Results 21 to 30 of about 23,580 (267)
iScience, 2021 Summary: Nitrile (C≡N bond) activation for direct organic synthesis has been less explored so far due to a high redox potential of nitrile and its low dissociation energy of C−CN bond.
Jiarui Zhang +4 more
doaj +1 more source
, 2020 Herein, new palladium(II) complexes with Schiff bases derived from salicylaldehyde and N,N-dialkyl-p-phenylenediamines were obtained. The ligands 2-((4-(N,N-dimethylamino)aniline)formimidoyl)phenol (N,N-metph-sOH - L1) and 2-((4-(N,N-diethylamino)aniline)
L. E. Sarto +8 more
semanticscholar +1 more source
A facile synthesis of phenazine and quinoxaline derivatives using magnesium sulfate heptahydrate as a catalyst [PDF]
Journal of the Serbian Chemical Society, 2011 Convenient and simple procedures for the synthesis of phenazine and quinoxaline derivatives were developed via a reaction of o-phenylenediamines and 1,2-dicarbonyl compounds.
BAHADOR KARAMI, SAEED KHODABAKHSHI
doaj
Journal of Chemistry, 2013 The present paper introduces a simple and efficient method for the synthesis of substituted benzimidazoles by heterocyclization of different o-phenylenediamines and substituted aromatic carboxylic acid/aldehyde in the presence of zirconyl nitrate as ...
Pratapsinha B. Gorepatil +2 more
doaj +1 more source
Simple, mild, and highly efficient synthesis of 2-substituted benzimidazoles and bis-benzimidazoles
Química Nova, 2014 A new convenient method for preparation of 2-substituted benzimidazoles and bis-benzimidazoles is presented. In this method, o-phenylenediamines were condensed with bisulfite adducts of various aldehydes and di-aldehydes under neat conditions by ...
Bilge Eren, Yunus Bekdemir
doaj +1 more source
Recent advances in photocatalytic hydrogen peroxide production
PhotoMat, EarlyView., 2023 We classify the representative photocatalytic materials for photosynthesis of hydrogen peroxide (H2O2) in recent years and discuss the related modification methods in detail, providing inspiration and insights for the future design of photocatalysts for H2O2 production.
Jinyu Yan +4 more
wiley +1 more source
A Fast and Efficient Method for the Synthesis of 1,5-Benzodiazepine Derivatives Under Solvent-Free Conditions [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2007 Silica sulfuric acid is found to catalyze efficiently the condensation of o-phenylenediamines with various linear and cyclic ketones to afford the corresponding 1,5-benzodiazepines in quantitative yields under solvent-free conditions at room ...
Ahmad Shaabani, Ali Maleki
doaj
Electrochemical amination of para-chloroaniline
Учёные записки Казанского университета: Серия Естественные науки, 2019 The process of cation-radical amination of para-chloroaniline using hydroxylamine and the Ti(IV)/Ti(III) mediator system was studied in aqueous solutions of 9–17 M H2SO4.
Yu.A. Lisitsyn
doaj +1 more source
Journal of Food and Drug Analysis, 2019 Phenylenediamines (PDs), which are reported to cause allergic dermatitis and possess genotoxicity and carcinogenicity, are the ingredients used in permanent hair dyes.
H. Ko +3 more
semanticscholar +1 more source
Illegally additives determination by thin layer chromatography
MATEC Web of Conferences, 2016 To find out a simple TLC method, which could identify m-phenyenediamine and o-phenylenediamine in several colors of oxidation hair coloring products simultaneously. The colors includes black, yellow, brown and red. A small amount of the sample was placed
Liang Xin +3 more
doaj +1 more source