Results 21 to 30 of about 11,588 (242)

Redox-neutral and metal-free synthesis of 3-(arylmethyl)chroman-4-ones via visible-light-driven alkene acylarylation

Frontiers in Chemistry, 2022
A metal- and aldehyde-free visible-light-driven photoredox-neutral alkene acylarylation with readily available cyanoarenes is described. A variety of 3-(arylmethyl)chroman-4-ones (i.e., homoisoflavonoids) and analogs are efficiently synthesized with good
Yan Ding, Shengjiao Yu, Man Ren, Ji Lu, Qiang Fu, Zhijie Zhang, Qin Wang, Jun Bai, Na Hao, Lin Yang, Siping Wei, Dong Yi, Jun Wei   +12 more
doaj   +1 more source

Strategies to access the [5-8] bicyclic core encountered in the sesquiterpene, diterpene and sesterterpene series

Beilstein Journal of Organic Chemistry, 2023
Terpene compounds probably represent the most diversified class of secondary metabolites. Some classes of terpenes, mainly diterpenes (C20) and sesterterpenes (C25) and to a lesser extent sesquiterpenes (C15), share a common bicyclo[3.6.0]undecane core ...
Cécile Alleman, Charlène Gadais, Laurent Legentil, François-Hugues Porée   +3 more
doaj   +1 more source

Direct Photoexcitation of Benzothiazolines: Acyl Radical Generation and Application to Access Heterocycles

Molecules, 2021
An acyl radical generation and functionalization strategy through direct photoexcitation of benzothiazolines has been developed. The formed acyl radical species can either be trapped by quinoxalin-2-ones to realize their C(3)-H functionalization or ...
Xiang-Kui He, Juan Lu, Hai-Bing Ye, Lei Li, Jun Xuan   +4 more
doaj   +1 more source

Influence of Monomer Sequence on the Cyclization Behavior of Poly(acrylonitrile-co-acrylamide)

Applied Sciences, 2023
In this research, we have developed the approach to controlled synthesis of acrylonitrile-acrylamide copolymers with narrow molecular weight distribution and various monomer sequence distributions.
Roman V. Toms, Mikhail S. Balashov, Alexander Yu. Gervald, Nikolay I. Prokopov, Anna V. Plutalova, Elena V. Chernikova   +5 more
doaj   +1 more source

Difunctionalization of Dienes, Enynes and Related Compounds via Sequential Radical Addition and Cyclization Reactions

Molecules, 2023
Radical reactions are powerful in creating carbon–carbon and carbon–heteroatom bonds. Designing one-pot radical reactions with cascade transformations to assemble the cyclic skeletons with two new functional groups is both synthetically and operationally
Sanjun Zhi, Hongjun Yao, Wei Zhang
doaj   +1 more source

Synthesis of Indenones via Persulfate Promoted Radical Alkylation/Cyclization of Biaryl Ynones with 1,4-Dihydropyridines

Molecules
The oxidative radical cascade cyclization of alkynes has emerged as a versatile strategy for the efficient construction of diverse structural units and complex molecules in organic chemistry.
Wanwan Wang, Lei Yu
doaj   +1 more source

Atom Exchange Radical Cyclization: A Sustainable Synthetic Approach towards New Functionalized Targets

Applied Sciences
In this study, we demonstrate the direct preparation of dihalo-γ-lactams featuring two distinct halogens from dichloroamides using a novel atom exchange radical cyclization (AERC) procedure.
Biagio Anderlini, Andrea Severini, Camilla Ferrari, Claudio Fontanesi, Vittorio Ascari, Niccolò Braidi, Fabrizio Roncaglia   +6 more
doaj   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Radical-Mediated Trifunctionalization Reactions

Molecules
Synthetic radicals have intrinsic power for cascading and multifunctional reactions to construct diverse molecular scaffolds. In the previous review series, we covered 1,2-difunctionalizations, remote 1,3-, 1,4-, 1,5-, 1,6-, and 1,7-difunctionalizations,
Qiang Zhang, Xiaoming Ma, Sanjun Zhi, Wei Zhang   +3 more
doaj   +1 more source

Azetidine synthesis enabled by photo-induced copper catalysis via [3+1] radical cascade cyclization

The Innovation, 2022
Azetidines are an important type of saturated, highly strained, four-membered, nitrogen-containing heterocyclic compound. These compounds serve as important raw materials, intermediates, and catalysts in organic synthesis, as well as important active ...
Jianye Li, Lu Yu, Yun Peng, Bin Chen, Rui Guo, Xiaodong Ma, Xiao-Song Xue, Yunkui Liu, Guozhu Zhang   +8 more
doaj   +1 more source