The homoleptic hydroxy-pyridine functionalized Co(III)-NHC complex (2) demonstrates extraordinary catalytic activity towards the CO cycloaddition under mild conditions. Using this catalyst and TBAB, the highest TON (666 667) and TOF (52 713 h) were achieved compared to previously reported cobalt catalysts.
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http://dx.doi.org/10.1039/d4dt02767a | DOI Listing |
Dalton Trans
October 2024
Department of Chemistry, Indian Institute of Technology Kanpur (IITK), Kanpur-208016, Uttar Pradesh, India.
The homoleptic hydroxy-pyridine functionalized Co(III)-NHC complex (2) demonstrates extraordinary catalytic activity towards the CO cycloaddition under mild conditions. Using this catalyst and TBAB, the highest TON (666 667) and TOF (52 713 h) were achieved compared to previously reported cobalt catalysts.
View Article and Find Full Text PDFChemistry
August 2024
Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India.
P-chiral supramolecular phosphine ligands are crucial for asymmetric transformations, but their synthesis is tedious. We report a one-step synthesis of thermally stable P-chiral supramolecular phosphines and their performance in the asymmetric hydrogenation of functionalized alkenes. A rational designing and synthesis of (R, R)-QuinoxP* ligated palladium complex (Pd-2) in excellent yield is reported.
View Article and Find Full Text PDFJ Hazard Mater
January 2024
Environmental Biotechnology & Genomics Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur 4400 20, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India. Electronic address:
Chlorpyrifos (CP) is an extensively used organophosphate (OP) pesticide that inhibits the biogeochemical cycle with subsequent loss of soil fertility. In this view, indigenous soil bacteria with significant CP degradation capacity were identified as Pseudomonas aeruginosa RNC3 and Stenotrophomonas maltophilia RNC7 through 16 S rRNA. The optimum values of independent variables for CP degradation were found to be 30 ℃, pH 7, 100 mgL of CP, and 1 OD cell culture RNC3 and RNC7 showed 82.
View Article and Find Full Text PDFJ Assist Reprod Genet
July 2023
Department of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Jalal-Ale-Ahmad Street, P.O.Box:14115-111, Tehran, Iran.
Purpose: Despite the significant advances in the in vitro development of human primordial follicles, it is still a challenging approach with great potential for improvements. Therefore, the present study aimed to investigate the effect of a feeder layer of human theca progenitor cells (hTPCs) on the development of primordial follicles embedded in human ovarian tissue.
Methods: Fragments of frozen-thawed ovarian tissue were activated using the vanadate-derivative dipotassium bisperoxo (5-hydroxy-pyridine-2-carboxylic) oxovanadate (V) and kit ligand for 24 h.
Nat Commun
February 2021
State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
Biodegradation of aromatic and heterocyclic compounds requires an oxidative ring cleavage enzymatic step. Extensive biochemical research has yielded mechanistic insights about catabolism of aromatic substrates; yet much less is known about the reaction mechanisms underlying the cleavage of heterocyclic compounds such as pyridine-ring-containing ones like 2,5-hydroxy-pyridine (DHP). 2,5-Dihydroxypyridine dioxygenase (NicX) from Pseudomonas putida KT2440 uses a mononuclear nonheme Fe(II) to catalyze the oxidative pyridine ring cleavage reaction by transforming DHP into N-formylmaleamic acid (NFM).
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