Results 31 to 40 of about 9,019 (233)
, 2019 A general approach is described for the formation of tetrahydrothiepines using donor-acceptor cyclopropanes. Thiochalcones, functioning as sulfur-containing four-atom building blocks, were reacted in a Lewis-acid-catalyzed formal (4+3)-cycloaddition ...
André U., Augustin +4 more
core +1 more source
Asymmetric Titanium-Catalyzed Cyclopropanation of Nitriles with Grignard Reagents
SynOpen, 2018 The titanium-catalyzed asymmetric cyclopropanation of cyanoesters with Grignard reagents was investigated for the first time. Particularly, the study of the efficiency of Taddol-based titanium complexes has shown that the prior preparation of Taddol ...
Julien Caillé +4 more
doaj +1 more source
Advanced Materials, EarlyView.In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal +9 more
wiley +1 more source
Photochemical Allylation of Aldehydes or Alkanes with Vinyl Cyclopropanes
ChemistryEuropeVinyl cyclopropanes are useful linchpins for the synthesis of more complex scaffolds. In this work, we present an acylation or alkylation protocol of donor–acceptor vinyl cyclopropanes, employing tetra‐n‐butylammonium decatungstate as the photocatalyst ...
Naya A. Stini, Christoforos G. Kokotos
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2013 A range of metathesis substrates was assembled from triplets of unsaturated building blocks. The approach involved the iterative attachment of a propagating and a terminating building block to a fluorous-tagged initiating building block.
Sushil K. Maurya +3 more
doaj +1 more source
The Synthesis of Functionalized Dimethylphosphinoyl Cyclopropanes and Cyclobutanes
Журнал органічної та фармацевтичної хімії, 2023 A simple preparative approach to a series of functionalized dimethylphosphinoyl-containing cyclopropanes and cyclobutanes has been developed; it is based on cyclocondensation of dimethylphosphinoyl acetonitrile with 1,2- and 1,3-dibromoalkanes. Synthetic
Anastasiia M. Aleksandrova +2 more
doaj +1 more source
Advanced Science, EarlyView.We report a new thiolate‐reactive α,α‐gem‐dibromo lactam warhead that activates transcription factor Nrf2 and demonstrates anti‐inflammatory activities, which have implications in cancer, neurodegeneration, and cardiovascular diseases. RNA‐seq illuminated detailed transcriptional profiles, and chemical reactions with cysteine‐containing compounds ...
Beau R. Brummel +16 more
wiley +1 more source
An Approach to 1,1-Disubstituted Pyrazolylcyclopropane Building Blocks
SynOpen, 2017 An approach to isomeric 1,1-disubstituted pyrazolylcyclopropanes that relies on lithium diisopropylamide (LDA) mediated bis-alkylation of the corresponding pyrazolylacetonitriles is developed.
Pavel S. Nosik +3 more
doaj +1 more source
Advanced Science, EarlyView.We developed a series of quinoxalinoquinoxaline (QQ) photosensitizers featuring high and tunable excited‐state reduction potentials (E(PC•+/PC*) = –1.76 to –2.05 V vs. SCE). Their hydrogen‐bonding interaction with carbonyl substrates enables selective single‐electron transfer events for selective nitrilization of 1° amides, offering a tunable ...
Seongwoo Bae, Dongwook Kim, Jinwoo Kim
wiley +1 more source