Results 101 to 110 of about 44,314 (270)
Angewandte Chemie, EarlyView.An enantioselective rhodium‐catalyzed [2 + 2 + 2] cycloaddition enables the synthesis of axially chiral diaryl ethers. Carbonyl coordination ensures high reactivity and regioselectivity, affording products bearing up to four stereogenic axes with good enantio‐ and diastereoselectivity.
Yu Sato +3 more
wiley +2 more sources
Structural decomposition analysis of the cycloaddition reaction.
, 2015 Structural decomposition analysis of the cycloaddition reaction involved in the biosynthesis of Spinosyn A into principal components (the atom numbering was the same as in compound 1 for comparative purpose).
Valentine P. Ananikov (718886) +1 more
core +1 more source
Catalytic Functionalization of Unactivated π‐Bonds Enabled by Bidentate Directing Auxiliaries
Angewandte Chemie, EarlyView.This review explores how bidentate directing auxiliaries have advanced transition‐metal catalysis for unactivated alkene/alkyne functionalization. By leveraging chelated intermediates, bidentate directing auxiliaries enable precise hydrofunctionalization, difunctionalization, and C─H activation of π‐bonds with unique selectivity and reactivity.
Seunghyeon Cho +4 more
wiley +2 more sources
Synthesis of functionalised sulfonamides
, 2008 Sulfonamides are important therapeutic agents and have a diverse array of biological functions in biology and medicine. Their means of synthesis has often involved the use of unstable sulfonyl chloride species; however, recent research has established ...
Mok, B.L.
core
Nanographene‐Based van der Waals Organic Framework With Permanent Porosity
Angewandte Chemie, EarlyView.Unlocking record‐breaking porosity in a supramolecular organic framework (SOF). Through the strategic design of a C3‐symmetric nanographene, a robust supramolecular framework is achieved via exclusively weak van der Waals forces. This metal‐free scaffold reaches a benchmark BET surface area of 1108 m2 g−1 –the highest to date for this class–combining ...
Arturo Oró +5 more
wiley +2 more sources
Theoretical studies on cycloaddition reactions
Journal of Cheminformatics, 2014 Cycloaddition reactions represent one of the most powerful processes in organic chemistry. The most common types of cycloaddition reactions are the Diels-Alder (DA) and the 1,3-dipolar cycloaddition reactions (1,3-DCs) which lead to five and six membered rings, respectively. In our ongoing efforts to contribute to the understanding of DA and 1,3-DCs;
Lydia Rhyman +2 more
openaire +1 more source
, 2012 Borondipyrromethenes (BODIPY) are a class of fluorescent dyes whose fluorescence quantum yields are generally high and independent of the solvent. In this paper, we report the synthesis of a new type of BODIPY compound that carries an azido group on the ...
Suthiwangcharoen, Nisaraporn +5 more
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Time-Resolved Mechanism of the Cycloaddition Reaction between Difluorocarbene and Norbornadiene
Cycloaddition between difluorocarbene and norbornadiene is a stepwise process where a non-linear cheletropic transition state (TS1) leads to a diradical intermediate, followed by 1,2- and 1,4-addition.
Yuchen, Zhang +2 more
core +1 more source
The Reactivity of Addends in the 1,3-Dipolar Cycloaddition Reaction [PDF]
, 1984 The influence of donor-acceptor interactions and localisation energies on the reactivity of addends in the 1,3-dipolar cycloaddition reaction is examined.
Samuilov Y., Konovalov A.
core
Reversible [4 + 2] cycloaddition reaction of 1,3,2,5-diazadiborinine with ethylene
, 2015 Under ambient conditions, a [4 + 2] cycloaddition reaction of 1,3,2,5-diazadiborinine 1 with ethylene afforded a bicyclo[2.2.2] derivative 2, which was structurally characterized. The cyclization process was found to be reversible, and thus retro-[4 + 2]
Hoo, Sin Ni +5 more
core +1 more source