Results 21 to 30 of about 5,810 (254)
An epitome of K Venkataraman's chemistry [PDF]
, 2004 Some of the significant contributions of Krishnaswami Venkataraman's to the chem. of flavones and other natural products and dyes are presented. The initiative taken by Venkataraman for research and the support to establish dyestuff industry that found ...
Nagendrappa, G.
core +2 more sources
Carboxylation of hydroxyarens with metal alkyl carbonates
Green Processing and Synthesis, 2015 The objective of this work was to investigate the possibility of using alkali metal salts of ethylcarbonic acid as a carboxylating reagent in phenol (naphthols) carboxylation and developing a new and simple method for the synthesis of hydroxybenzoic and ...
Suerbaev Khakim A. +2 more
doaj +1 more source
Selenium-Mediated Synthesis of Tetrasubstituted Naphthalenes through Rearrangement
Molecules, 2015 New β-keto ester substituted stilbene derivatives have been synthesized and cyclized with selenium electrophiles in the presence of Lewis acids. This now allows access to 1,2,3,4-tetrasubstituted naphthalene derivatives as cyclization and rearrangement ...
James Tancock, Thomas Wirth
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Efficient Dihydroxylation of Naphthalene on Photoirradiated Rutile TiO2 Powder in Solution Containing Hydrogen Peroxide [PDF]
, 2000 We report on enhanced dihydroxylation of naphthalene on photoirradiated TiO2 particles by addition of H2O2 to the reaction solution. The rate was enhanced by 6–40 times by the addition of H2O2, and the quantum yield reached as high as 76% for rutile TiO2
Jia Jianguang +2 more
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Naphthol Preparations in Disinfection [PDF]
the american journal of the medical sciences, 1906 n ...
openaire +1 more source
Development of Bifunctional Chiral Thioureas and Thiosquaramides in the Synthesis of Betti Bases
Molecules, 2023 Bifunctional thioureas and, for the first time, bifunctional thiosquaramides as organocatalysts were used in the asymmetric Betti reaction involving 1-, 2-naphthols and hydroxyquinoline with N-tosylimine and ketimine.
Martyna Malinowska, Anna Zawisza
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Angewandte Chemie, EarlyView.The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans +3 more
wiley +2 more sources
Molecules, 2021 A simple arylamine-catalyzed Mannich-cyclization cascade reaction was developed for facile synthesis of substituted 2H-benzo[h]chromenes. The notable feature of the process included the efficient generation of ortho-quinone methides (o-QMs) catalyzed by ...
Yueteng Zhang +5 more
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Syntheses, transformations and applications of aminonaphthol derivatives prepared via modified Mannich reactions [PDF]
, 2013 A special alteration is the three-component modi fi ed Mannich reaction (mMR), in which formaldehyde is replaced by an aromatic aldehyde, the secondary amine by ammonia, and the C e H acid by an electron-rich aromatic compound such as 1- or 2 ...
Fülöp, Ferenc, Szatmári, István
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Croatica Chemica Acta, 2015 An efficient and green synthesis of 1-amidoalkyl-2-naphthols via one-pot three-component condensation of aromatic aldehydes, acetamide and 2-naphthol in the presence of catalytic amounts of glycerosulfonic acid in glycerol as a green solvent was ...
Maryam Hajjami +2 more
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