Results 71 to 80 of about 10,332 (223)
‐Allylation of α‐Hydroxy Carbonyl Compounds [PDF]
, 2006 alpha-Hydroxy carbonyl compounds undergo smooth O-allylation using allylic carbonates and Pd(0) catalysts. This method has significant advantages over other O-allylation methods as it provides a solution to several problems previously observed for this ...
Schmidt, Bernd (Prof. Dr.) +3 more
core +1 more source
Palladium and Organocatalysis: An Excellent Recipe for Asymmetric Synthesis
Molecules, 2013 The dual activation of simple substrates by the combination of organocatalysis and palladium catalysis has been successfully applied in a variety of different asymmetric transformations.
Isidro M. Pastor +3 more
doaj +1 more source
Alkali‐Metal Base Catalyzed Electrocyclization of Isoprene Derivatives
Chemistry – A European Journal, Volume 32, Issue 27, 17 July 2026.Simple and abundant alkali‐metal base catalysis in combination with Lewis basic polyamines enables the electrocyclization of isoprene‐derived trienes to cycloheptadienes under neat conditions. Mechanistic insight supported by DFT guides a scalable route to seven‐membered carbocycles which, after reduction, give saturated cycloalkanes relevant as ...
Mikaël Le Roch +3 more
wiley +1 more source
Raising the Diversity of Ugi Reactions Through Selective Alkylations and Allylations of Ugi Adducts
Frontiers in Chemistry, 2019 We report here selective Tsuji-Trost type allylation of Ugi adducts using a strategy based on the enhanced nucleophilicity of amide dianions. Ugi adducts derived from aromatic aldehydes were easily allylated at their peptidyl position with allyl acetate ...
Alaa Zidan +5 more
doaj +1 more source
Palladium-Catalyzed Cascade Wacker/Allylation Sequence with Allylic Alcohols Leading to Allylated Dihydropyrones [PDF]
ACS Omega, 2017 We describe a cascade Wacker/allylation sequence of β-hydroxy ynones by directly using simple allylic alcohols. This palladium(II)-catalyzed reaction occurs under mild conditions (0 °C to room temperature) and provides a new and efficient synthetic method for the preparation of allylated dihydropyrones.
Wen-Yu Huang +2 more
openaire +3 more sources
Enantioselective Conjugate Allylation of Cyclic Enones [PDF]
, 2016 Enantioselective organocatalytic 1,2-allylation of a cyclic enone followed by anionic oxy-Cope rearrangement delivered the ketone as a mixture of diastereomers.
James F. Berry (1915708) +2 more
core +1 more source
Molecules, 2011 Bis(oxazolinyl)phenylrhodium(III) aqua complexes, (Phebox)RhX2(H2O) [X = Cl, Br], were found to be efficient Lewis acid catalysts for the enantioselective addition of allyl- and methallyltributyltin reagents to amino aldehydes.
Hisao Nishiyama +5 more
doaj +1 more source
One-Pot Sequential Deoximation and Allylation Reactions of Aldoximes in Aqueous Solution [PDF]
, 2013 [[abstract]]A simple procedure has been developed for conducting tin-mediated deoximation and allylation reactions of aldoximes in water to form homoallylic alcohols.
Lin, Mei-Huey; Lin, Long-Zhi; Chuang, Tsung-Hsun; Liu, Han-Jun
core
Direct Allylation of Quinones with Allylboronates [PDF]
, 2016 Allylboronates undergo C–H allylation of unsubstituted or monosubstituted benzoquinone and naphthoquinone substrates. In the case of 2,5- or 2,6-disubstituted quinones addition involving the substituted carbon takes place.
Dong Wang (73290) +2 more
core +1 more source
MoleculesIn the category of drugs approved by the U.S. FDA, pyrrolidine is the most frequently used core of five-membered nonaromatic heterocycles containing nitrogen.
Maocheng Tang +5 more
doaj +1 more source