Showing papers in "European Journal of Organic Chemistry in 2009"

TL;DR: In this article, the authors highlight the design and synthesis of organic dyes for dye-sensitized solar cells based on recent work of organic chemists and highlight the relationship between their chemical structures and the photovoltaic performances of DSSCs.

TL;DR: In this article, the basic principles and concepts of quantum chemical CD calculations for the configurational assignment of chiral compounds with stereogenic centers and/or elements of axial or planar chirality are described.

TL;DR: In this article, the authors present an overview of the recently developed transition-metal-catalyzed hydroarylation reactions of alkynes with alkyne activation and arene activation.

TL;DR: The Julia-Kocienski reaction has become indispensable in the synthetic organic chemist's olefination toolbox as discussed by the authors, although the stereochemical outcome of the transformation is sometimes difficult to predict.

TL;DR: In this paper, a microreview highlights new developments of organoselenium chemistry and new selenium compounds as versatile reagents in synthesis, highlighting new developments in organosellium chemistry.

TL;DR: In this paper, the authors focused their attention on cycloisomerization reactions involving silver and gold-based homogeneous catalysis and discussed the impact of the choice of counterion or metal (silver vs. gold) in the course of the reaction.

TL;DR: This review focuses on the discussion of amino acid modifications, backbone modifications, global restrictions by cyclisation and on synthetic backbone scaffolds in peptidomimetics.

TL;DR: In this paper, an overview of the emerging field of catalyzed substitutions of propargylic alcohols and their derivatives is presented, and some enantioselective methods are discussed.

TL;DR: In this article, the authors thank the Ministry of Science and Education (MEC) (Project CTQ2007-67532-C02-01) for financial support of their research.

TL;DR: In this article, the photochemical transformations associated with photochromic compounds can be exploited to switch the emission of complementary fluorophores under the influence of optical stimulations, and some of these ingenious mechanisms for fluorescence modulation can be extended from relatively small molecular and supramolecular assemblies to large macromolecular, nanostructured and biomolecular constructs.

TL;DR: In this article, high-temperature organic synthesis can be performed under continuous flow conditions in a stainless steel microtubular flow reactor capable of achieving temperatures of 350 °C and 200 bar.

TL;DR: In this paper, the catalytic combination of inexpensive copper salts and 1,10-phenanthroline as a ligand was used for homocoupling of arylboronic acids.

TL;DR: In this article, the second-order rate constants k2 for the attack on the electrophiles by the amines were determined from the linear free energy relationship log(k2 (20 °C) = s(N + E).

TL;DR: In this article, the synthesis of anion receptors that utilize boron-fluoride interactions and (C−H)+···F-type ionic hydrogen-bond interactions in the binding of F ions is reported.

TL;DR: In this article, the main target of the microreview is to outline some of the reactive peculiarities that make 1,2-diaza-1,3-dienes reactive.

TL;DR: In this article, the occurrence of fluorescence as well as the wavelength were found to be strongly dependent on the substituents, which have to be electronegative heteroatoms.

TL;DR: In this article, a Fe(ClO4)3·xH2O-catalyzed oxidative esterification of aldehydes was developed, in which the primary and secondary alcohols were used as the solvent and an iron salt catalyst (10 mol-%) and hydroperoxide (4 equiv.) was used as an oxidant to generate the corresponding esters.

TL;DR: The present review will concentrate on the design and implementation of systems based on small, synthetic organic molecules that can reproduce themselves, a highly attractive one for the burgeoning field of systems chemistry.

TL;DR: In this article, a copper-aluminium hydrotalcite (CuAl-HT)/K2CO3 was employed in the activation of various benzyl alcohols with benzylamines to afford the corresponding amines in good to high yields.

TL;DR: In this article, a stereoinversion of one amine enantiomer was achieved by a one-pot, two-step procedure: in the first step, kinetic resolution of the chiral racemic amine was performed by employing a ω-transaminase to yield an intermediate ketone and the remaining optically pure amine.

TL;DR: A review of the application of Palladium-catalysed cross-coupling reactions in synthetic chemistry can be found in this paper, where a deeper insight into well-established processes is provided, which alerts us to new synthetic transformations.

TL;DR: In this paper, the authors employed a silicon-stereogenic silane as astereochemical probe to clarify the mechanism of the B(C6F5)3-catalyzed hydrosilylation of ketones.

TL;DR: The second-order rate constants for the reactions of 3c-f and 2e-g with the carbanions 9a-h were determined photometrically in DMSO as mentioned in this paper.

TL;DR: In this article, a new class of mechanized silica nanoparticles, which exploits the stability of the inclusion complexes formed between ferrocenedicarboxylic acid and both cucurbit[7]uril (CB7) and β-cyclodextrin (β-CD), are described.

TL;DR: In this article, the role of zeolite acidic sites in the reaction has been pointed out, showing that a strong influence of the pore size has been observed, high (quantitative) yields being obtained with zeolites having large internal cages.

TL;DR: In this article, a series of benzofuro[2,3-c]oxazolo[4,5-a] carbazole-type fluorophores (1a-1d) having cyano groups as acceptor were found to exhibit mechanofluorochromism.

TL;DR: In this article, the authors identify important advances in the asymmetric synthesis of fully substituted five-membered carbocyclic ring systems and highlight strategies featuring high levels of stereocontrol and conciseness in the total number of synthetic steps required to access complex natural product ring fragments.

TL;DR: A review of recent developments of rhodium(I)-catalyzed tandem transformations with organoboron compounds involving the formation of multiple carbon-carbon bonds can be found in this paper.