Results 71 to 80 of about 27,226 (298)

Orientation Effect of Side Chain Substituents in Aromatic Substitution. Induced Ortho Nitration

, 1995
The presence of a free carboxyl or ester function on the alpha-carbon of toluene induces the nitration of the phenyl ring in the ortho position at or above the statistical value (chaperon effect), when pure HNO3 is used in CH2Cl2 solution.
Giumanini A. G., Gorassini F, VERARDO, Giancarlo, STRAZZOLINI, Paolo   +3 more
core   +1 more source

In Situ Formation of a Highly Selective Nickel Single Atom Catalyst for Electrochemical CO2 Reduction to CO

Advanced Materials, EarlyView.
Development of a novel method for synthesizing Ni single atom catalysts for highly selective electrochemical CO2 reduction in situ. This catalyst achieves 100% selectivity for CO and is formed in an industrially relevant cell architecture. Using post‐mortem XRD, STEM, and EDS and operando XAS, the identity of the active site and the mechanism behind ...
Ian Street, Venkata Sai Sriram Mosali, Noah Sandberg, Fengyuan Shi, Deborah Myers, William E. Mustain   +5 more
wiley   +1 more source

Identification and quantification of sites of nitration and oxidation in the key matrix protein laminin and the structural consequences of these modifications

Redox Biology, 2019
Laminin is a major protein of the basement membrane (BM), a specialized extracellular matrix (ECM) of the artery wall. The potent oxidizing and nitrating agent peroxynitrous acid (ONOOH) is formed at sites of inflammation, and data implicate ONOOH in ECM
Lasse G. Lorentzen, Christine Y. Chuang, Adelina Rogowska-Wrzesinska, Michael J. Davies   +3 more
doaj   +1 more source

Nitration of the methoxynaphthalenes

, 1965
The isomer distributions and the rates relative to naphthalene have been determined using gas chromatography for the nitration of 1- and 2-methoxynaphthalenes.
Alcorn P.G.E., PR Wells, PGE Alcorn, Wells P.R.   +3 more
core   +1 more source

Pulsed Oxidative–Reductive Electrolysis Over Dual Cu and Co Single‐Atom Sites for Urea Electrosynthesis

Advanced Materials, EarlyView.
Alternating oxidative–reductive pulses synchronize CO2‐derived *CO and NH3‐derived *NHx intermediates over dual Cu and Co single‐atom sites, enabling urea and ethyl urea formation with a total C─N Faradaic efficiency of 42 ± 4%. In situ spectroscopy and theoretical calculations elucidate complementary Cu and Co functions, while oxidative controls ...
Putri Ramadhany, Peiqi Qiu, Thành Trần‐Phú, Denny Gunawan, Bernt Johannessen, Rosalie K. Hocking, Yan Jiao, Rose Amal, Rahman Daiyan   +8 more
wiley   +1 more source

The nitration of pentamethylphenol

, 1984
Nitration of pentamethylphenol (1) with nitrogen dioxide in benzene gives the four possible 2,5,6-trinitrocyclohex-3-enones (6), (7), (8) and (9), three 4,5,6-trinitrocyclohex-2-enones (10), (11) and [(12) or (13)], the 2-hydroxy-5,6-dinitrocyclohex-3 ...
JM White, WT Robinson, MP Hartshorn, AR Whyte, J Vaughan   +4 more
core   +1 more source

Nitration reactions of conjugated compounds employing lithium nitrate / TFAA [PDF]

, 2019
Tandem nitration / Ritter reaction of three conjugated dienes using trifluoroacetyl nitrate in acetonitrile led predominantly to 1,4-addition products and concomitant N-nitration.
Paparoidamis, Nicholas, Wade, Peter, Miller, Christopher Jared, Costa, Stephanie Anne   +3 more
core   +1 more source

Dual Single Atoms Boosting Photocatalytic Upcycling of Raw Polyvinylidene Fluoride Plastic

Advanced Materials, EarlyView.
To resolve the catastrophic disaster of plastic contamination, the Cu‐Fe dual‐single‐atom‐loaded In2P3S9 NSs photocatalyst was prepared for direct conversion of raw polyvinylidene fluoride plastic into valuable chemicals. The dual‐single‐atom catalyst exhibits exceptional performance, with a total acetic/formic acid production of ∼1351.8 µmol g−1 ...
Amin Talebian‐Kiakalaieh, Shiying Ren, Wenzhong Ji, Yun Liu, Bingquan Xia, Jingrun Ran, Shi‐Zhang Qiao   +6 more
wiley   +1 more source

Adaptive Supramolecular Interactions Govern Redox‐Active Molecules in Aqueous Redox Flow Batteries

Advanced Materials, EarlyView.
Adaptive supramolecular interactions overcome the solubility‐stability trade‐off in aqueous redox flow batteries. Hydrophobic anions disrupt intrinsic π–π stacking to enable high solubility, while redox‐state‐dependent spin pairing and cation coordination dynamically stabilize reactive intermediates during operation.
Vikram Singh, Seongyeon Kwon, Giu A. Silva Testa, Ariyeong Yun, Yohan Kim, Yunseop Choi, Dongwook Kim, Seongmo Ahn, Minyoung Shim, Jongcheol Seo, Evan Wenbo Zhao, Mu−Hyun Baik, Hye Ryung Byon   +12 more
wiley   +1 more source

Synthesis and Properties of NitroHPHAC: The First Example of Substitution Reaction on HPHAC

Molecules, 2020
Hexapyrrolohexaazacoronene (HPHAC) is one of the N-containing polycyclic aromatic hydrocarbons in which six pyrroles are fused circularly around a benzene.
Yoshiki Sasaki, Masayoshi Takase, Shigeki Mori, Hidemitsu Uno   +3 more
doaj   +1 more source