Results 21 to 30 of about 5,721 (226)
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
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1-(Hydroxyiminomethyl)-2-naphthol [PDF]
Acta Crystallographica Section E Structure Reports Online, 2008 The title compound, C(11)H(9)NO(2), was prepared by a condens-ation reaction of 2-hydr-oxy-1-naphthaldehyde with hydroxyl-ammonium chloride in refluxing ethanol. An intra-molecular O-H⋯N hydrogen bond is observed. In the crystal structure, inter-molecular O-H⋯O and C-H⋯O hydrogen-bond inter-actions result in a two-dimensional network.
Jianfang Dong +3 more
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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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THE BETA-NAPHTHOL VS. HYDRO-NAPHTHOL CONTENTION. [PDF]
JAMA: The Journal of the American Medical Association, 1889 "Who shall decide when doctors disagree?" says the poet, with as close accordance with a general truth as reason and poetry require. Yet we shall always find, even in the case of the disagreement of doctors, criteria by which rational decision may be reached. In the first place, the opinions of individual doctors, as well as of persons not doctors, are
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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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Iridium-Catalyzed, Silyl-Directed, peri -Borylation of C−H Bonds in Fused Polycyclic Arenes and Heteroarenes [PDF]
, 2018 peri-Disubstituted naphthalenes exhibit interesting physical properties and unique chemical reactivity, due to the parallel arrangement of the bonds to the two peri-disposed substituents.
Hartwig, John F, Su, Bo
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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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Oxidation of benzoin catalyzed by oxovanadium (IV) schiff base complexes [PDF]
, 2013 BACKGROUND: The oxidative transformation of benzoin to benzil has been accomplished by the use of a wide variety of reagents or catalysts and different reaction procedures.
A McKillop +45 more
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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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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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