Aqueous Asymmetric 1,4-Addition of Arylboronic Acids to Enones Catalyzed by an Amphiphilic Resin-Supported Chiral Diene Rhodium Complex under Batch and Continuous-Flow Conditions

2018 ◽  
Vol 83 (14) ◽  
pp. 7380-7387 ◽  
Author(s):  
Guanshuo Shen ◽  
Takao Osako ◽  
Makoto Nagaosa ◽  
Yasuhiro Uozumi
2021 ◽  
Vol 50 (7) ◽  
pp. 2493-2500
Author(s):  
Sara Rojas ◽  
Jorge A. R. Navarro ◽  
Patricia Horcajada

A defective Metal-Organic Frameworks as an improved material for the construction of a fixed-bed system working under continuous flow conditions for the removal of the emerging contaminant atenolol.


Tetrahedron ◽  
2021 ◽  
pp. 132305
Author(s):  
Harry R. Smallman ◽  
Jamie A. Leitch ◽  
Tom McBride ◽  
Steven V. Ley ◽  
Duncan L. Browne

Author(s):  
Paolo Zardi ◽  
Michele Maggini ◽  
Tommaso Carofiglio

AbstractThe post-functionalization of porphyrins through the bromination in β position of the pyrrolic rings is a relevant transformation because the resulting bromoderivatives are useful synthons to covalently link a variety of chemical architectures to a porphyrin ring. However, single bromination of porphyrins is a challenging reaction for the abundancy of reactive β-pyrrolic positions in the aromatic macrocycle. We herein report a synthetic procedure for the efficient preparation of 2-bromo-5,10,15,20-tetraphenylporphyrin (1) under continuous flow conditions. The use of flow technology allows to reach an accurate control over critical reaction parameters such as temperature and reaction time. Furthermore, by performing the optimization process through a statistical DoE (Design of Experiment) approach, these parameters could be properly adjusted with a limited number of experiments. This process led us to a better understanding of the relevant factors that govern porphyrins monobromination and to obtain compound 1 with an unprecedent 80% yield.


2005 ◽  
Vol 34 (11) ◽  
pp. 1480-1481 ◽  
Author(s):  
Tamio Hayashi ◽  
Norihito Tokunaga ◽  
Kazuhiro Okamoto ◽  
Ryo Shintani

2010 ◽  
Vol 2010 (12) ◽  
pp. 2270-2274 ◽  
Author(s):  
Luke R. Odell ◽  
Jonas Lindh ◽  
Tomas Gustafsson ◽  
Mats Larhed

RSC Advances ◽  
2014 ◽  
Vol 4 (26) ◽  
pp. 13620-13625 ◽  
Author(s):  
Amanda S. de Miranda ◽  
Rodrigo O. M. A. de Souza ◽  
Leandro S. M. Miranda

The chemoenzymatic dynamic kinetic resolution of (+/−)-α-methylbenzylamine under continuous flow conditions in the presence of Pd/BaSO4as racemization catalyst and ammonium formate as reductant is described.


2008 ◽  
Vol 18 (6) ◽  
pp. 922-927 ◽  
Author(s):  
Suk Fun Chin ◽  
K. Swaminathan Iyer ◽  
Colin L. Raston ◽  
Martin Saunders

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