Results 11 to 20 of about 49,138 (272)

5,5′-(Piperazine-1,4-diyl)bis(4-chloro-3H-1,2-dithiol-3-one)

Molbank, 2022
Conjugates of 3H-1,2-dithiol-3-ones with various biologically active compounds are intensively investigated. Although many derivatives of this class have been described in the literature, the compounds containing two dithiole cycles have been explored ...
Vladimir A. Ogurtsov, Oleg A. Rakitin
doaj   +1 more source

Synthesis and spectroscopic investigation of substituted piperazine-2,5-dione derivatives [PDF]

, 2023
The piperazine-2,5-dione moiety is a useful scaffold for functionalisation to generate bioactive molecules. Synthetic methods for accessing substituted piperazine-2,5-diones involve cyclising dipeptides or building from the already established core ...
Craig D., Stuart, Nicholas G., White, Russell A., Barrow, Tristan A., Reekie   +3 more
core   +3 more sources

Piperazine-Linked Covalent Organic Frameworks with High Electrical Conductivity

, 2022
A new kind of piperazine-linked covalent organic framework (COF) was synthesized through the nucleophilic substitution reaction between octaminophthalocyanines and hexadecafluorophthalocyanines.
Yan Yue, Yan Yue (131246), Hongzheng Chen (1649647), Hanying Li (1591387), Hanying Li, Ning Huang, Hongzheng Chen, Ning Huang (623370)   +7 more
core   +1 more source

Oxidation of some Alicyclic Amines by Potassium Hexacyanoferrate (III) in Alkaline Medium: A Kinetic and Mechanistic Study [PDF]

مجلة جامعة النجاح للأبحاث العلوم الطبيعية, 2001
Oxidation of some alicyclic amines (morpholine, piperazine and piperidine) by potassium hexacyanoferrate(???) in basic medium has been investigated at 35°C.
M. M. Al-Subu, A. A. Amer, W. J. Jondi, M. Hanoun, M. J. Mus   +4 more
doaj   +1 more source

Kinetics of absorption of carbon dioxide in aqueous piperazine solutions [PDF]

, 2006
In the present work the absorption of carbon dioxide into aqueous piperazine (PZ) solutions has been studied in a stirred cell, at low to moderate temperatures, piperazine concentrations ranging from 0.6 to 1.5 kmol m- 3, and carbon dioxide pressures up ...
Versteeg, G. F.,, Versteeg, G.F., van Aken, C., Kleingeld, T., Hogendoorn, J.A., Kleingeld, T.,, Hogendoorn, J. A., Versteeg, G. F., van Aken, C.,, Derks, P. W. J., Derks, P. W. J.,, Derks, P.W.J., Hogendoorn, J. A.,   +12 more
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Electrochemical Oxidation Products of Piperazine as Corrosion Inhibitor for HP13Cr Steel in 20% HCl Solution

International Journal of Electrochemical Science, 2019
Three products are synthesized by adjusting current density and quantity of ionic liquid [Bmim][PF6] in electrochemical oxidation of piperazine. The molecular structures of N-methoxyl piperazine, N- carbonyl piperazine and N, N’-dicarbonyl piperazine are
Jun Zhao, Juantao Zhang, Junfeng Xie, Hualong Yang, Wenwen Song, Youwei Li, Mifeng Zhao, Xiaoping Yang   +7 more
doaj   +1 more source

Development of a targeted GC/MS screening method and validation of an HPLC/DAD quantification method for piperazines–amphetamines mixtures in seized material

Egyptian Journal of Forensic Sciences, 2014
Piperazine-related drugs are sold as party pills in the form of tablets, capsules, liquids or powders. These party pills can contain several piperazine derivatives, or even a mixture of piperazines and amphetamine derivatives.
Yacine Boumrah, Martine Rosset, Yannick Lecompte, Sabrina Bouanani, Kamel Khimeche, Abdellah Dahmani   +5 more
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Crystal structure and Hirshfeld surface analysis of the hydrochloride salt of 8-{4-[(6-phenylpyridin-3-yl)methyl]piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one

Acta Crystallographica Section E: Crystallographic Communications, 2021
The amine 8-{4-[(6-phenylpyridin-3-yl)methyl]piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one was crystallized as the hydrochloride salt, 4-(2-oxo-1,2,3,4-tetrahydroquinolin-8-yl)-1-[(6-phenylpyridin-3-yl)methyl]piperazin-1-ium chloride, C25H27N4+·Cl− (I ...
Nisar Ullah, Helen Stoeckli-Evans
doaj   +1 more source

Piperazine-Based Mitochondria-Immobilized pH Fluorescent Probe for Imaging Endogenous ONOO^– and Real-Time Tracking of Mitophagy

, 2022
ONOO– is mainly produced in mitochondria, and dysfunctional and damaged mitochondria are degraded in lysosomes through autophagy, so it is important to synthesize a single probe for dual detection of ONOO– and mitophagy.
Shengmei Song (7345691), Yue Huang (285485), Chuan Dong (1413937), Minglu Li (6467321), Shaomin Shuang (1413946)   +4 more
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Syntheses and crystal structures of 4-(4-nitrophenyl)piperazin-1-ium benzoate monohydrate and 4-(4-nitrophenyl)piperazin-1-ium 2-carboxy-4,6-dinitrophenolate

Acta Crystallographica Section E: Crystallographic Communications, 2022
Crystal structures are reported for two molecular salts containing the 4-(4-nitrophenyl)piperazin-1-ium cation. Co-crystallization from methanol/ethyl acetate solution of N-(4-nitrophenyl)piperazine with benzoic acid gives the benzoate salt, which ...
Holehundi J. Shankara Prasad, Devaraju, Vinaya, Hemmige S. Yathirajan, Sean R. Parkin, Christopher Glidewell   +5 more
doaj   +1 more source