Pentavalent Organobismuth Reagents in Organic Synthesis: Alkylation, Alcohol Oxidation and Cationic Photopolymerization

2011 ◽  
pp. 19-44 ◽  
Author(s):  
Yoshihiro Matano
Keyword(s):  
Organic Synthesis ◽  
Alcohol Oxidation ◽  
Cationic Photopolymerization

scholarly journals Biocatalysis with Laccases: An Updated Overview

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 26
Author(s):  
Ivan Bassanini ◽  
Erica Elisa Ferrandi ◽  
Sergio Riva ◽  
Daniela Monti
Keyword(s):  
Organic Synthesis ◽  
Alcohol Oxidation ◽  
Industrial Processes ◽  
Organic Substrates ◽  
Fine Chemicals ◽  
Multicopper Oxidases ◽  
Carbohydrate Chemistry ◽  
Nucleophilic Substitutions ◽  
Mediator System ◽  
Integrated Processes

Laccases are multicopper oxidases, which have been widely investigated in recent decades thanks to their ability to oxidize organic substrates to the corresponding radicals while producing water at the expense of molecular oxygen. Besides their successful (bio)technological applications, for example, in textile, petrochemical, and detoxifications/bioremediations industrial processes, their synthetic potentialities for the mild and green preparation or selective modification of fine chemicals are of outstanding value in biocatalyzed organic synthesis. Accordingly, this review is focused on reporting and rationalizing some of the most recent and interesting synthetic exploitations of laccases. Applications of the so-called laccase-mediator system (LMS) for alcohol oxidation are discussed with a focus on carbohydrate chemistry and natural products modification as well as on bio- and chemo-integrated processes. The laccase-catalyzed Csp2-H bonds activation via monoelectronic oxidation is also discussed by reporting examples of enzymatic C-C and C-O radical homo- and hetero-couplings, as well as of aromatic nucleophilic substitutions of hydroquinones or quinoids. Finally, the laccase-initiated domino/cascade synthesis of valuable aromatic (hetero)cycles, elegant strategies widely documented in the literature across more than three decades, is also presented.

scholarly journals Recent Advances in Copper Catalyzed Alcohol Oxidation in Homogeneous Medium

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 748 ◽  
Author(s):  
Telma F. S. Silva ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Organic Synthesis ◽  
Alternative Energy ◽  
Copper Complexes ◽  
Homogeneous Medium ◽  
Alcohol Oxidation ◽  
Short Review ◽  
Secondary Alcohols ◽  
Alternative Energy Source ◽  
Use Of Resources ◽  
Oxidation Of Alcohols

The development of sustainable processes and products through innovative catalytic materials and procedures that allow a better use of resources is undoubtedly one of the most significant issues facing researchers nowadays. Environmental and economically advanced catalytic processes for selective oxidation of alcohols are currently focused on designing new catalysts able to activate green oxidants (dioxygen or peroxides) and applying unconventional conditions of sustainable significance, like the use of microwave irradiation as an alternative energy source. This short review aims to provide an overview of the recently (2015–2020) discovered homogeneous aerobic and peroxidative oxidations of primary and secondary alcohols catalyzed by copper complexes, highlighting new catalysts with potential application in sustainable organic synthesis, with significance in academia and industry.

Lithiated γ-Tosyl-Substituted Benzylmethallylamine:  New γ-Amino Methallyl Sulfone Anions in Organic Synthesis

1997 ◽  
Vol 62 (5) ◽  
pp. 1564-1564
Author(s):  
Diego A. Alonso ◽  
Larry R. Falvello ◽  
Balbino Mancheño ◽  
Carmen Nájera ◽  
Milagros Tomás
Keyword(s):  
Organic Synthesis
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