Results 91 to 100 of about 17,074 (296)
Beilstein Journal of Organic Chemistry, 2020 N-(Hetero)aryl-4,5-unsubstituted pyrroles were synthesized from (hetero)arylamines, 1,3-dicarbonyl compounds, and α-bromoacetaldehyde acetal by using aluminum(III) chloride as a Lewis acid catalyst through [1 + 2 + 2] annulation.
Wenbo Huang +5 more
doaj +1 more source
Copper-Catalyzed Cycloisomerization of Cyclopropenylimine for Synthesis of Pyrroles
, 2019 Copper-catalyzed cycloisomerization of 3-iminocyclopropenes for synthesis of pyrroles has been developed. The reaction allows regioselective construction of pyrroles with various substitution patterns, including fully substituted pyrroles. The method was
Okiko Miyata (1883341) +5 more
core +1 more source
Advanced Science, EarlyView.CeO2‐x/Pt single‐atom nano‐island is constructed via low‐temperature reduction, featuring abundant oxygen vacancies and an island–sea structure. It delivers outstanding multi‐enzyme‐mimetic activity and ROS‐scavenging efficiency. Density functional theory reveals optimized electronic structures and reaction pathways.
Yang Zhu +12 more
wiley +1 more source
Angewandte Chemie, EarlyView.Here we demonstrate that weak HB CH donor cyanostilbenes promote water/ion transport through their ability to form less‐ordered transient water channels within the lipid bilayer with increased water permeability and NO3−/ Cl− selectivity. ABSTRACT Transmembrane water transport strongly depends on how dynamic, translocating water clusters are stabilized
Ioan Stroia +6 more
wiley +2 more sources
Phosphate complexes of calix[4]pyrroles
, 2020 This bachelor’s thesis is about the structure and the properties of different calix[4]pyrroles. Specifically, the binding of calix[4]pyrroles with different phosphate-containing molecules is assessed.
Naulapää, Julia
core
Advanced Science, EarlyView.Phylogenetic and biochemical analyses of the heme transporter CydDC reveal its functional conservation throughout bacterial evolution and demonstrate its unique asymmetric allosteric mechanism. Furthermore, impairment of CydDC function directly affects bacterial antibiotic resistance and likely compromises antibiotic efficacy through drug efflux.
Lili Yang +19 more
wiley +1 more source
Angewandte Chemie, EarlyView.We report a heterogeneous double hydrogen bond/photoredox synergistic catalysis, wherein the flexibility and spatial orientation of catalytic centers, rather than catalyst activity, play a dominant role in catalytic performance. ABSTRACT Catalyst activity is typically the primary priority in designing a catalytic system. The higher catalyst activity is
Jing Ouyang +8 more
wiley +2 more sources
Physical properties of alkyl pyrroles and their salts
, 1959 The structures of the ions formed by several alkyl pyrroles in hydrochloric acid are deduced from proton resonance spectra. Basicity values for three alkyl pyrroles are determined from ultraviolet spectra of their salts in buffer solutions. An attempt is
Bullock, E. +5 more
core +1 more source
Synthesis and practical applications of 2-(2-nitroalkyl)pyrroles
, 2020 Functionalization of pyrroles introducing a 2-nitroalkyl moiety allows the formation of nitro-containing compounds to be used as pivotal intermediates for the synthesis of bioactive compounds.
Palmieri, A, Petrini, M
core +1 more source
Advanced Science, EarlyView.A closed‐loop “Concentrate‐Destroy” strategy is presented for completely eliminating short‐chain and emerging PFAS, in which the new 3D PPy@P‐CF is used for efficiently concentrating PFAS and Cu2+‐mediated photodegradation is applied for the completely destroying PFAS in the sorbent regeneration eluent.
Hao Yu +5 more
wiley +1 more source