Results 1 to 10 of about 79 (63)
Allylation of Functionalized Aldehydes by Potassium Allyltrifluoroborate Catalyzed by 18-Crown-6 in Aqueous Media [PDF]
Molecules, 2012 An efficient method for the allylation of aldehydes containing a broad range of functional groups using potassium allyltrifluoroborate is described.
Roberta A. Oliveira +4 more
doaj +7 more sources
A Green Approach for Allylations of Aldehydes and Ketones: Combining Allylborate, Mechanochemistry and Lanthanide Catalyst [PDF]
Molecules, 2016 Secondary and tertiary alcohols synthesized via allylation of aldehydes and ketones are important compounds in bioactive natural products and industry, including pharmaceuticals.
Viviane P. de Souza +6 more
doaj +4 more sources
Gold(I)-Catalyzed Nucleophilic Allylation of Azinium Ions with Allylboronates. [PDF]
Angew Chem Int Ed Engl, 2022 Gold(I)‐catalyzed nucleophilic allylations of pyridinium and quinolinium ions with allylboronates are reported. Transmetalation of the allylboronate with gold produces nucleophilic allylgold(I) species that add to the 4‐position of the azinium ion with complete regioselectivity to give functionalized 1,4‐dihydropyridines and 1,4‐dihydroquinolines ...
O'Brien L, Argent SP, Ermanis K, Lam HW.
europepmc +3 more sources
Rhoda-Electrocatalyzed C-H Methylation and Paired Electrocatalyzed C-H Ethylation and Propylation. [PDF]
Chemistry, 2022 Rhodium‐electrocatalyzed C−H alkylation of N‐heteroarenes has been established by using sustainable and eco‐friendly electrocatalytic approaches. As a result, several arenes, including biologically relevant purines, diazepam, and amino acids were selectively methylated.
Kuciński K, Simon H, Ackermann L.
europepmc +2 more sources
Design and Experimental Validation of a Photocatalyst Recommender Based on a Large Language Model. [PDF]
Angew Chem Int Ed EnglChoosing a photocatalyst for a given reaction can be challenging due to complex mechanisms and multiple parameters that govern the outcome of a photocatalyzed reaction. Herein, we disclose a machine learning (ML) model that can suggest catalysts for a given reaction using an online portal.
Millward F +13 more
europepmc +2 more sources
Tetrahedron Letters, 2013 AbstractThe use of the framework [Eu2(fum)3(H2O)4]·(3H2O), Eu-MOF, as catalyst for allylation of aldehydes by potassium allyltrifluoroborate is described. The method features the use of small catalyst loads and wet solvents, and the products were obtained in high yields, short reaction times, at room temperature with no further purification.
Paulo H Menezes +2 more
exaly +2 more sources
Enantioselective Rhodium-Catalyzed Allylation of Cyclic Imines with Potassium Allyltrifluoroborates [PDF]
Synthesis, 2013 This Article presents further examples of the enantioselective rhodium-catalyzed addition of potassium allyltrifluoroborates to cyclic imines. A wide range of substituted allyltrifluoroborates are compatible with this process, and provide protected homoallylic amines with high levels of diastereo- and enantioselection.
Hepburn, Hamish B. +3 more
openaire +4 more sources
A Scalable Synthesis of Chiral Himbert Diene Ligands for Asymmetric Catalysis
Advanced Synthesis &Catalysis, Volume 365, Issue 10, Page 1629-1639, May 23, 2023., 2023 Abstract Chiral dienes are important ligands in asymmetric catalysis but they are less accessible than other commonly used ligands such as chiral bisphosphines. Here, we show that intramolecular [4+2] cycloaddition of a simply attained chiral allenecarboxanilide readily affords pseudoenantiomeric bicyclo[2.2.2]octa‐2,5‐dienes containing an alkenyl ...
Raja K. Rit +5 more
wiley +1 more source