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Showing papers in "Tetrahedron in 2008"


Journal ArticleDOI
TL;DR: In this article, a new isoreticular metal framework (IRMOF-0), having the same cubic topology as MOF-5, was synthesized from acetylenedicarboxylic acid using this method to accommodate the thermal sensitivity of the linker.

819 citations


Journal ArticleDOI
TL;DR: New developments of various reactions of α-diazocarbonyl compounds have been reviewed in this article, which primarily focuses on the literatures published since 2003, focusing on the literature published in 2003.

637 citations



Journal ArticleDOI
TL;DR: A review of cyclic compounds from the Baylis-Hillman chemistry covering the literature from 2003 to 2007 can be found in this article, where several reaction strategies leading to these cyclic frameworks are delineated in the figure.

473 citations


Journal ArticleDOI
TL;DR: The most recent developments of asymmetric cyclopropanation in various reaction types, such as ring closure reactions, transition-metal-catalysed decomposition of diazoalkanes, and miscellaneous reactions, covering the literature from 2003 to 2007, are discussed in this paper.

452 citations



Journal ArticleDOI
TL;DR: Gold-catalyzed reactions of C-H bonds, with a particular emphasis on C-C, C-O, and C-N bond formations, are reviewed in this article.

342 citations


Journal ArticleDOI
TL;DR: The use of stereoisomers has always been a reliable method of obtaining enantiomerically pure compounds, but the fundamental limitation of the yield to 50% has made it thoroughly unfashionable as mentioned in this paper.

299 citations



Journal ArticleDOI
TL;DR: In this paper, a catalytic system consisting of [Cp ∗ IrCl 2 ] 2 /NaHCO 3 for the N-alkylation of amines with primary and secondary alcohols as alkylating reagents has been developed.

274 citations


Journal ArticleDOI
TL;DR: 4H-Chromene and N-arylquinoline derivatives are obtained in good to excellent yields by proceeding through a simple, mild, and efficient procedure utilizing tetrabutylammonium fluoride (TBAF) as catalyst.


Journal ArticleDOI
TL;DR: In this article, a simple and efficient method from the three-component condensation reaction of phthalhydrazide, dimedone, and aromatic aldehydes under solvent-free conditions was presented.


Journal ArticleDOI
TL;DR: In this article, a sequential catalytic process based on gold-catalyzed nucleophilic addition of terminal alkynes to imines, and gold-car catalyzed intramolecular reaction of aromatic ring to alkynes was developed.

Journal ArticleDOI
TL;DR: Carbonyl ene reactions are reviewed in this article, highlighting the variants of ene reaction that are readily accomplished, along with more challenging reactions Both intermolecular, intramolecular and Conia ene reactivities are highlighted

Journal ArticleDOI
TL;DR: In this article, a novel organic cyanine dye containing triphenylamine-benzothiadiazole dyad has been synthesized and applied successfully to sensitization of nanocrystalline TiO 2 -based solar cell.

Journal ArticleDOI
TL;DR: In this article, a four-component reaction of aldehydes, dimedone, active methylene compounds, and ammonium acetate in one-pot under solvent-free conditions at room temperature on grinding is described.

Journal ArticleDOI
TL;DR: An efficient and direct protocol for the preparation of amidoalkyl naphthols employing a multi-component and one-pot condensation reaction of 2-naphthol, aromatic aldehydes, and acetonitrile or acetamide in the presence of silica supported perchloric acid under solvent, solvent-free, and microwave irradiation conditions is described in this paper.

Journal ArticleDOI
TL;DR: Readingily available copper powder with K2CO3 as the base was extremely effective catalyst for Suzuki–Miyaura coupling reaction performed in PEG-400, which afforded almost quantitative coupling products of aryl iodides.


Journal ArticleDOI
TL;DR: Seven new prenylated indole diketopiperazine alkaloids have been isolated from the holothurian-derived fungus Aspergillus fumigatus, along with 12 known ones, determined on the basis of extensive spectroscopic data and amino acid analysis.

Journal ArticleDOI
TL;DR: In this article, the role of the pivalic acid additive is rationalized by invoking a concerted palladation-deprotonation pathway, where the Pivalate is behaving as either an intramolecular base from the palladium metal or through an intermolecular deprosation.

Journal ArticleDOI
TL;DR: New probes based on bis(indolyl)methane derivatives only sense Cu2+ among other heavy and transition metal (HTM) ions through two different channels: the colourless to orange or purple colour change, that is visible to the naked eye, and a remarkable enhancement of the fluorescence along with a large red-shift in emission, in a water containing medium (CH3CN/H2O) as discussed by the authors.

Journal ArticleDOI
TL;DR: A fluorogenic reaction using anthracene azides as starting materials produces a strongly fluorescent triazole product with high quantum yields and can be used in the synthesis and screening of fluorescent dyes combinatorially.

Journal ArticleDOI
TL;DR: In this article, a new N-(pyrenylmethyl)naphtho-azacrown-5 (1) was synthesized as an On-Off fluorescent chemosensor for Cu2+.

Journal ArticleDOI
TL;DR: In this article, aryl substituted ketones, cyclic ketones and 1,3-diketones were halogenated with N -halosuccinimides under solvent-free reaction conditions (SFRC) at various temperatures (20 −80 °C), whereas less enolized ketones required the presence of an acid catalyst.

Journal ArticleDOI
TL;DR: In this paper, a three-component reaction of an amine, an aldehyde or a ketone and a dialkyl phosphite (Kabachnik-Fields reaction) took place in one-pot, under solvent-free conditions to afford the corresponding α-aminophosphonates in high yields and short times.

Journal ArticleDOI
TL;DR: In this article, a variety of functionalized (hetero)aryl bromides, bearing either electron-withdrawing or electron-releasing substituents, can be employed for direct arylations of pyridine, oxazoline, pyrazole, or ketimine derivatives as pronucleophiles.

Journal ArticleDOI
TL;DR: The emergence of the mechanical bond during the past 25 years is giving chemistry a fillip in more ways than one as discussed by the authors, and it is providing a new lease of life to chemical synthesis where mechanical bond formation occurs as a consequence of the all-important templation orchestrated by molecular recognition and self-assembly.