Showing papers in "European Journal of Organic Chemistry in 2004"

TL;DR: Aromatic oligoamide foldamers possess a high potential for mimicking the secondary structures of biopolymers as discussed by the authors and can be easily designed, easy to synthesize, and allow one to reach a wide range of stable folded states.

TL;DR: In this article, an overview of the potential of 1,3-dicarbonyl derivatives for the selective construction of highly functionalised small organic molecules of high synthetic and biological value is presented.

TL;DR: In this paper, the authors provide an overview of the field and cover organometallic aspects as well as synthetic applications, and provide a pathway to the development of novel catalyzed reaction sequences that combine ruthenium carbene- and ruthensium-hydride-mediated steps.

TL;DR: In this paper, the chemistry of thiacalixarenes, a new member of the calixarene family with four sulfur atoms in the place of methylene groups, is discussed.

TL;DR: Copper-catalysed Narylation of pyrazoles with aryl or heteroaryl bromides or iodides, which can include functional substituents, was performed under the mildest conditions yet described, by the use as catalyst of a combination of cuprous oxide with a set of inexpensive, chelating oxime-type ligands not previously known to promote such reactions.

TL;DR: An overview of recent results in these areas can be found in this paper, where a considerable number of publications have appeared that focus on the enantioselective addition of acetylenes to carbonyls and imines.

TL;DR: In this paper, the authors present a microreview of the uses of bismuth(III) triflate in organic synthesis, which is a new, cheap and environmentally friendly Lewis acid.

TL;DR: A survey of the most recent advances in this field is described in this paper, including transformations of allylsilanes through electrophilic, radical and organometallic processes, with particular emphasis on the stereocontrol arising from these processes.

TL;DR: In this paper, Triphenylphosphane (TPP) was used as a novel and efficient catalyst for the Knoevenagel condensation of aldehydes with acidic methylene compounds such as ethyl cyanoacetate and malononitrile to afford substituted olefins.

TL;DR: Bile acid-based structures have become increasingly important in different fields of chemistry over recent years, having found applications in pharmacology, supramolecular chemistry and nanoscience as mentioned in this paper.

TL;DR: In this article, the reaction of aziridines with CO2 and epoxide with CS2 were also examined under the same reaction conditions, and it was shown that the simplest binaphthyldiamino Schiff base gave the highest yield of cyclic carbonate.

TL;DR: In this article, a review of manganese-, iron-, chromium-, and cobalt-catalyzed carbon−carbon bond formation reactions using Grignard reagents is presented.

TL;DR: In this article, the latest synthetic strategies to prepare 2,2′-bipyridine and its mono-substituted, symmetrical and unsymmetrical 3,3′-, 4,4′-, 5,5′-, and 6,6′-disubstitized derivatives are critically discussed and evaluated.

TL;DR: Recent progress in synthetic approaches to the Mitsunobu reaction is reviewed in this paper, focusing on phase-switching modifications of phosphane, azodicarboxylate, and nucleophilic components.

TL;DR: In this article, the [3+2] cycloaddition of nonactivated terminal alkynes and trimethylsilyl azide has been shown to yield N-unsubstituted triazoles in good to high yields.

TL;DR: The electrophilic amination constitutes an unconventional C−N bond-forming reaction as discussed by the authors, and asymmetric versions have been developed using chiral reagents or catalysts and starting from optically pure substrates.

TL;DR: In this article, an efficient synthesis of bis(indolyl)methanes through FeIII-catalyzed electrophilic substitution reactions of indoles with various aldehydes in ionic liquid is described.

TL;DR: In this paper, the inductive and dispersive interactions of solvents were empirically evaluated for the first time by using 3,20-di-tert-butyl (ttbP9) as a probe, which exhibits a very strong first electronic transition with a marked vibronic structure that is very well resolved from the second electronic transition.

TL;DR: The recent developments of mainly catalytic and enantioselective hetero-Diels−Alder reactions of ketones are presented in this article, where the use of different chiral copper(II) and zinc (II) catalysts are shown and the usage of the H-D-Alder adducts in organic synthesis presented.

TL;DR: In this paper, an interesting significant captodative effect is shown for the first time for the oxidation of substituted benzyl alcohols; the importance of enthalpic and polar effects is emphasised.

TL;DR: An improved protocol for the synthesis of N-substituted pyridine-2-thiocarboxamides under the conditions of the Willgerodt−Kindler reaction, employing a catalytic amount of sodium sulfide nonahydrate, has been developed as discussed by the authors.

TL;DR: In this article, N-Aryl-substituted imidazoles 14b, 15b and thiazoles 17−22, 25 were obtained which contain a stereogenic axis and which can occur as atropisomers.

TL;DR: In this article, the P*-monodentate diamidophosphite ligands have been obtained by a one-step phosphorylation of alcohols or amines.

TL;DR: In this paper, a case study for gas-solid interfaces is presented, where the specific interactions operating at each phase level can be ferreted out by using MS and crystallographic analyses, respectively.

TL;DR: In this paper, a continuous-flow reactor with a monolithic glass/polymer composite interior is designed for the transfer-hydrogenation of alkenes, alkynes, nitro-substituted aromatic compounds and benzyl ethers.

TL;DR: In this paper, a three-component condensation of an aldehyde, β-keto ester, and urea proceeds smoothly on the surface of the silver salt of heteropolyacid (HPA), i.e. Ag3PW12O40, in water to afford the corresponding 3,4-dihydropyrimidinones in high-to-quantitative yields under mild conditions.

TL;DR: Amines are efficiently acylated by both cyclic and acyclic anhydrides by dissolving them in an aqueous medium with the help of a surfactant, sodium dodecyl sulfate (SDS) as discussed by the authors.

TL;DR: In this article, the Pd-catalyzed coupling reaction involving propargylic/allenylic species is discussed, and the key intermediates for the selective formation of either allenes or alkynes are proposed.

TL;DR: The discovery that post-translational farnesylation of Ras oncoprotein was an essential step in exercising its biological effect led to the design of Farnesyl protein transferase inhibitors (FTIs) in order to control growth of tumors bearing Ras mutations as mentioned in this paper.

TL;DR: In this article, Li+ ion has been found to be an inexpensive and efficient catalyst for the opening of epoxide rings by amines, and this provides an environmentally friendly method for the synthesis of β-amino alcohols.