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Use of the Redox Properties of Hydrazine in the Synthesis of Organochalcogen Compounds (A Review)
AbstractThe review describes the possibilities of the synthesis of organochalcogen compounds of different classes using elemental chalcogens or...
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Addition of pyrazoles to α,β-acetylenic aryl(hetaryl) ketones in solid Al2O3: synthesis of 3-pyrazolylenones and 3,3-dipyrazolylpropanones
Mild one-pot synthesis of 3-pyrazolylenones and 3,3-dipyrazolylpropanones in the yields of 18–33% and 34–57%, respectively, by addition of pyrazoles...
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Highly regioselective one-step synthesis of 1-benzyl-5-formyl-1,2,3-triazole-4-carboxylates
A novel methodology has been developed to afford 1,4,5-trisubstituted 1-benzyl-5-formyl-1,2,3-triazole-4-carboxylates in one step under mild...
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A novel series of (E)-S and (E)-N,S-polyhalonitrobutadiene analogues: design and evaluation of antibacterial and antifungicidial activity
Researches with nitro compounds mainly relates to the synthesis of their derivatives used as unusual intermediate compounds. Because of their high...
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Intramolecular Cyclization During Bromination of the Quinoline Alkaloid Haplophyllidine
Bromination of the furanoquinoline alkaloid haplophyllidine by molecular bromine and N -bromosuccinimide was accompanied by intramolecular cyclization...
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Synthesis and Some Transformations of New Acetophenone Derivatives Containing a Carbamate Moiety
AbstractThe acylation of methyl phenylcarbamate, 2-(morpholin-4-yl)ethyl phenylcarbamate, and 2-(pyridin-2-yl)ethyl phenylcarbamate with acetic...
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Naturally Occurring Cyclopentadienes and Cyclopentadienyl Anions
The history of cyclopentdienyl complexes (or cyclopentadienyl salts) has been spanning already for more then 70 years and they have been always...
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Synthesis of 6-styryldihydropyrimidinones and 6-styryldihydropyridinones via the respective 6-alkylphosphonates
Trimethyl or triethyl phosphite in the Arbuzov reaction with 6-bromomethyl-3,4-dihydropyrimidin-2(1 H )-one or analogous...
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Conformational Analysis of 5-Ethyl-5-hydroxymethyl-2,2-dimethyl-1,3-dioxane
Computer simulation of conformational transformations of 5-ethyl-5-hydroxymefhyl-2,2-dimefhyl-1,3-dioxane in the gas phase, as well as in mixtures...
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A new approach to the pyrrolo[3,4-d] pyrimidine system via tandem Staudinger/aza-Wittig reaction of 5-acyl-4-azidomethyl-3,4-dihydropyrimidin-2(1H)-ones
A novel access to pyrrolo[3,4- d ]pyrimidine scaffold via tandem Staudinger/intramolecular aza-Wittig reaction of...
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[3+3] Cyclocondensation of β-carbonyl-substituted 1H-benzo[f]chromenes with 3-amino-1,2,4-triazoles: synthesis of [1,2,4]triazolo[1,5-a]pyrimidines
The reaction of β-carbonyl-substituted 1 H -benzo[ f ]chromenes with 3-amino-1,2,4-triazoles provides a new avenue for the preparation of...
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Chemoenzymatic approaches for exploring structure–activity relationship studies of bioactive natural products
Spurred by advancements in microbial genetics and enzyme engineering, chemoenzymatic strategies, which combine enzymatic and synthetic...
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Chromophores in spinning dopes of cellulose and imidazolium ionic liquids
Spinning of cellulose dissolved in 3-alkyl-1-methylimidazolium ionic liquids is a current approach to manmade cellulosic fibers. To curb cellulose...
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An Efficient Oxidative Difunctionalisation of 2-Amino-2H-chromene and Antimicrobial Activity of the Synthesized Tetrahydrochromene Derivatives
A novel series of 3-amino-2,2-dialcoxy-7,7-dimethyl-5-oxo-4-phenyl-3,4,5,6,7,8-hexahydro-2 H -chromene-3-carbonitriles are synthesized by oxidative...
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Alkoxycarbonylation of Unsaturated Substrates of Plant Origin in the Presence of Palladium Catalysts as a Route to Synthesize Ester Products
AbstractThe synthesis of esters by the alkoxycarbonylation of unsaturated substrates of plant origin opens up the possibility of switching to...
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Different Types of Reducing Agents
Following are given different types of reducing agents. As already stated, the method of choice depends on the selectivity required and also on the...
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New Coumarins of the Family Apiaceae. I. Khellactone Esters from Phlojodicarpus sibiricus
An investigation of the hexane extract of subterranean organs of Phlojodicarpus sibiricus (Fisch.) Koso-Pol. (Apiaceae) led to the isolation of 20...
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Constitutional Isomers
Constitutional isomers have the same molecular formula, but differ in the arrangement of the atoms in the respective molecule. This means that the...
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Synthesis of planar chiral ferrocenes via enantioselective remote C–H activation
Planar chiral ferrocenes are widely studied structures in asymmetric catalysis, materials science and medicinal chemistry. Although synthetic methods...
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Acid-Catalyzed Acetonation of D-Ribose
AbstractWith the goal of identifying by-products in the cyanation of an imidate donor with trimethylsilyl cyanide, the main compounds formed in the...
