Results 21 to 30 of about 2,492,262 (305)
Molecules, 2022 Known as electrophiles, maleimides are often used as acceptors in Michael additions to produce succinimides. However, reactions with maleimides as nucleophiles for enantioselective functionalization are only rarely performed.
Hongwen Mu +4 more
doaj +1 more source
Synthesis of novel β-aminocyclobutanecarboxylic acid derivatives by a solvent-free aza-Michael addition and subsequent ring closure [PDF]
, 2011 Novel beta-aminocyclobutanecarboxylic acid derivatives were prepared via a sequential solvent-free aza-Michael addition of benzophenone imine across 3-halopropylidenemalonates and base-induced ring closure.
Aitken +44 more
core +1 more source
Organocatalytic Asymmetric Deconjugative Michael Additions. [PDF]
ChemInform, 2006 AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Bell, Mark +2 more
openaire +3 more sources
Electron-rich triarylphosphines as nucleophilic catalysts for oxa-Michael reactions
Beilstein Journal of Organic Chemistry, 2021 Electron-rich triarylphosphines, namely 4-(methoxyphenyl)diphenylphosphine (MMTPP) and tris(4-trimethoxyphenyl)phosphine (TMTPP), outperform commonly used triphenylphosphine (TPP) in catalyzing oxa-Michael additions.
Susanne M. Fischer +3 more
doaj +1 more source
Impact of rapeseed press-cake on Maillard reaction in a cookie model system [PDF]
, 2018 Rapeseed press-cake (RPC) is a byproduct of rapeseed oil production, rich in proteins and fiber. The aim of this study was to investigate the impact of cold pressed RPC, RPC fiber isolate and RPC alkaline extract on the formation of acrylamide and 5 ...
Fiore, Alberto +2 more
core +2 more sources
One-step synthesis of pyridines and dihydropyridines in a continuous flow microwave reactor [PDF]
, 2013 The Bohlmann–Rahtz pyridine synthesis and the Hantzsch dihydropyridine synthesis can be carried out in a microwave flow reactor or using a conductive heating flow platform for the continuous processing of material. In the Bohlmann–Rahtz reaction, the use
Bagley, Mark C +4 more
core +2 more sources
A Simple Zinc-Mediated Method for Selenium Addition to Michael Acceptors
Molecules, 2020 In this work, we focused our attention on seleno-Michael type reactions. These were performed using zinc-selenolates generated in situ from diphenyl diselenide 1, 1,2-bis(3-phenylpropyl)diselenide 30, and protected selenocystine 31 via an efficient ...
Francesca Giulia Nacca +4 more
doaj +1 more source
Enantioselective Organocatalyzed Michael Addition of Isobutyraldehyde to Maleimides in Aqueous Media
Molecules, 2022 Thiourea was introduced into (R,R)-1,2-diphenylethylenediamine as an organocatalyst to promote the reaction between isobutyraldehydes and maleimides. Enantioselective Michael addition reaction was carried out as an eco-friendly method using water as the ...
Jae Ho Shim +3 more
doaj +1 more source
Substrate control in stereoselective lanthionine biosynthesis. [PDF]
, 2015 Enzymes are typically highly stereoselective catalysts that enforce a reactive conformation on their native substrates. We report here a rare example in which the substrate controls the stereoselectivity of an enzyme-catalysed Michael-type addition ...
Houk, KN +3 more
core +2 more sources
Orbital: The Electronic Journal of Chemistry, 2012 In an attempt to obtain Michael adducts in aqueous medium, 1,3-cyclohexanedione (1) or dimedone (2) and acetylenedicarboxylic acid monopotassium (3) were dissolved in water and heated to reflux. Under these conditions, two products were isolated
Leonardo Ribeiro Martins +2 more
doaj +1 more source