Results 21 to 30 of about 104,064 (339)
Frontiers in Chemistry, 2020 A concise and efficient photocatalytic C–C coupling of 1-benzyl-3-cyano-1, 4-dihydropyridine for synthesis of 1,1′-dibenzyl-3, 3′-dicyano-1,1′,4,4′-tetrahydro-4, 4′-bipyridine is described.
Shijun Chen +5 more
doaj +1 more source
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
From Pyridine to (−)‐Agelastatin A
Advanced Synthesis & Catalysis, 2023 Abstract(−)‐Agelastatin A was synthetized employing a flow photorearrangement of a pyridinium salt, constructing in one step the cyclopentene core possessing the desired functionalities and relative configurations. A flow enzymatic kinetic resolution of the resulting bicyclic vinyl aziridine delivered the enantiopure precursor to the natural product ...
Vale, João R. +5 more
openaire +4 more sources
Synthesis of tetrahydrofuro[3,2-c]pyridines via Pictet–Spengler reaction
Beilstein Journal of Organic Chemistry, 2023 A semi-one-pot method for the synthesis of 4-substituted tetrahydrofuro[3,2-c]pyridines by the Pictet–Spengler reaction was developed. The method is based on the condensation of easily accessibly 2-(5-methylfuran-2-yl)ethanamine with commercially ...
Elena Y. Mendogralo, Maxim G. Uchuskin
doaj +1 more source
Fast microwave-assisted oxidation of 1,4-dihydropyridines with FeCl 3.SiO 2 [PDF]
, 2005 Pyridine derivatives are easily obtained in high yields by microwave-promoted rapid oxidation of the corresponding 1,4-dihydropyridines with ferric chloride hexahydrate and silica gel under solvent-free ...
Alaee, E. +4 more
core +1 more source
Synthesis of stereodefined 1-aryl(heteroaryl) substituted 1,2-bis(2-bromopyridin-3-yl)ethenes by selective tandem Suzuki-Miyaura Cross-coupling reactions [PDF]
, 2008 In this communication we show the preparation of stereodefined trisubstituted alkenes 2 can be achieved by sequential selective Suzuki-Miyaura reactions of 2-bromo-3-(2,2-dibromovinyl)pyridines.
Baldino, Salvatore +1 more
core +1 more source
Quaterpyridine Ligands for Panchromatic Ru(II) Dye Sensitizers [PDF]
, 2012 A new general synthetic access to carboxylated quaterpyridines (qpy), of interest as ligands for panchromatic dyesensitized solar cell organometallic sensitizers, is presented.
Abbotto, Alessandro +6 more
core +1 more source
O,N,N-Pincer ligand effects on oxidatively induced carbon–chlorine coupling reactions at palladium [PDF]
, 2015 The syntheses of two families of sterically tuneable O,N,N pro-ligands are reported, namely the 2-(phenyl-2′-ol)-6-imine-pyridines, 2-(C6H4-2′-OH),6-(CMe[double bond, length as m-dash]NAr)C5H3N [Ar = 4-i-PrC6H4 (HL1a), 2,6-i-Pr2C6H3 (HL1b)] and the 2 ...
Cross, WB +4 more
core +1 more source
Highly enantioselective catalytic synthesis of chiral pyridines
Nature Communications, 2017 Chiral pyridines are valuable building blocks in medicinal chemistry applications. Here, the authors report the copper-catalysed Lewis acid-assisted asymmetric alkylation of β-substituted alkenyl pyridines with Grignard reagents affording chiral ...
Ravindra P. Jumde +3 more
doaj +1 more source