Article
Chemistry, Multidisciplinary
Tomohiro Ichitsuka, Takashi Makino, Takayuki Ishizaka
Summary: This study developed an ecofriendly method for the synthesis of N-arylamides using isopropenyl esters and heterogeneous acid catalysts, which enables the synthesis of various N-arylamides in high yields. The method has a wider substrate scope and allows for the obtainment of high-purity products.
Article
Chemistry, Multidisciplinary
Masatoshi Shibuya, Takayuki Orihashi, Yamei Li, Yoshihiko Yamamoto
Summary: The chemoselective benzylic C(sp(3))-H amination of unprotected arylalkanols catalyzed by N-hydroxyphthalimide has been successfully developed, with the critical role played by 1,1,1,3,3,3-hexafluoropropan-2-ol as a solvent. The conversion of the aminated product to the corresponding free amino alcohol was also demonstrated in this study.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Bo Guo, Sen Zhang, Xing Xu, Baoyu Gao, Qian Li, Qinyan Yue
Summary: The deterioration of water caused by industrial production is a significant problem. This study demonstrates the use of ferric chloride and poly-ferric chloride coupled with polyamidine to enhance coagulation and remove toxic organics. The addition of polyamidine significantly improves the coagulation performance of the iron-based coagulants. The results show that charge neutralization and adsorption-bridging are the main processes for the removal of organics, and the purification performance is enhanced by the higher charge density of polyamidine.
CHINESE CHEMICAL LETTERS
(2023)
Article
Engineering, Chemical
Jingshen Dong, Quanjun Liu, Li Yu, S. H. Subhonqulov
Summary: The study explored the use of Fe3+ and NH4+ in the flotation separation of chalcopyrite and arsenopyrite through various analytical techniques. The combined use of Fe3+ and NH4+ was found to inhibit arsenopyrite and activate chalcopyrite. The addition of NH4+ enhanced the adsorption of xanthate on the chalcopyrite surface treated with Fe3+, leading to the formation of cuprous xanthate and dixanthogen.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Vipin K. Pandey, Sangita Sahoo, Arnab Rit
Summary: AgSbF6 has been established as an effective catalyst for the hydroboration of diverse isocyanates, yielding selective N-boryl formamides or N-boryl methylamines under different conditions. Additionally, this catalyst system selectively hydroborates various N-heterocycles, with pyridine derivatives preferentially undergoing 1,4 hydroboration and quinolines observed to undergo complete heterocycle hydrogenation to form tetrahydroquinoline (after hydrolysis).
CHEMICAL COMMUNICATIONS
(2022)
Article
Energy & Fuels
Ece Polat, Mahmut Altinbas
Summary: Anaerobic Digestate (AD) is a valuable nutrient source for microalgal growth and can be used in the circular economy to produce high-value-added products. Dual-mode cultivation with AD as a substrate is an effective strategy to increase algal biomass and biodiesel quality. By optimizing the dilution ratio of AD and subjecting the microalgae to stress conditions using NaCl and FeCl3, high lipid content and compliance with biodiesel standards were achieved.
Article
Chemistry, Applied
Xiaoyang Li, Yufei Cao, Jiarong Xiong, Jun Li, Hai Xiao, Xinyang Li, Qingqiang Gou, Jun Ge
Summary: Combining enzymatic and single-metal-atom catalysis shows promise for green chemical synthesis. This study presents a one-pot chemoenzymatic cascade reaction for the asymmetric synthesis of (R)-1-(4-biphenyl) ethanol, using a highly active and selective enzyme-metal-single-atom hybrid as the catalyst. The Pd single atoms anchored lipase (Pd1/CALB-P) efficiently drives cascade reactions in aqueous solution, achieving facile synthesis of chiral biaryl alcohols.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Energy & Fuels
Sinang Choi, Sang-Sup Lee
Summary: Activated carbon injection upstream of a particulate matter control device is commonly used to control mercury in coal-fired flue gas. Nitrogen oxides and hydrogen chloride can enhance the efficiency of activated carbon for mercury removal. Among different chloride compounds impregnated on activated carbon, copper chloride impregnated activated carbon showed the highest mercury adsorption efficiency under specific conditions.
Article
Chemistry, Analytical
Jee Kwan Ng, Feng Huai Tay, Patrick Steven Wray, Siti Syazana Mohd Saberi, Kenny Kai Ken Ting, Sook Mei Khor, Ka Lung Andrew Chan
Summary: This study utilized a portable spectrometer to rapidly test alcohol-based hand rub, showing comparable performance with benchtop FT-IR spectrometer and HS-GC-MS. Field-testing in Malaysia revealed that only 75.2% of Group A samples met the criteria for safe and effective hand rub, while less than 50% of Group B did.
ANALYTICAL CHEMISTRY
(2021)
Review
Chemistry, Applied
Sereena Sunny, Ramasamy Karvembu
Summary: C-N bond formation reactions have gained significant interest recently due to the prevalence of nitrogen-containing compounds in pharmaceuticals. The use of directing-group-assisted C-H amidation with cobalt as a catalyst has been a focus for its unique properties and efficiency in selective amidation of C-H bonds. The evolution of directing group preferences and their function in site selection have been discussed in recent developments of this field.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Organic
Ni Xiong, Yuanqi Dong, Bin Xu, Yang Li, Rong Zeng
Summary: This study describes a mild protocol for amide formation using nitroarenes as nitrogen sources and an inexpensive iron complex as a catalyst. The method utilizes pH-neutral conditions and avoids the use of strong oxidants or reductants, allowing for tolerance of a wide range of aldehydes and nitroarenes with various functional groups.
Article
Environmental Sciences
Juan Li, Martha Dagnew, Madhumita B. Ray
Summary: This study investigates the effect of coagulation on microfibers from laundry processes and finds that the addition of polyaluminum chloride (PACl) can increase the removal efficiency. The study also observes surface changes of the microfibers during coagulation and identifies charge neutralization and adsorption-bridging as the dominant mechanisms.
ENVIRONMENTAL RESEARCH
(2022)
Article
Multidisciplinary Sciences
Sepand K. Nistanaki, Chloe G. Williams, Benjamin Wigman, Jonathan J. Wong, Brittany C. Haas, Stasik Popov, Jacob Werth, Matthew S. Sigman, K. N. Houk, Hosea M. Nelson
Summary: This study reports the discovery of a highly enantioselective vinyl carbocation carbon-hydrogen (C-H) insertion reaction enabled by imidodiphosphorimidate organocatalysts. The active site confinement in this catalyst class not only allows effective enantiocontrol but also expands the scope of vinyl cation C-H insertion chemistry, enhancing the utility of this transition metal-free C(sp3)-H functionalization platform.
Article
Chemistry, Multidisciplinary
Oscar M. F. Lama, Diego A. Roa, Alma Arevalo, Juventino J. Garcia
Summary: The hydrodeoxygenation (HDO) of different fatty acids (FAs) was successfully achieved using commercially available nickel(II) compounds as catalysts and silanes as reducing agents under mild reaction conditions. By fine-tuning the reaction conditions and using relatively mild conditions without additives, high conversions (83% to >=99%) and good selectivity were obtained for the carboxylic group reduction of fatty acids, yielding aldehydes, alcohols, and hydrocarbons. The reaction mechanism was investigated using a synthesized and characterized reaction intermediate [Ni(C15H31COO)(2)(H2O)(2)], which demonstrated as an active catalyst.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Bo Xu, Wan-Yuan Shi, Wan Sun, Liang-Ming Pan, Yu-Quan Dong
Summary: The synergy effect of CuCl2 and FeCl3 impregnated into fly ash on mercury removal was investigated, with Cu2+ contributing more than Fe3+. The highest mercury removal efficiency was achieved with a mass ratio of 3:1 between CuCl2 and FeCl3 at temperatures between 140 degrees C and 160 degrees C. Density functional theory calculations showed that the coexistence of Cu and Fe accelerates the charge transfer of Hg0, reducing the energy barrier during removal.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Anon Bunrit, Christian Dahlstrand, Sandra K. Olsson, Pemikar Srifa, Genping Huang, Andreas Orthaber, Per J. R. Sjoberg, Srijit Biswas, Fahmi Himo, Joseph S. M. Samec
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Article
Chemistry, Organic
Anon Bunrit, Christian Dahlstrand, Pemikar Srifa, Sandra K. Olsson, Genping Huang, Srijit Biswas, Fahmi Himo, Joseph S. M. Samec
Article
Chemistry, Organic
Abhishek Kumar Mishra, Srijit Biswas
JOURNAL OF ORGANIC CHEMISTRY
(2016)
Article
Chemistry, Organic
Abhishek Kumar Mishra, Ajay Verma, Srijit Biswas
JOURNAL OF ORGANIC CHEMISTRY
(2017)
Article
Chemistry, Applied
Abhishek Kumar Mishra, Nelson Henrique Morgon, Suparna Sanyal, Aguinaldo Robinson de Souza, Srijit Biswas
ADVANCED SYNTHESIS & CATALYSIS
(2018)
Article
Chemistry, Multidisciplinary
Srijit Biswas, Rahul A. Watile, Joseph S. M. Samec
CHEMISTRY-A EUROPEAN JOURNAL
(2014)
Article
Chemistry, Multidisciplinary
Srijit Biswas, Joseph S. M. Samec
CHEMISTRY-AN ASIAN JOURNAL
(2013)
Article
Chemistry, Multidisciplinary
Rahul A. Watile, Srijit Biswas, Joseph S. M. Samec
Article
Chemistry, Organic
Alban Cadu, Rahul A. Watile, Srijit Biswas, Andreas Orthaber, Per J. R. Sjoberg, Joseph S. M. Samec
Article
Chemistry, Organic
Soumen Sarkar, Krishnendu Bera, Sukhendu Maiti, Srijit Biswas, Umasish Jana
SYNTHETIC COMMUNICATIONS
(2013)
Article
Multidisciplinary Sciences
Rahul A. Watile, Anon Bunrit, Jessica Margalef, Sunisa Akkarasamiyo, Rabia Ayub, Emi Lagerspets, Srijit Biswas, Timo Repo, Joseph S. M. Samec
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Anon Bunrit, Pemikar Srifa, Thanya Rukkijakan, Christian Dahlstrand, Genping Huang, Srijit Biswas, Rahul A. Watile, Joseph S. M. Samec
Meeting Abstract
Chemistry, Multidisciplinary
Anon Bunrit, Rahul Watile, Christian Dahlstrand, Sandra Olsson, Pemikar Srifa, Genping Huang, Srijit Biswas, Fahmi Himo, Joseph Samec
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Meeting Abstract
Chemistry, Multidisciplinary
Anon Bunrit, Christian Dahlstrand, Sandra Olsson, Pemikar Srifa, Genping Huang, Per Sjoberg, Srijit Biswas, Fahmi Himo, Joseph Samec
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Meeting Abstract
Chemistry, Multidisciplinary
Srijit Biswas, Joseph S. M. Samec
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Article
Chemistry, Organic
Geeta Devi Yadav, Pooja Chaudhary, Balaram Pani, Surendra Singh
Summary: Chiral transition metal complexes with privileged ligands are efficient catalysts for various asymmetric organic transformations. Transition metal complexes of C1-symmetric pyrrolidine-based ligands have been widely used in asymmetric organic reactions. However, a comprehensive review article on the transition metal complexes of chiral C1-symmetric pyrrolidine-based ligands derived from (L)-proline has not been published.
TETRAHEDRON LETTERS
(2024)
