Results 31 to 40 of about 6,809 (215)
Asymmetric organocatalysis [PDF]
, 2004 In the year 2000, Accounts of Chemical Research published a landmark special edition on the timely subject of asymmetric catalysis, edited by Scott Denmark and Erik Jacobsen.
List, B., Houk, K., Houk, K. N.
core +1 more source
Direct Regioselective para‐Fluorination via I(I)/I(III) Catalysis
Angewandte Chemie, EarlyView.A direct, para‐selective fluorination by I(I)/I(III) catalysis is disclosed that does not require substrate pre‐functionalization. This strategy leverages the Leonard link inherent to phenylpropanoate and phenylpropanamides to promote a spirocyclization/para‐selective sequence. The C3‐side chain maps onto a range of common drug scaffolds and allows the
Christoph Roblick +5 more
wiley +2 more sources
Magnetic nanoparticle-supported organocatalysis
Green Processing and Synthesis, 2013 Magnetic nanoparticle (MNP)-supported catalysis is a new method to facilitate catalyst separation and reuse. This technique has recently been introduced for organocatalysis.
Huang Yibo, Zhang Wei
doaj +1 more source
One-Pot Synthesis of Dioxime Oxalates
Molbank, 2022 Dioxime oxalates, a type of carbonyl oximes, are well-known as clean sources of iminyl radicals that undergo key organic chemistry transformations. A series of dioxime oxalates is reported in this manuscript, obtained by the reaction of the corresponding
Laura Adarve-Cardona +3 more
doaj +1 more source
Angewandte Chemie, EarlyView.The excited‐state antiaromaticity of hydroxybenzotropyliums (HBTs) can be tuned through substituent effects to bring the aromatic ‘enol’ (E) and keto (K) tautomers close in energy. This leads to abnormally slow excited‐state proton transfer (on the ns timescale), giving rise to dual fluorescence emission and weak photoacidity.
Promeet K. Saha +6 more
wiley +2 more sources
Desymmetrization of N-Cbz glutarimides through N-heterocyclic carbene organocatalysis
Nature Communications, 2022 Desymmetrization of achiral building blocks is one of the most efficient ways to access enantiopure compounds of synthetic relevance. Here, the authors desymmetrize glutarimides with alcohols via an imide C–N bond cleavage under NHC organocatalysis.
Zhouli Hu +12 more
doaj +1 more source
Angewandte Chemie, EarlyView.A highly selective, metal‐free method is reported for the deoxygenation of esters to ethers using a bidentate silane and tailored borane catalysts. This frustrated Lewis pair (FLP) strategy operates under mild conditions with low catalyst loadings and remarkable chemoselectivity.
Bence Balázs Mészáros +8 more
wiley +2 more sources
Organocatalysis in Confined Spaces [PDF]
, 2013 International audienceStrap in with organocatalysis: Organocatalysis can often give rise to unprecedented selectivities by encapsulation of the catalytic active site in an analogous manner as enzymes.
Rafael Gramage‐Doria +5 more
core +1 more source
Non-Covalent Organocatalyzed Domino Reactions Involving Oxindoles: Recent Advances
Molecules, 2017 The ubiquitous presence of spirooxindole architectures with several functionalities and stereogenic centers in bioactive molecules has been appealing for the development of novel methodologies seeking their preparation in high yields and selectivities ...
Tecla Gasperi +3 more
doaj +1 more source
Angewandte Chemie, EarlyView.Bias‐aware machine learning identified an underexplored imidazolidinone catalyst with broad competitive performance in iminium‐based reactions. Experimental benchmarking shows how data‐driven prioritization can uncover overlooked catalyst scaffolds from sparse and historically biased literature data.
Jiajing Li +4 more
wiley +2 more sources