Showing papers in "Organic Preparations and Procedures International in 2004"

TL;DR: In this paper, the authors present a review of recent developments in the history of theYDANTOIN CHEMISTRY, focusing on the use of chemical compounds in the production of synthetic drugs.

TL;DR: The preparation of TETRAMETHYLPIPERDINE-1-OXOAMMONlUM SALTS and their use as oxidanants in ORGANIC CHEMISTRY is described in this article.

TL;DR: In this article, the authors present recent advances in the CHEMISTRY of TRICHLOROMETHyl CHLOROFORMATE and bis-(TRICHLoromETHyl) CARBONATE.

TL;DR: In this article, the authors describe the reactivation of TETRONIC ACIDS in the context of base-promoted Dieckman cyclization and cyclization of y-Hydroxylated or y-Halogenated P-Ketoester.

TL;DR: DIBENZOZo et al. as discussed by the authors proposed a method for organic preparation and procedures, which can be found in OXEPINES: SYNTHESES AND APPLICATIONS.

TL;DR: In this article, the development of new synthetic methods leading to fused tri-and tetracyclic heterocycles, many of which have interesting biological activity such as antiviral and DNA intercalating properties, was discussed.

TL;DR: A Practical Synthesis of ETHYL L-GLUTAMINE (L-Theanine) Organic Preparations and Procedures International: Vol. 36, No. 2, pp. 182-185.

TL;DR: In this article, VILSMEIER-HAACK SYNTHESIS of AROMATIC ALDEHYDES USING bis-(TRICHLOROMETHYL) CARBONATE and DIMETHYLFORMAMIDE.

TL;DR: The most common method of synthesizing 5-aminopyrazoles involves the condensation of P-ketonitriles (2) with hydrazines (1) under a variety of conditions as mentioned in this paper.

TL;DR: In this paper, the authors present a review of the MolYBDENUM in ORGANIC SYNTHESIS and its application in the field of organic preparation and procedures.

TL;DR: In this paper, a nucleophilic substitution of an allylic alkoxide on 2-fluoro-lnitrobenzene has been proposed for a variety of akyl nitroaromatic ethers.

TL;DR: In this paper, it has been demonstrated that application of microwave irradiation (MWI) to organic reactions not only results in reduced reaction times but also in improved yield compared to those obtained under conventional conditions.

TL;DR: A novel and an efficient procedure for preparation of 4-amino-l,l,3,3-tetrasubstituted guanidines in solution under very mild conditions, which involves the use of chloroformamidinium salts and the chloroimidazolidinium salt.

TL;DR: Mammals have several enzyme systems for the detoxification of cyanide, a militarylcivilian threat agent of contemporary concern, viz., rhodanase and p-mercaptopyruvate sulfurtransferase, both enzymes catalyzing the conversion of cyanides to the non-toxic thiocyanate, the latter being excreted in the urine.

TL;DR: In this paper, a comparison of the HYDROGENATION OF INTERMEDIATE (IRA) with direct reduction of the number of intermediates is presented, showing that the latter is more efficient than the former.

TL;DR: In this paper, it was shown that 6 and 7-hydroxy flavones can be synthesized by sodium hydroxide-catalyzed cyclization of the corresponding 1,3-diketone in water.

TL;DR: A FACILE one-pot preparation of isothiocyanates from N-formamides and sulfur powder with bis(TRICHLOROMETHyl) CARBONATE is described in this article.

TL;DR: In this article, an expEDITIOUS, PRACTICAL LARGE SCALE SYNTHESIS of 4-AMINO-2-CHLORO-6,7-DIMETHOXYQUINAZOLINAZolinazoline.

TL;DR: In this paper, a new route for 3-aminofurazan4carboxylic acid (2) was discovered, which was used for the synthesis of bioactive amides.

TL;DR: In this paper, the authors present a detailed and direct synthesis of the ledendonate from the pyrolidone from PYRROLIDONE, and present a methodology for its use in organic preparation.

TL;DR: In this paper, the authors describe the reaction of the williamson reaction in IONIC LIQUIDS to an ionic jellyfish attack, and present a detailed discussion of the event.

TL;DR: In this article, the authors present a list of Tetrahedron Lett., 43, 1373 (2002) and E. Heldin, K. Linder, C. Pettersson, W. Szewczyk, L. Schreiber, J. Repic and T. Waykole.

TL;DR: In this article, the authors present an efficient synthysis of IMIDAZO using a HYPERVALENT IODINE (III) sULFONATE.

TL;DR: In this article, a synthesis of the title compounds was envisaged from the condensation of methyl 4amino1 -methyl-3-n-propyl pyrazole-5-carboxylate (1) with triethyl orthoformate (TEOF) in the presence of aromatic amines.

TL;DR: In this paper, an N-(3-butenyl)-N-(2-nitrophenyl) amide derivatives were used as precursors for a new synthesis of 2,3,4,5,tetrahydrolH-l,5-benzodiazepines.

TL;DR: In this article, an efficient one-step conversion of 3-FORMYLCHROMONES into 3-CYANOCHEMONES is described. But the conversion process is not described.

TL;DR: The benzyl functionality is a useful protecting group for the phenolic hydroxyl group in organic synthesis as discussed by the authors, and it has been shown that benzyl ethers are stable under basic or mildly acidic conditions but readily cleaved by hydrogenolysis.

TL;DR: In this paper, an efficient route to quinazolines bearing different substituents, such as nbutoxyand diethylaminoethoxy groups at the 6and 7-positions of the Quinazoline ring (Scheme I), is presented.

TL;DR: In this paper, the authors present an efficient synthysis of 2,3-DICYANOINDOLE for organic preparation and procedures, and present a methodology for its implementation.