A Simple Continuous Flow Microwave Reactor

2005 ◽  
Vol 70 (17) ◽  
pp. 7003-7006 ◽  
Author(s):  
Mark C. Bagley ◽  
Robert L. Jenkins ◽  
M. Caterina Lubinu ◽  
Christopher Mason ◽  
Robin Wood
ChemInform ◽  
2011 ◽  
Vol 43 (2) ◽  
pp. no-no
Author(s):  
Stefan Koch ◽  
Holger Loewe ◽  
Horst Kunz

RSC Advances ◽  
2018 ◽  
Vol 8 (13) ◽  
pp. 7029-7039 ◽  
Author(s):  
Emanuela Calcio Gaudino ◽  
Maela Manzoli ◽  
Diego Carnaroglio ◽  
Zhilin Wu ◽  
Giorgio Grillo ◽  
...  

A novel protocol for microwave-assisted alkyne semi-hydrogenation under heterogeneous catalysis in a continuous flow reactor is reported herein.


2010 ◽  
Vol 14 (4) ◽  
pp. 926-930 ◽  
Author(s):  
Fabio Bergamelli ◽  
Mauro Iannelli ◽  
Jameel A. Marafie ◽  
Jonathan D. Moseley

Synlett ◽  
2011 ◽  
Vol 2011 (14) ◽  
pp. 1978-1982 ◽  
Author(s):  
Horst Kunz ◽  
Stefan Koch ◽  
Holger Löwe

1997 ◽  
Vol 50 (9) ◽  
pp. 921 ◽  
Author(s):  
Laurence Bagnell ◽  
Marianne Bliese ◽  
Teresa Cablewski ◽  
Christopher R. Strauss ◽  
John Tsanaktsidis

A moderately yielding (50±4%) method for obtaining 3-methylcyclopent-2-en-1-one from hexane-2,5-dione in ≥99·5% purity was developed, using 2·1% (w/v) of aqueous KOH at reflux. However, the yield was increased to 80±5% by using considerably lower concentrations of base (<0·1%) and higher temperature (200°C) with a conventionally heated autoclave or a microwave batch reactor. The preparation was scaled up with a larger autoclave and also with a continuous flow microwave reactor. The dione impurity was removed from the enone by preferential adsorption on an anion-exchange resin in the bisulfite form. The product was recovered from the aqueous phase with a hydrophobic resin. This environmentally benign, non-extractive isolation method has potential for broad applicability in cleaner production.


2019 ◽  
Vol 91 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Erika Bálint ◽  
Ádám Tajti ◽  
Katalin Ladányi-Pára ◽  
Nóra Tóth ◽  
Béla Mátravölgyi ◽  
...  

AbstractThe synthesis of α-aryl-α-aminophosphonates was performed by the three-component Kabachnik-Fields reaction of primary amines, benzaldehyde derivatives and dialkyl phosphites in a continuous flow microwave reactor. The target compounds could be obtained in high (~90%) yields without any catalyst in simple alcohols as the solvent. The flow process elaborated required shorter reaction times and lower excess of the reagent, as compared to the “traditional” batch reactions, and allowed the synthesis of the α-aminophosphonates on a somewhat larger scale.


2015 ◽  
Vol 83 ◽  
pp. 25-29 ◽  
Author(s):  
I. Choedkiatsakul ◽  
K. Ngaosuwan ◽  
S. Assabumrungrat ◽  
S. Mantegna ◽  
G. Cravotto

2011 ◽  
Vol 7 ◽  
pp. 1360-1371 ◽  
Author(s):  
Charlotte Wiles ◽  
Paul Watts

Whilst microwave heating has been widely demonstrated as a synthetically useful tool for rapid reaction screening, a microwave-absorbing solvent is often required in order to achieve efficient reactant heating. In comparison, microreactors can be readily heated and pressurised in order to “super-heat” the reaction mixture, meaning that microwave-transparent solvents can also be employed. To demonstrate the advantages associated with microreaction technology a series of SNAr reactions were performed under continuous flow by following previously developed microwave protocols as a starting point for the investigation. By this approach, an automated microreaction platform (Labtrix® S1) was employed for the continuous flow synthesis of diaryl ethers at 195 °C and 25 bar, affording a reduction in reaction time from tens of minutes to 60 s when compared with a stopped-flow microwave reactor.


2013 ◽  
Vol 52 (12) ◽  
pp. 4683-4687 ◽  
Author(s):  
Masateru Nishioka ◽  
Masato Miyakawa ◽  
Yohei Daino ◽  
Haruki Kataoka ◽  
Hidekazu Koda ◽  
...  

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