Showing papers in "Journal of Heterocyclic Chemistry in 2008"

TL;DR: A series of pyrimido derivatives were synthesized via the three-component reaction of an aldehyde, 6-aminopyrimidine-2,4-dione and 5,5-dimethyl-1,3-cyclohexanedione or 1,3indanedione in ionic liquid 1-n-butyl-3-methylimidazolium bromide ([bmim]Br).

TL;DR: In this article, the preparation of 3,3,6,6-tetramethyl, 9,10-diaryl and 5,5-dimethyl-1,3-cyclohexanedione in 1-n-butyl-3-methylimidazolium bromide ([bmim]Br) is described.

TL;DR: The chemistry and application of the title aldehyde and some simple derivatives thereof are reviewed in this paper, where the authors propose a simple derivative of the aldehydes, which they call simple aldeheeds.

TL;DR: In this article, a mixture of 1-(3-methylthiazolo[3,2-a]benzimidazol-2-yl)ethanone with dimethylformamide-dimethylacetal was synthesized, which exhibited a moderate effect against some bacterial and fungal species.

TL;DR: In this paper, a typical synthesis of meso-tetraphenylporphyrin was carried out from condensation of pyrrole with benzaldehyde in acidic medium under microwave irradiation.

TL;DR: In this paper, TsOH/graphite and N,N-dimethylaniline graphite were found to be catalyst systems for condensation reaction of o-phenylendiamine with different aldehydes to form benzimidazole derivatives under mild and simple conditions.

TL;DR: In this article, the solvent-free synthesis of 5-methyl-7-aryl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylic esters was performed and effectively catalyzed by sulfamic acid.

TL;DR: In this paper, a new, facile, efficient, "green" and chemoselective procedure for the synthesis of indole derivatives has been developed with pulverization-activation method catalyzed by Bi(NO3)3·5H2O (PAMC-Bi(NO 3)3 ·5H 2O) through grinding of indoles with aldehydes or Michael acceptors.

TL;DR: In this paper, the role of stannous chloride is acting as both reductive agent and catalyst in the synthesis of quinoxaline derivatives, which has the advantages of accessible starting materials, convenient manipulation, short reaction time and high yields.

TL;DR: In this paper, the synthesis and characterisation of a series of novel 4-acylamino and 4-alkylamino-N-1,8-naphthalimides is described.

TL;DR: In this paper, Nal was used as an efficient catalyst under microwave irradiation in short reaction times (5-10 mins) and the structure of the regioisomeric product was confirmed by X-ray analysis.

TL;DR: In this paper, the regioselective synthesis of 3 and 5-substituted isoxazoles from β-dimethyl-aminovinyl ketones was reported.

TL;DR: In this paper, a review article includes a recent development in the chemistry of 4-thiazolidinones, including structure, basicity, synthetic aspects, reactions, and applications.

TL;DR: In this article, a series of novel methylene-bis-thiazolidinone derivatives was prepared by condensation of 5-(3-formyl-4-methoxybenzyl)-2-mETHObenzaldehyde 3 with mercapto acids and primary aromatic amines 4 in presence of ZnCl2 under both microwave irradiation and conventional heating conditions.

TL;DR: In this article, a simple and useful procedure for the synthesis of azirines containing aldehyde functionality from open chain bromo/chloro-aldehydes at room temperature is reported.

TL;DR: In this paper, the title compound 2 was derived from the reaction of benzyl cyanide with triethylorthoformate and piperidine in DMF solution to yield the title compounds 2.

TL;DR: An environmentally benign Biginelli protocol for the one-pot synthesis of substituted 3,4-dihydropyrimidin-2(1H)-ones using polystyrene supported aluminium chloride as catalyst has been achieved as mentioned in this paper.

TL;DR: A one-pot procedure for the synthesis of 4-arylidene-2-phenyl-5(4H)oxazolones directly from aryl aldehyde bisulfite adducts in the absence of Ac2O in good to excellent yields using phosphoryl chloride is reported.

TL;DR: In this article, the aza-Wittig reaction of 1-Aryl-3-(2-ethoxycarbonylphenyl)carbo-diimides with primary diamines was characterized and its structure was determined by X-ray crystallography.

TL;DR: In this article, the reactions between oligoethylene glycol diglycidyl ethers 2a-c with both 7-hydrox-4-methyl-2H-chromen-2-one and 4-hydroxy-2.1.

TL;DR: An efficient one-pot synthesis of 2-substituted benzimidazoles from o-phenylenediamine and aldehydes in the presence of sulfonic acid functionalized silica at room temperature is reported in this paper.

TL;DR: In this paper, 3-aroyl-4-(5-methyl-1-phenyl-1H-pyrazol-4-yl)-3-(N,N-dimethylamino)-2-propen-1one.

TL;DR: In this article, the main strategies for the synthesis of N-pivot lariat ethers as well as their specific syntheses are discussed and a review of their specific synthesis strategies is presented.

TL;DR: A series of twelve substituted 2-phenylquinoline-4-carboxylic acids analogous to antimalarial and antileishmanial natural products was developed via the Dobner reaction employing microwave irradiation and evaluated in vitro against the parasites responsible for malaria, leishmaniasis and trypanosomiasis diseases.

TL;DR: In this paper, a solvent-free N-Alkylation of imides and alkylhalides under PT catalysts under solvent free conditions has been developed, where the reaction occurs in the presence of K2CO3 and in many cases it takes place spontaneously.

TL;DR: In this paper, the synthesis and antituberculosis activity of α-[5]-amino-1,3,4-thiadiazol-2-yl)-imidazol 2-ylthio]acetic acids (5a,b) was described.

TL;DR: An efficient two respectively three steps procedure for the synthesis of cycloalkyl[b]thieno[3,2-e]-pyridine amines was developed and good to very good yields were obtained as mentioned in this paper.

TL;DR: In this article, a series of novel methylene-bis-pyrimidinyl-spiro-4thiazolidinones 6a-h have been synthesized by cyclocondensation of thioglycolic acid with methylene-(N-cyclohexylidene-N-Pyrimidine) 5a-H, which in turn have been prepared by the reaction of cyclohexanone with methylENE-bis 2-aminopyrimidines 4a-

TL;DR: In this paper, 2-cyano-3-phenyl-2-pentenedinitrile with phenylisothiocyanate gave a tricyano-thiole derivative which on treatment with hydrazonoyl chlorides and 1-(benzothiazol-2]-2-yl)-2-bromoethanone furnished 1,3,4thiadiazole and thiazole derivatives, respectively.

TL;DR: Aryl amination of cyanuric chloride with aromatic amines, including nitroanilines, was studied in this article, where the aniline residues were attached in a controlled way to obtain symmetrical and unsymmetrical 1,3,5-triazine derivatives, respectively.