Results 51 to 60 of about 220,193 (199)

Substituent effects and solvents

, 1992
The source data matrix containing 428 data series describing substituent effects from meta and para position (25 substituents from both position) in water, protic and aprotic solvents was investigated by using conjugated deviation analysis and principal ...
O Pytela, M Ludwig
core   +1 more source

Insights into impact of polar protic and aprotic solvents on bioactive features of 3-(Dimethylaminomethyl)-5-nitroindole: A DFT study and molecular dynamics simulations.

PLoS ONE
Polar protic and aprotic solvents can effectively simulate the maturation of breast carcinoma cells. Herein, the influence of polar protic solvents (water and ethanol) and aprotic solvents (acetone and DMSO) on the properties of 3-(dimethylaminomethyl)-5-
Stève-Jonathan Koyambo-Konzapa, Berthelot S D Ramlina Vamhindi, Bekzod Khudaykulov, Peter A Sidhom, Shahzeb Khan, Ashraf M M Abdelbacki, Alaa H M Abdelrahman, Mahmoud A A Ibrahim   +7 more
doaj   +1 more source

Asymmetric Donor–Acceptor 2,7-Disubstituted Fluorenes and Their 9-Diazoderivatives: Synthesis, Optical Spectra and Photolysis

Molecules
In a search for dyes photoactivatable with visible light, fluorenes with substituents at positions 2 and 7 were prepared, and their absorption and emission spectra were studied.
Andrei I. Savchenko, Vladimir N. Belov, Mariano L. Bossi, Stefan W. Hell   +3 more
doaj   +1 more source

Decoupling Electron and Proton Transfer in Noncontact Catalytic Hydrogenation of Nitroaromatics

Advanced Science
Understanding the elementary reactions of active hydrogen species and electron transfer mechanisms during catalytic hydrogenation remains a fundamental challenge.
Zhongyin Liang, Qingyuan Wu, Zhe Yang, Nanfeng Zheng   +3 more
doaj   +1 more source

Electrical Conductivity of Films Formed by Few-Layer Graphene Structures Obtained by Plasma-Assisted Electrochemical Exfoliation of Graphite

International Journal of Electrochemistry, 2019
Current-voltage characteristics of few-layer graphene structures (FLGS) obtained by plasma-assisted electrochemical exfoliation of graphite in Na2SO4 solution were measured.
Vladimir P. Vasiliev, Roman A. Manzhos, Alexander G. Krivenko   +2 more
doaj   +1 more source

Solvent-free transformation of protic ionic liquids into zwitterions

Chemical Communications
Protic ionic liquids containing a vinyl-sulfonylamide anion catalytically transformed into zwitterions upon addition of a base under solvent-free conditions.
Yosuke Nakazono, Ryota Inoue, Ryo Sumitani, Tomoyuki Mochida   +3 more
openaire   +2 more sources

Ionic equilibria in protic and in dipolar aprotic solvents [PDF]

Pure and Applied Chemistry, 1971
Abstract
openaire   +1 more source

Factors Affecting the Catalytic Epoxidation of Olefins by Iron Porphyrin Complexes and H₂O₂ in Protic Solvents

, 2016
The catalytic epoxidation of cyclohexene by iron(III) porphyrin complexes and H2O2 has been investigated in alcohol solvents to understand factors affecting the catalyst activity in protic solvents.
So-Young Oh (2961999), Ying Ji Sun (3035178), Jinheung Kim (1720567), Won-Ki Kim (820362), Woonsup Shin (2177414), Wonwoo Nam (1289187), Seung K. Woo (3035181)   +6 more
core   +1 more source

Nitro-Grela-type complexes containing iodides – robust and selective catalysts for olefin metathesis under challenging conditions

Beilstein Journal of Organic Chemistry, 2015
Iodide-containing nitro-Grela-type catalysts have been synthesized and applied to ring closing metathesis (RCM) and cross metathesis (CM) reactions. These new catalysts have exhibited improved efficiency in the transformation of sterically, non-demanding
Andrzej Tracz, Mateusz Matczak, Katarzyna Urbaniak, Krzysztof Skowerski   +3 more
doaj   +1 more source

Silver-Mediated Allylic Disulfide Rearrangement for Conjugation of Thiols in Protic Media

, 2016
Alkyl and aryl allyl disulfides are induced to undergo the desulfurative allylic rearrangement by silver nitrate in protic solvents at room temperature, thereby removing the necessity for the use of phosphines as thiophilic reagents.
Venkataraman Subramanian (57663), David Crich (1314684), Maheswaran Karatholuvhu (2330665)   +2 more
core   +1 more source