Results 111 to 120 of about 14,677 (287)
Angewandte Chemie, Volume 138, Issue 17, 20 April 2026.The second‐generation crystalline sponge method allows structurally diverse molecular guests to crystallize under standardized crystallization conditions. The key is the predominant packing type of cages and anions in crystals. ABSTRACT Crystallization is typically highly sensitive to even minor structural differences in target molecules.
Wei He, Hiroki Takezawa, Makoto Fujita
wiley +2 more sources
Aza‐Prins Cyclization on Ketones to Access Piperidines with Tetrasubstituted Carbon Stereocenters [PDF]
, 2023 Alexandre Bergounioux +5 more
openalex +1 more source
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.The enantioselective synthesis of naphthocoumarin adducts via a tandem organocatalytic 1,4‐addition/decarboxylation delivers excellent control over a newly forged stereocenter and yields configurationally stable synclinal atropisomers. The process features broad substrate scope and scalability, and its structural and mechanistic foundations are ...
M. Chiara Cabua +10 more
wiley +1 more source
Total Synthesis of the Spirocyclic Bis‐Indole Alkaloid (−)‐Owerreine via a [4+2] Annulation
Angewandte Chemie, Volume 138, Issue 17, 20 April 2026.The total synthesis of the bis‐indole alkaloid (−)‐owerreine has been accomplished by a diastereoselective [4+2] annulation between an enamine and an α,β−unsaturated indolenine precursor to form the 3‐spirocyclic tetrahydropyridine linkage of the natural product. DFT calculations allow an understanding of the mechanism of the key annulation.
Elisa Coll +4 more
wiley +2 more sources
Organocatalytic C─O Bond Cleavage and Asymmetric Transformations via [1,3]‐Sigmatropic Rearrangement
Advanced ScienceHere, an organocatalytic asymmetric [1,3]‐sigmatropic rearrangement process for aryl ether insertion through C─O bond cleavage and downstream transformation is reported, enabling the practical and atom‐economic synthesis of diverse valuable chiral ...
Lei Peng +7 more
doaj +1 more source
Asymmetric Synthesis of All-Carbon Benzylic Quaternary Stereocenters via Conjugate Addition to Alkylidene Meldrum’s Acids [PDF]
, 2015 Eric B. Beaton
openalex +1 more source
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.This minireview outlines recent advances in chain‐walking reactions of nonallylic alkenyl alcohols catalyzed by various transition metals, including palladium, ruthenium, rhodium, iridium, and nickel. Furthermore, the corresponding reaction mechanisms are discussed.
Yong Huang +5 more
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 17, 20 April 2026.A NiH‐catalyzed α‐alkenylation via Markovnikov hydronickellation of alkynes enables convenient access to α‐chrial β‐methylene carbonyl frameworks that are prevalent in biorelevant molecules. High regio‐ and enantioselectivities have been achieved with excellent functional group tolerance and applicability toward complex structures. The β‐methylene unit
Hyeontaek Nam +3 more
wiley +2 more sources
Dearomatization with Axial‐to‐Central Chirality Conversion
European Journal of Organic Chemistry, Volume 29, Issue 17, 5 May 2026.Atropisomers are exciting synthetic targets with unique properties, which find applications in many fields of chemistry. However, considering them as substrates is not very frequent, notably in the context of dearomatization reaction. We wish to discuss the different strategies for the dearomatization of aromatic atropisomers with axial‐to‐central ...
Morgane Mando +3 more
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 17, 20 April 2026.Rh‐catalyzed chemodivergent parallel kinetic resolution of racemic 1,6‐enynes with α‐fluoroacrylamides or mixtures of different acrylamides proceeded via [2+2+2] cycloaddition and C–H alkylation to afford structurally and stereochemically distinct products with high selectivity under mild conditions.
Shintaro Hamada +5 more
wiley +2 more sources