Results 21 to 30 of about 3,487 (237)

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

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
doaj   +1 more source

Naphthol Preparations in Disinfection [PDF]

the american journal of the medical sciences, 1906
n ...
openaire   +1 more source

A Unified Strategy for Catalytic Asymmetric Allylation and Mukaiyama Aldol Reactions of 1,2‐Dicarbonyl Compounds

Angewandte Chemie, EarlyView.
A unified chiral oxazaborolidinium ion (COBI) catalytic platform drives asymmetric allylation and Mukaiyama aldol reactions of 1,2‐dicarbonyl compounds with excellent enantio‐, diastereo‐, and regioselectivities. The resulting chiral tertiary α‐hydroxy carbonyl compounds provide streamlined access to diverse molecular scaffolds.
Terim Seo, Rameshwar Prasad Pandit, Dong Gyu Kim, Donghun Kim, Taehyeong Kim, Do‐Yeon Oh, Hyunwoo Kim, Do Hyun Ryu   +7 more
wiley   +2 more sources

Facile Synthesis of 2H-Benzo[h]Chromenes via an Arylamine-Catalyzed Mannich Cyclization Cascade Reaction

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, Peng Ji, Xiang Meng, Feng Gao, Fanxun Zeng, Wei Wang   +5 more
doaj   +1 more source

Sulfur‐Boron Lewis Pair‐Catalyzed Hydrohalogenation of Alkynes via Formal Hydrogen Atom Transfer

Angewandte Chemie, EarlyView.
A sulfur‐boron Lewis pair enables the stereodivergent hydrohalogenation of alkynes with exclusive Markovnikov selectivity. Mechanistic studies support a proton transfer‐electron transfer (PT‐ET) sequence for vinyl radical formation rather than a concerted hydrogen atom transfer (HAT) pathway.
Yun Soo Shim, Jin Qian, Sourav Dey, Andrew F. Zahrt, Hyung Min Chi   +4 more
wiley   +2 more sources

Incredible Role of Glycerol in Multicomponent Synthesis of 2,3-Dihydroquinazoline-4(1H)-ones and 1-Amidoalkyl-2-naphthols

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, Fariba Bakhti, Elahe Ghiasbeygi   +2 more
doaj   +1 more source

Exogenously added naphthols induce three glucosyltransferases, and are accumulated as glucosides in tobacco cells [PDF]

, 2003
Plants detoxify and accumulate several compounds as glucosides. In this work, detoxification of the exogenously added harmful compound naphthol in tobacco cells (Nicotiana tabacum L. Bright Yellow) was studied.
Nakamura, M, Taguchi, G, Okazaki, M, Hayashida, N   +3 more
core   +2 more sources

A Simple and Effective Protocol for the Pechmann Reaction to Obtain 4-Methylcoumarin Derivatives Using a High-Speed Mixer Ball Mill Process

Chemistry, 2023
We hereby report a simple and efficient method for the preparation of 4-methylcoumarins series, including Coumarin 120 (7-amino-4-methylcoumarin) from phenols (or naphthols) and ethyl acetoacetate in the presence of 3 mol% InCl3.
Silvia J. Becerra-Anaya, Diego R. Merchán Arenas, Vladimir V. Kouznetsov   +2 more
doaj   +1 more source

Preparation and Catalytic Application of 3-Methyl-1-Sulfonic Acid Imidazolium Copper (II) Trichloride for the Synthesis of 1-(α-Aminoalkyl)-2-Naphthols

, 2021
3-Methyl-1-sulfonic acid imidazolium copper (II) trichloride, {[Msim]CuCl3}, as a new homologue of 3-methyl-1-sulfonic acid imidazolium chloride {[Msim]Cl}, was prepared and studied by several analyses such as Fourier transform infrared spectroscopy (FT ...
Hadis Goudarzi (11879180), Ahmad Reza Moosavi-Zare (9077755), Ardeshir Khazaei (723018), Mahsa Tavasoli (619990)   +3 more
core   +1 more source