Results 41 to 50 of about 4,540 (185)

Oxidative Generation and Reactivity of the Cyclopropyl Radical From a Martin Silicate

Chemistry – A European Journal, EarlyView.
A photoredox strategy employing Martin silicates enables the oxidative generation and controlled capture of cyclopropyl radicals, including the naked one, long considered challenging intermediates. The method affords functionalized cyclopropanes through both Giese‐type additions and dual nickel/photoredox C(sp3)−C(sp2) cross‐couplings.
Amal Lakhal, Alexandre Millanvois, Louis Fensterbank, Cyril Ollivier   +3 more
wiley   +1 more source

Extracellularly Activatable Conjugates of RGD Peptidomimetics and Cryptophycin for αVβ3‐Targeted Cancer Therapy

Chemistry – A European Journal, EarlyView.
Integrin αVβ3‐targeting small‐molecule drug conjugates (SMDCs) were synthesized by conjugating a cryptophycin payload through a neutrophil elastase‐cleavable NPV‐PABC linker. RGD peptidomimetic and linker epimers served as controls for targeting and enzymatic cleavage, and the resulting conjugates displayed subnanomolar cytotoxicity in vitro.
Dominic Seißenschmidt, Henriette Hartung, Jonah Kammer, Norbert Sewald   +3 more
wiley   +1 more source

Simultaneous Degradation, Dehalogenation, and Detoxification of Halogenated Antibiotics by Carbon Dioxide Radical Anions

Engineering
Despite the extensive application of advanced oxidation processes (AOPs) in water treatment, the efficiency of AOPs in eliminating various emerging contaminants such as halogenated antibiotics is constrained by a number of factors.
Yanzhou Ding, Xia Yu, Shuguang Lyu, Huajun Zhen, Wentao Zhao, Cheng Peng, Jiaxi Wang, Yiwen Zhu, Chengfei Zhu, Lei Zhou, Qian Sui   +10 more
doaj   +1 more source

Enabling Cross‐Coupling Reactivity of α‐Pentafluorosulfanyl Compounds with a Thermally Stable Organozinc α‐SF5 Reagent

Chemistry – A European Journal, EarlyView.
This work describes the first example of a thermally stable α‐SF5 organometallic reagent, which allows for extensive downstream functionalization by allylation and acylation reactions under copper catalysis, as well as palladium‐catalyzed Negishi‐type cross‐coupling conditions up to 96% yield. In silico analysis shines initial light on the requirements
Lujie Xu, David Rombach
wiley   +1 more source

The BhbA Enzyme Assay

Bio-Protocol, 2014
Reductive dehalogenation has been found primarily in anaerobic communities and is originally thought to rarely occur in aerobes. A reductive dehalogenase (BhbA) was characterized from an aerobic strain of Comamonas sp.
Kai Chen, Jiandong Jiang
doaj   +1 more source

Z‐Scheme BiOCl‐Based Photocatalysts: Recent Advances in Designing, Structural Engineering, Formation Mechanisms, and High Performance Photocatalytic Environmental Remediation

EcoEnergy, EarlyView.
This review deals with the recent advancements in design and engineering of BiOCl‐based Z‐scheme photocatalysts with emphasis on tailoring of structural, optoelectronic properties and heterojunction assembly for environmental applications including photodegradation of industrial organic waste, pharmaceuticals, pesticides, herbicides, toxic heavy metals,
Sakshi Sharma, Neha Kaushal, Victor Ezebuiro, Monika Sindhu, Lovepreet Singh, Yugesh Singh Thakur, Hendrik C. Swart, Jai Prakash   +7 more
wiley   +1 more source

Reductive dehalogenation as a respiratory process [PDF]

Antonie van Leeuwenhoek, 1994
Anaerobic bacteria can reductively dehalogenate aliphatic and aromatic halogenated compounds in a respiratory process. Only a few of these bacteria have been isolated in pure cultures. However, long acclimation periods, substrate specificity, high dehalogenation rates, and the possibility to enrich for the dehalogenation activity by subcultivation in ...
C, Holliger, W, Schumacher
openaire   +2 more sources

Building Blocks for Acetylenic Scaffolding Inspired by 6,6,12‐Graphyne

European Journal of Organic Chemistry, EarlyView.
6,6,12‐Graphyne is an elusive allotrope of carbon. Here, we present the synthesis and properties of a selection of useful molecular building blocks to advance the preparation of various segments of 6,6,12‐graphyne. These modules are derived from tri‐ and tetraethynylethene derivatives, di‐ and tetraethynyl‐substituted tolane derivatives, as well as ...
Florim Seljmani, Marie Erskov Krogh, Peter Lundgård Krøll, Mogens Brøndsted Nielsen   +3 more
wiley   +1 more source

Learning from B12 enzymes: biomimetic and bioinspired catalysts for eco-friendly organic synthesis

Beilstein Journal of Organic Chemistry, 2018
Cobalamins (B12) play various important roles in vivo. Most B12-dependent enzymes are divided into three main subfamilies: adenosylcobalamin-dependent isomerases, methylcobalamin-dependent methyltransferases, and dehalogenases. Mimicking these B12 enzyme
Keishiro Tahara, Ling Pan, Toshikazu Ono, Yoshio Hisaeda   +3 more
doaj   +1 more source

Viruses in the sediments around the trenches harbor diverse survival mechanisms

iMetaOmics, EarlyView.
Deep‐sea trenches are the deepest and most isolated environments in the global ocean but the diversity and adaptation of the viral communities remain poorly characterized. In this study, 5563 viral operational taxonomic units (vOTUs) were identified from sediments of the Yap Trench and Western Caroline Basin.
Yue Su, Hao Yu, Shujuan Sun, Kaiyang Zheng, Ziyue Wang, Chen Gao, Guangxue Li, Xiaoshou Liu, Hongbing Shao, David Paez‐Espino, Andrew McMinn, Yantao Liang, Min Wang   +12 more
wiley   +1 more source