept of “memory of chirality” has been proven as a powerful tool in asymmetric synthesis, while flow chemistry has begun its rise as a new enabling technology to add to the ever increasing arsenal of techniques available to the modern day chemist. Here, we have employed a new simple electrochemical microreactor design to oxidise an L-proline derivative at room temperature in continuous flow. Flow performed in microreactors offers up a number of benefits allowing reactions to be performed in a more convenient and safer manner, and even allow electrochemical reactions to take place without a supporting electrolyte due to a very short interelectrode distance. By the comparison of electrochemical oxidations in batch and flow we have found that continuous flow is able to outperform its batch counterpart, producing a good yield (71%) and a better enantiomeric excess (64%) than batch with a 98% conversion. We have, therefore, provided evidence that continuous flow chemistry has the potential to act as a new enabling technology to replace some aspects of conventional batch processes. </p>

scholarly journals Application of Reactor Engineering Concepts in Continuous Flow Chemistry: A Review

2021 ◽  
Author(s):  
Nicole Candice Neyt ◽  
Darren Lyall Riley
Keyword(s):  
Rapid Growth ◽  
Continuous Flow ◽  
Flow Chemistry ◽  
The Past ◽  
Continuous Flow Chemistry

The adoption of flow technology for the manufacture of chemical entities, and in particular pharmaceuticals, has seen rapid growth over the past two decades with the technology now blurring the...

Microwave-Assisted Grafting to MCM-41 Silica and its Application as Catalyst in Flow Chemistry

2011 ◽  
Vol 64 (11) ◽  
pp. 1522 ◽  
Author(s):  
Manuela Oliverio ◽  
Antonio Procopio ◽  
Toma N. Glasnov ◽  
Walter Goessler ◽  
C. Oliver Kappe
Keyword(s):  
Continuous Flow ◽  
Rate Increase ◽  
Flow Chemistry ◽  
Conventional Heating ◽  
Kinetic Effect ◽  
Microwave Technology ◽  
Microwave Assisted ◽  
Technology Control ◽  
First Time ◽  
Mcm 41

Finding environmentally gentle methods to graft Lewis acid on the surface of mesoporous materials is a topic of current interest. Herein we describe the optimization of a preparation procedure of a mesoporous silica-supported ErIII catalyst using the microwave-assisted post-calcination functionalization of Mobil Composition of Matter-41 silica as the key step. The required time for functionalization was reduced from several hours to 10 min using sealed-vessel microwave technology. Control experiments using conventional heating at the same temperature demonstrated that the rate increase is owing to a simple thermal/kinetic effect as a result of the higher reaction temperature. The resulting ErIII catalyst was tested for the first time as a catalyst in the continuous flow deprotection of benzaldehyde dimethylacetal and a complete leaching study was performed.

scholarly journals Continuous-flow chemistry in chemical education

2017 ◽  
Vol 7 (3–4) ◽  
pp. 157-158 ◽  
Author(s):  
Daniel Blanco-Ania ◽  
Floris P. J. T. Rutjes
Keyword(s):  
Continuous Flow ◽  
Chemical Education ◽  
Flow Chemistry ◽  
Continuous Flow Chemistry

ChemInform Abstract: Continuous Flow Chemistry: A Discovery Tool for New Chemical Reactivity Patterns.

ChemInform ◽  
2014 ◽  
Vol 45 (44) ◽  
pp. no-no
Author(s):  
Jan Hartwig ◽  
Jan B. Metternich ◽  
Nikzad Nikbin ◽  
Andreas Kirschning ◽  
Steven V. Ley
Keyword(s):  
Continuous Flow ◽  
Chemical Reactivity ◽  
Flow Chemistry ◽  
Continuous Flow Chemistry

Towards 4th industrial revolution efficient and sustainable continuous flow manufacturing of active pharmaceutical ingredients

2022 ◽  
Author(s):  
Cloudius Sagandira ◽  
Sinazo Nqeketo ◽  
Kanysile Mhlana ◽  
Thembela Sonti ◽  
Paul Watts ◽  
...  
Keyword(s):  
Pharmaceutical Industry ◽  
Continuous Flow ◽  
Industrial Revolution ◽  
Flow Chemistry ◽  
Active Pharmaceutical Ingredients ◽  
New Paradigm ◽  
Pharmaceutical Ingredients ◽  
Continuous Flow Chemistry

Continuous flow chemistry has opened a new paradigm in both the laboratory and pharmaceutical industry. This review details the recently reported literature on continuous multistep telescoped synthesis of active pharmaceutical...

Design automation for continuous-flow microfluidic biochips: A comprehensive review

Integration ◽  
2021 ◽  
Author(s):  
Genggeng Liu ◽  
Hongbin Huang ◽  
Zhisheng Chen ◽  
Hongxing Lin ◽  
Hui Liu ◽  
...  
Keyword(s):  
Design Automation ◽  
Continuous Flow ◽  
Comprehensive Review ◽  
Microfluidic Biochips
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