Current Organocatalysis

A large quantity of organic waste is generated from our daily life and industrial or agricultural production, and it can be oxidized for energy recovery or converted to useful chemicals through many different methods, for example, incineration, pyrolysis, gasification, liquefaction, fermentation, composting, anaerobic digestion, etc. [1] In comparison to these methods, advanced oxidation processes (AOPs) have substantial advantages of high treatment efficiency, clean and simple process, and complete mineralization of organic pollutants [2]. Reactive oxygen species (ROSs) can be produced in-situ using AOPs via the activation of oxidants including O2, H2O2, O3, persulfate, Cl2, etc. [3] In recent years, AOPs have been widely used for the treatment of refractory organic pollutants, sewage sludge, and industrial organic wastewater, and their rapid development is worth a deep investigation. Under this background, the thematic issue “catalytic processes for organic wastes utilization and pollutants removal” concludes the recent progress in catalytic oxidation of organic waste or wastewater. Photocatalytic treatment exhibits good performance in degrading organic pollutants or transforming inorganic pollutants without chemicals consumption, and the development of multilevel-structure TiO2-based nanocomposite catalysts is emphasized. The first contribution of this thematic issue, titled “Photocatalytic treatment of environmental pollutants using multilevelstructure TiO2-based organic and inorganic nanocomposites”, provides comprehensive reviews on these progresses and development directions [4]. Some types of wastewater contain refractory substances like antibotics, dyes, lignin, and humic acid, and conventional biological treatment is invalid. Catalytic air oxidation processes can achieve their mineralization in an economical way. The second contribution of this thematic issue, titled “Catalytic air oxidation of refractory organics in wastewater” analyzes the new findings on suitable catalysts and their mechanisms [5]. Sewage sludge is a complex waste sourced from wastewater treatment plants, and wet air oxidation, an efficient and clean technology, has been put into the practice of sludge treatment. New catalysts are expected to improve the performance of this process with strong durability and recyclability. The third contribution of this thematic issue, titled “Catalytic wet air oxidation of sewage sludge: a review” addressed the development and challenges in this field [6]. I appreciate all the contributors for accepting my invitation and their valuable contribution to this thematic issue. I am thankful to the editorial team and journal managers of Current Organocat

Indeed, it is a great pleasure to write an overview of all papers published in Current Organocatalysis (COCAT) in 2019, volume 6 (2). The COCAT has been publishing significant research papers for the past years. The publications in COCAT are extremely diverse since methods used are powerful in the synthesis and biological studies of a variety of structures. In this issue, the following papers are published. Saha and Mukhopadhyay have written the use of nanoparticles for the synthesis of numerous heterocycles and their effective functionalization through carbon- hydrogen bond activation. Sahoo and Banik have focused on the applications of organocatalysis in medicinal chemistry. Pan and Ganguly have assessed chitosan-based organocatalysis. Sinha has investigated oxidation of alcohols catalyzed by ruthenium- and osmium carbonyl complexes. Sahoo and Banik have reported the application of Baker’s Yeast in synthesis. Mondal and Bhowmick have reported asymmetric aldol reaction mediated by optically tartrate in aqueous media. Zhao et al. studied bifunctional catalysts for aldol reaction by probing the remote amide hydrogen. Banerjee et al. explored on the clean synthesis of pyran compounds using magnetically separable catalyst. The above description demonstrates that different types of current research are included in this special issue. Therefore, the COCAT has maintained the standard and focus of the journal. It is expected that the publications in COCAT would assist authors to diversify their research areas. We request authors to submit their valuable manuscripts for publication in COCAT. Your papers would undergo an unbiased peerreview and editorial process. I sincerely appreciate all authors, reviewers and journal staff for maintaining a high standard of Current Organocatalysis.

It gives me a great pleasure to write an overview of all papers published in Current Organocatalysis (COCAT) in 2018, volume 5 (3). There is no doubt that COCAT has established as a crucial journal in this area because organocatalytic reactions are powerful methods in the construction of simple to complex molecular structures. In this issue, the following papers are published. Brahmachari et al. have investigated camphor-10-sulfonic acid as a promising organocatalyst in conducting diverse reactions. The methods are simple, economical and effective. Biswas and Basu have described the use of Bunte salts in organic synthesis. Yadav and Banik have developed an efficient camphor-10-sulfonic acid-catalysed protection method of carbonyl groups. Banik et al. have investigated an environmentally benign synthetic method to access novel synthesis of substituted indoles through Michael reaction using camphor-10-sulfonic acid as the catalyst. Farooq and Ngaini have described various synthetic routes for the preparation of methyl-2-formyl benzoate and its importance as a precursor for the preparation of compounds with pharmaceutical applications. Shahraki et al. have investigated the kinetics and a mechanistic elucidation of triphenylarsine as a catalyst in a one-pot reaction for the formation of dialkyl-2(2-oxobenzo [d] oxazol-3(2H)-yl) fumarate. Kumar et al. have studied Ionic Liquid [PyN(CH2)4SO3H][CH3PhSO3]-mediated and promoted ecofriendly one-pot domino synthesis of benzothiazolopyrano/chromenopyrimidine derivatives. Singh et al. have investigated sarcosine as a new and recyclable catalyst for the synthesis of multi-substituted pyrazole derivatives. Siddiqui et al. have studied malic acid as a sustainable organocatalyst for the one-pot and multi-component synthesis of benzopyrimido[4,5-b]quinoline in biodegradable glycerol. It is good to note that Current Organocatalysis has expanded its scope significantly. We believe that the publications in COCAT would help many authors to expend their research areas. The management of COCAT would consider valuable manuscripts for publication through a rigorous peer-review and editorial process. I thank all authors, reviewers and journal staff for maintaining a high standard of Current Organocatalysis.