Results 21 to 30 of about 12,918 (277)

A New Method to Overcome Carboxyamide Formation During AFEX Pretreatment of Lignocellulosic Biomass

open access: yesFrontiers in Chemistry, 2022
Lignin-carbohydrate complexes (LCCs) in the plant cell wall are responsible for providing resistance against biomass-degrading enzymes produced by microorganisms.
Hui Dong   +6 more
doaj   +1 more source

Reaction Products of Cyanoalkyl Phenyl Ethers and Carboxyalkyl Phenyl Ethers with Formaldehyde

open access: yesThe Journal of the Society of Chemical Industry, Japan, 1970
過塩素酸を触媒とし, 酢酸溶媒を用い置換アルキルフェニルエーテル (C6H5O(CH2)nX, X=CN, COOH : n=1,3,4) とホルムアルデヒドとの反応をおこない, 生成する可溶性樹脂の分子量におよぼすXとnの影響について調べた。その結果を下記に記す。ニトリル基を有する化合物の樹脂構造は主としてメチレン結合とメチレンビスアミド結合, カルボキシル基を有する樹脂は主としてメチレン結合によって連結されているものと推定された。
Akira NINAGAWA   +3 more
openaire   +2 more sources

Structure based design and anti-breast cancer evaluation of some novel 4-anilinoquinazoline derivatives as potential epidermal growth factor receptor inhibitors

open access: yesResearch in Pharmaceutical Sciences, 2018
Quinazoline is one of the most widespread scaffolds amongst natural and synthetic bioactive compounds. Recently the quinazoline derivatives and in particular the 4-anilinoquinazolines have attracted much attention for their anticancer properties due to ...
Zahra Haghighijoo   +5 more
doaj   +1 more source

Bromination effect of polybrominated diphenyl ethers on the graphyne surface on enhanced adsorption characteristics using density functional theory study

open access: yesAIP Advances, 2020
Among various techniques for treating polybrominated diphenyl ethers (PBDEs), adsorption and removal methods using carbon materials are widely applied to remove and decompose organic pollutants with high efficiency.
Taeyoon Kim, Yongju Kwon, Soonchul Kwon
doaj   +1 more source

Thermodynamics and Kinetics of Guest-Induced Switching between “Basket Handle” Porphyrin Isomers

open access: yesMolecules, 2014
The synthesis and switching properties of two “basket handle” porphyrin isomers is described. The cis-oriented meso-phenyl groups of these porphyrins are linked at their ortho-positons via benzocrown-ether-based spacers, which as a result of slow ...
Alexander B. C. Deutman   +6 more
doaj   +1 more source

Effects of five different oil production processes on the variety of flavor substances in peanut oil

open access: yesLiang you shipin ke-ji, 2020
In order to explore the effects of different oil production processes on the variety of flavor substances in peanut oil. In this study, headspace solid phase microextraction and gas chromatography-mass spectrometry (HS-SPME-GC-MS) were used to detect the
DONG Lin-jun, LIU Guo-qin, LI Lin
doaj   +1 more source

Annelated furans. XVIII. The photocyclization of 2-methoxyphenyl phenyl ethers

open access: yes, 1975
Irradiation of the polyfunctional 2-methoxyphenyl phenyl ethers obtained by degradation of lichen depsidones results in the formation of dibenzofurans by ring closure involving elimination of the elements of methanol.
JA Elix, DP Murphy
core   +1 more source

Photoinduced α-C(sp3)–H functionalization of cyclic ethers via synergistic photocatalysis and HAT for efficient C–C bond formation

open access: yesGreen Carbon
The selective transformation of inert C(sp3)–H bonds remains a significant challenge in modern organic synthesis. Herein, we report a photocatalytic strategy for achieving the efficient and selective C–H bond activation under mild conditions.
Ke Liu   +6 more
doaj   +1 more source

Functionalised oximes : emergent precursors for carbon-, nitrogen- and oxygen-centred radicals

open access: yes, 2016
The author thanks EaStCHEM for financial support.Oxime derivatives are easily made, are non-hazardous and have long shelf lives. They contain weak N–O bonds that undergo homolytic scission, on appropriate thermal or photochemical stimulus, to initially ...
John C. Walton   +2 more
core   +1 more source

The oxime portmanteau motif : released heteroradicals undergo incisive EPR interrogation and deliver diverse heterocycles

open access: yes, 2014
OA funded through the RCUK OA block grant.Selective syntheses are now available for compounds of many classes, based on C-centered radicals, exploiting a diverse range of mechanisms.
John C. Walton, Walton, John Christopher
core   +1 more source

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