Results 101 to 110 of about 10,800 (238)

Catalytic enantioselective nitrone cycloadditions enabling collective syntheses of indole alkaloids

Nature Communications
Tetrahydro-β-carboline skeletons are prominent and ubiquitous in an extraordinary range of indole alkaloid natural products and pharmaceutical compounds. Powerful synthetic approaches for stereoselective synthesis of tetrahydro-β-carboline skeletons have
Xiaochen Tian, Tengfei Xuan, Jingkun Gao, Xinyu Zhang, Tao Liu, Fengbiao Luo, Ruochen Pang, Pengcheng Shao, Yun-Fang Yang, Yang Wang   +9 more
doaj   +1 more source

Publisher Correction: Phosphoric acid-catalyzed atroposelective construction of axially chiral arylpyrroles

Nature Communications, 2019
The original PDF version of this Article contained an error in Table 3, in which all chemical structures were omitted and only the numerical data was shown. This has been corrected in the PDF version of the Article.
Lei Zhang, Shao-Hua Xiang, Jun (Joelle) Wang, Jian Xiao, Jun-Qi Wang, Bin Tan   +5 more
doaj   +1 more source

Asymmetric pentafulvene carbometalation-access to enantiopure titanocene dichlorides of biological relevance [PDF]

, 2015
Unprecedented asymmetric copper-catalyzed addition of ZnEt2 (ZnBu2) to the exocyclic C[DOUBLE BOND]C bond of pentafulvenes C5H4([DOUBLE BOND]CHAr) (Ar=2-MeOPh and related species) results in enantiomerically enriched (up to 93:7 e.r.) cyclopentadienyl ...
Abbenhuis, Berrisford, Bournaud, Brintzinger, Buettner, Cini, Halterman, Herberich, Hogan, Hogan, Honrado, Kirillov, Kramer, Larsson, Lautens, Nakamura, Negishi, Olszewski, processes:, Schur, Sortais, Suzuka, Tinoco, Tshuva, Vassylyev, Woodward   +25 more
core   +2 more sources

2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated CC Bond Formation: Redox Strategies from Stoichiometric to Catalytic Systems

ChemistryOpen, EarlyView.
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone serves as a versatile oxidant and redox catalyst for CC bond formation through hydride abstraction or single‐electron transfer. Stoichiometric and catalytic systems enable benzylic, allylic, and aromatic CH activation under mild, metal‐free conditions, providing sustainable routes to complex and bioactive ...
Dohoon Cha, Sun‐Joon Min
wiley   +1 more source

Stereocontrolled synthesis and functionalization of cyclobutanes and cyclobutanones [PDF]

, 2013
In the last decade a certain number of new cyclobutane and cyclobutanone synthesis and functionalization protocols have been published. Organo- and biocatalyzed eco-friendly approaches to cyclobutane-containing molecules have been developed with ...
FRONGIA, ANGELO, Piras P. P., SECCI, FRANCESCO   +2 more
core   +2 more sources

Structure‐Property‐Application Correlations of Early Transition Metal Chalcogenides: A Dichalcogenide‐Centered Perspective

Small, EarlyView.
ETM‐based chalcogenides exhibit rich structural diversity and tunable electronic and catalytic properties. This review critically summarizes structure–property–application relationships in ETM‐based chalcogenides, highlighting recent advances in electronic devices, electrocatalysis, and energy‐related applications, while outlining key challenges and ...
Sachin Jaidka, Aayush Gupta, Daksh Shelly, Yashpreet Kaur, Anushka Garg, Seul‑Yi Lee, Soo‑Jin Park   +6 more
wiley   +1 more source

Synthesis and Application of a New Cyclic Phosphoric Acid in Enantioselective Three-Component Mannich Reactions

Molecules
A novel point-chiral six-membered cyclic phosphoric acid was synthesized starting from an enantiopure precursor via a concise three-step route. Its catalytic performance was evaluated in enantioselective three-component Mannich reactions. Under optimized
Giovanni Ghigo, Alessio Robiolio Bose, Stefano Dughera   +2 more
doaj   +1 more source

Catalytic Scalable Synthesis of Polyketides Enabled by Chiral Brønsted Acid‐Catalyzed Asymmetric Allylborations

The Chemical Record, EarlyView.
The scalable synthesis of target molecules is crucial for applications such as biological evaluation in medicinal chemistry and even industrial production. We described recent advances in chiral Brønsted acid–catalyzed asymmetric allylboration, which enables access to previously elusive chiral building blocks, and highlight its application to the ...
Shigenobu Umemiya, Masahiro Terada
wiley   +1 more source

Metal‐Free Electrophilic Borylative Cyclizations of Alkynes

The Chemical Record, EarlyView.
Metal‐free borylative cyclizations based on electrophilic alkyne activation by boron Lewis acids provide efficient access to borylated hetero‐ and carbocycles. Early studies using B(C6F5)3 displayed limited scope and application, whereas recent ClBcat‐ and BCl3‐based methods enable mild CB and CC/CX bond formation for the synthesis of cycles ...
Jaime Mateos‐Gil, Marcos Humanes, Manuel A. Fernández‐Rodríguez, Patricia García‐García   +3 more
wiley   +1 more source

Acid‐Catalyzed Synthesis of Si‐Stereogenic Silanes

Chinese Journal of Chemistry, Volume 44, Issue 8, Page 1212-1222, 15 April 2026.
Si‐stereogenic silanes are important structural motifs in chemical synthesis, medicinal chemistry, and materials science. However, their catalytic enantioselective synthesis has largely relied on transition‐metal catalysts. Recently, Brønsted acids have been developed as promising alternatives.
Jung Tae Han, Benjamin List
wiley   +1 more source