Results 21 to 30 of about 3,621 (239)
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
Site‐Specific Protein Bioconjugation Through Cellular Incorporation of Noncanonical Amino Acids
Angewandte Chemie, EarlyView.Genetic code expansion (GCE) enables site‐specific installation of noncanonical amino acids containing bioorthogonal conjugation handles, allowing precise, homogeneous protein modification. This review examines the principles of orthogonal translation, surveys the chemistries available for chemoselective labeling, and highlights emerging multi‐site ...
Rahul Sarkar +2 more
wiley +2 more sources
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
doaj +1 more source
Radical, Not Ionic: The Mechanochemical Zincke Nitration of Phenols
Angewandte Chemie, EarlyView.Mechanochemistry recasts the classical Zincke nitration as an open‐shell process. Liquid‐assisted vibrational milling of phenols with in situ HNO2 delivers direct and ipso nitration across 50 substrates, while atmosphere, NOx‐transfer, EPR and DFT evidence expose a phenoxyl‐radical/NO2 manifold underlying this historically ionic transformation ...
Roberto Scipione +7 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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Frontiers in Chemistry, 2021 A Brønsted acid-catalyzed domino ring-opening cyclization transformation of donor-acceptor (D-A) cyclopropanes and 2-naphthols has been developed.
Hua Zhao +4 more
doaj +1 more source
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 +2 more
doaj +1 more source