Functional Group Interconversion Reactions in Continuous Flow Reactors

2021 ◽  
Vol 25 ◽  
Author(s):  
Alexander Leslie ◽  
Angel Maria Joseph ◽  
Marcus Baumann
Keyword(s):  
Continuous Flow ◽  
Functional Group ◽  
Modern Synthesis ◽  
Flow Reactors ◽  
Flow Synthesis ◽  
Specific Reaction ◽  
Solid Foundation ◽  
Continuous Flow Reactors ◽  
Flow Techniques

: An overview of the current uptake of continuous flow techniques for various functional group interconversion reactions is presented. Besides highlighting a variety of prominent examples and their main features, this review provides insights into specific reaction classes, such as oxidations, reductions, rearrangements as well as different C-H functionalization processes. While this review can only include key examples from the last decade, the reader will find a solid foundation of important transformations along with further references to inform and appreciate the opportunities arising from modern synthesis technologies such as flow synthesis.

Integrated Synthesis Using Isothiocyanate-Substituted Aryllithiums by Flow Chemistry

Synlett ◽  
2020 ◽  
Vol 31 (19) ◽  
pp. 1899-1902
Author(s):  
Jun-ichi Yoshida ◽  
Heejin Kim ◽  
Hyune-Jea Lee ◽  
Daiki Torii ◽  
Yongju Jeon
Keyword(s):  
Biological Activity ◽  
Exchange Reaction ◽  
Continuous Flow ◽  
Functional Group ◽  
Flow Chemistry ◽  
Fluorescent Labeling ◽  
Pharmaceutical Chemistry ◽  
Flow Reactors ◽  
Flow Generation ◽  
Continuous Flow Reactors

The isothiocyanate (NCS) group is an attractive functional group in the field of organic and pharmaceutical chemistry. It can be transformed into other heteroatomic functional groups. It usually acts as the inductive group of biological activity and has also been traditionally used as the fluorescent-labeling reagent. However, it is not compatible with strong bases. When the NCS group is at para position in halobenzenes, it generally undergoes nucleophilic additions upon reaction with strong bases. To the best of our knowledge, there is currently no general methodology for the formation and reactions of NCS-functionalized aryllithiums for meta and para substituents. Herein, we report the continuous-flow generation of NCS-substituted aryllithiums from the corresponding haloarenes via a selective halogen–lithium exchange reaction and its reaction with various electrophiles to yield NCS-containing products. We also achieved an integrated synthesis through sequential reactions of the NCS-containing compounds with additional nucleophiles using the continuous-flow reactors.

Pt-Catalyzed selective oxidation of alcohols to aldehydes with hydrogen peroxide using continuous flow reactors

2021 ◽  
Vol 19 (5) ◽  
pp. 1115-1121
Author(s):  
Yoshihiro Kon ◽  
Takuya Nakashima ◽  
Akira Yada ◽  
Tadahiro Fujitani ◽  
Shun-ya Onozawa ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Oxidation ◽  
Continuous Flow ◽  
Fine Chemicals ◽  
Flow Reactors ◽  
Flow Synthesis ◽  
Oxidation Of Alcohols ◽  
Continuous Flow Reactors ◽  
Pt Catalyzed

Pt-catalyzed continuous flow synthesis of aldehydes from alcohols has been developed, in which various aldehydes for obtaining valuable fine chemicals were given in up to 98% yields for over 5 days by using hydrogen peroxide as an oxidant.

Continuous flow reactors: a perspective

2012 ◽  
Vol 14 (1) ◽  
pp. 38-54 ◽  
Author(s):  
Charlotte Wiles ◽  
Paul Watts
Keyword(s):  
Continuous Flow ◽  
Flow Reactors ◽  
Continuous Flow Reactors

Synthesis of Tailored Segmented Polyurethanes Utilizing Continuous-Flow Reactors and Real-Time Process Monitoring

2021 ◽  
Author(s):  
Xabier Lopez de Pariza ◽  
Tim Erdmann ◽  
Pedro L. Arrechea ◽  
Leron Perez ◽  
Charles Dausse ◽  
...  
Keyword(s):  
Real Time ◽  
Process Monitoring ◽  
Continuous Flow ◽  
Time Process ◽  
Flow Reactors ◽  
Segmented Polyurethanes ◽  
Continuous Flow Reactors

Visible light-induced iniferter polymerization of methacrylates enhanced by continuous flow

2017 ◽  
Vol 8 (42) ◽  
pp. 6496-6505 ◽  
Author(s):  
Maarten Rubens ◽  
Phanumat Latsrisaeng ◽  
Tanja Junkers
Keyword(s):  
Block Copolymers ◽  
Visible Light ◽  
Continuous Flow ◽  
Flow Reactors ◽  
Continuous Flow Reactors

Visible-light induced photoiniferter polymerization in continuous flow reactors is very efficient in yielding low dispersity methacrylate block copolymers.

scholarly journals Diels–Alder reactions of myrcene using intensified continuous-flow reactors

2017 ◽  
Vol 13 ◽  
pp. 120-126 ◽  
Author(s):  
Christian H Hornung ◽  
Miguel Á Álvarez-Diéguez ◽  
Thomas M Kohl ◽  
John Tsanaktsidis
Keyword(s):  
Continuous Flow ◽  
Flow Reactor ◽  
Scale Up ◽  
Reaction Times ◽  
Alder Reaction ◽  
Diels Alder ◽  
Flow Reactors ◽  
Diels Alder Reaction ◽  
Naturally Occurring ◽  
Continuous Flow Reactors

This work describes the Diels–Alder reaction of the naturally occurring substituted butadiene, myrcene, with a range of different naturally occurring and synthetic dienophiles. The synthesis of the Diels–Alder adduct from myrcene and acrylic acid, containing surfactant properties, was scaled-up in a plate-type continuous-flow reactor with a volume of 105 mL to a throughput of 2.79 kg of the final product per day. This continuous-flow approach provides a facile alternative scale-up route to conventional batch processing, and it helps to intensify the synthesis protocol by applying higher reaction temperatures and shorter reaction times.

Synthesis of cyclic organic carbonates via catalytic oxidative carboxylation of olefins in flow reactors

2017 ◽  
Vol 7 (1) ◽  
pp. 84-89 ◽  
Author(s):  
Ajay A. Sathe ◽  
Anirudh M. K. Nambiar ◽  
Robert M. Rioux
Keyword(s):  
Carbon Dioxide ◽  
Continuous Flow ◽  
Catalytic Conversion ◽  
Cyclic Carbonates ◽  
Flow Reactors ◽  
Organic Carbonates ◽  
Continuous Flow Reactors

The direct catalytic conversion of olefins into cyclic carbonates using peroxide and carbon dioxide is demonstrated using continuous flow reactors.

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