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TCCA/RSeSeR-Mediated Selenoalkoxy of Allenamides via a Radical Process: Synthesis of Selanyl-allylic N,O-Aminals.
J Org Chem
November 2024
Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, P. R. China.
An efficient TCCA (trichloroisocyanuric acid)/RSeSeR-mediated selenoalkoxy of allenamides for the construction of selanyl-allylic N,OA-aminal derivatives was developed. The reaction exhibits good functional group tolerance and high efficiency, affording the products in good to excellent yields. Mechanistic investigations indicated that a selanyl-allylic radical intermediate was first formed via the RSe radical added to the central carbon of allenamides, which subsequently furnished highly stable selanyl-allylic carbocation intermediate by abstraction of an electron by the chlorine radical.
View Article and Find Full Text PDFTranscriptome profiling reveals ethylene production by reactive oxygen species in trichloroisocyanuric acid-treated rice seeds.
Physiol Plant
September 2024
College of Life Sciences, Zhejiang Normal University, Jinhua, P. R. China.
Reactive oxygen species (ROS) have been extensively suggested to stimulate ethylene production. However, the molecular mechanism by which ROS stimulate ethylene production remains largely unclear. Here, transcriptome profiling was used to verify if ROS could stimulate ethylene production via direct formation of ethylene from ROS.
View Article and Find Full Text PDFInsights into the inhibitory effects of trichloroisocyanuric acid disinfectant on the phototransformation of polypropylene microplastics.
Sci Total Environ
November 2024
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China.
The chemical components in the natural aquatic environment have the potential to be involved in phototransformation of microplastics (MPs). Little information is available regarding the mediation effects of artificially introduced chemicals on MP phototransformation, especially those used in aquaculture water that are vulnerable to human interference. Herein, this study investigated the phototransformation process and mechanism of polypropylene microplastic (PP MPs) in presence of trichloroisocyanuric acid (TCCA) disinfectant with unique properties unlike the conventional inorganic chlorine disinfectants.
View Article and Find Full Text PDFArticle Synopsis
- Lithium-ion portable batteries contain valuable metals like cobalt, nickel, lithium, and others that can be extracted using innovative solvents like choline chloride-based Deep Eutectic Solvents (DESs) and bi-functional ionic liquids (ILs).
- The study tested various DESs in combination with organic acids and additives to optimize metal extraction, finding the most effective method with DES 2 mixed with glycine and hydrogen peroxide.
- Results showed that using DESs provided significantly better extraction efficiency (up to 100% for certain metals) compared to bi-functional ILs, suggesting a more effective approach for recovering metals from battery waste.
[Optimal melanin removal methods for HE staining, immunohistochemistry and molecular detection].
Zhonghua Bing Li Xue Za Zhi
June 2024
Department of Pathology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China.
To seek the optimal melanin-removal method for hematoxylin and eosin (HE) staining, immunohistochemistry and molecular detection. Thirty-eight paraffin tissue samples of malignant melanoma diagnosed at the Fujian Cancer Hospital, Fuzhou, China between January 2018 and March 2022 were collected and used to make a tissue microarray. Melanin in these cases was removed using warm hydrogen peroxide, double oxidation depigmentation, modified potassium permanganate-oxalic acid or trichloroisocyanuric acid, followed by HE staining.
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