Category: 4741-62-2

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On the Chemistry of Binding Sites, VI On the Suitability of Various Aldehydes and Ketones as Binding Sites for Monoalcohols

Suitable binding sites in the chemoselective affinity chromatography should posses a favourable state and a very fast adjustment of the equilibrium with substrates.Aldehydes and ketones of various structure (1-16), from which 3-7 and 10 were prepared for the first time, were investigated for their suitibility to bind monoalcohols via a covalent acetal bond.Especially advantageous were cyclic hemiacetals which showed on acidic catalysis with monoalcohols a fast and reversible formation of acetals.Out of these 1,3-dihydro-1-isobenzofuranol (1a), 1,3-dihydro-7-methoxy-1-isobenzofuranol (5a), and 2H-chromen-2-ol (10) with very fast kinetics seemed to be especially suitable.Acetals of different alcohols were prepared as well and their hydrolytic behaviour was studied.For the preparation of corresponding polymers the polymerizable derivative 20 was synthesized.

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Benzofuran – Wikipedia,
Benzofuran | C8H2276O – PubChem

Synthetic Route of 4741-62-2, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 4741-62-2, 5-Methoxyisobenzofuran-1(3H)-one, introducing its new discovery.

Transpositive Tandem Annulation of Phthalides with Allene Carboxylates: Regioselective Synthesis of Arylnaphthalene Lignans

Allene carboxylates, scarcely used as Michael acceptors, serve as acceptors in the annulation with phthalides in the presence of LDA and provide a one-pot synthesis of naphtho[c]furanones in very good yields. This tandem annulation is proposed to proceed via transposition of the hydroxy group resulting from the initial annulation.

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Benzofuran – Wikipedia,
Benzofuran | C8H2267O – PubChem

4741-62-2, Name is 5-Methoxyisobenzofuran-1(3H)-one, belongs to benzofuran compound, is a common compound. Computed Properties of C9H8O3In an article, once mentioned the new application about 4741-62-2.

Synthesis, characterization and phytotoxic activity of hydroxylated isobenzofuran-1(3H)-ones

Two hydroxylated isobenzofuranones 3 and 4 were synthesized from benzoic acids. The compounds were fully characterized by IR, NMR (1H and 13C), HRMS, and X-ray crystallography. Compounds 3 and 4 crystallized in the space group Pc and P21/n, respectively. DFT calculations were used to confirm undoubtedly their NMR chemical shifts. Biological assays showed that these compounds are capable of interfering with the radicle growth of monocotyledonous and dicotyledonous species, whereas the photosynthetic electron transport chain was substantially unaffected.

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Benzofuran – Wikipedia,
Benzofuran | C8H2273O – PubChem

Synthetic Route of 4741-62-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.4741-62-2, Name is 5-Methoxyisobenzofuran-1(3H)-one, molecular formula is C9H8O3. In a Article£¬once mentioned of 4741-62-2

Synthesis of 1,2-phenylenedimethanols by base-promoted reduction of isobenzofuran-1(3H)-ones with silane

An efficient method for preparation of substituted 1,2-phenylenedimethanols and aliphatic 1,4-diols that are valuable intermediates in organic synthesis, has been developed by the base-promoted reduction of isobenzofuran-1(3H)-ones and gamma-lactones with silane under mild conditions. Compared with traditional procedures using stoichiometric amounts of metal hydrides and alkyl reductants, the present method avoids the use of sensitive reagents and is operationally simple and a broad variety of functional groups are tolerated.

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Benzofuran – Wikipedia,
Benzofuran | C8H2264O – PubChem

Chemistry is traditionally divided into organic and inorganic chemistry. Recommanded Product: 5-Methoxyisobenzofuran-1(3H)-one, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 4741-62-2

Synthesis of Aromatic Carbonyl Compounds via Thallation-Carbonylation of Arenes

Simple arenes, substituted benzylic and beta-phenylethyl alcohols, benzoic acid, phenylacetic acid, benzamide, acetanilide, phenylurea, and benzophenone have been thallated under variety of reaction conditions with thallium(III) trifluoroacetate and subsequently carbonylated with 19percent PdCl2, 2 equiv of LiCl, and MgO in either methanol or tetrahydrofuran under 1 atm of carbon monoxide to give aromatic esters, substituted phthalides and 3,4-dihydroisocoumarins, phthalic and homophthalic anhydride, phthalimide, and the ortho-substituted methyl esters of acetanilide, phenylurea, and benzophenone, respectively.The scope and limitations of this approach to aromatic carbonyl compounds are examined.

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Benzofuran – Wikipedia,
Benzofuran | C8H2262O – PubChem

Application of 4741-62-2, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.4741-62-2, Name is 5-Methoxyisobenzofuran-1(3H)-one, molecular formula is C9H8O3. In a article£¬once mentioned of 4741-62-2

Site-Selective Functionalization of (sp3)C?H Bonds Catalyzed by Artificial Metalloenzymes Containing an Iridium-Porphyrin Cofactor

The selective functionalization of one C?H bond over others in nearly identical steric and electronic environments can facilitate the construction of complex molecules. We report site-selective functionalizations of C?H bonds, differentiated solely by remote substituents, catalyzed by artificial metalloenzymes (ArMs) that are generated from the combination of an evolvable P450 scaffold and an iridium-porphyrin cofactor. The generated systems catalyze the insertion of carbenes into the C?H bonds of a range of phthalan derivatives containing substituents that render the two methylene positions in each phthalan inequivalent. These reactions occur with site-selectivity ratios of up to 17.8:1 and, in most cases, with pairs of enzyme mutants that preferentially form each of the two constitutional isomers. This study demonstrates the potential of abiotic reactions catalyzed by metalloenzymes to functionalize C?H bonds with site selectivity that is difficult to achieve with small-molecule catalysts.

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Benzofuran – Wikipedia,
Benzofuran | C8H2260O – PubChem

Synthetic Route of 4741-62-2, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 4741-62-2, Name is 5-Methoxyisobenzofuran-1(3H)-one, molecular formula is C9H8O3. In a Patent£¬once mentioned of 4741-62-2

A substituted phthalide compound preparation method and its intermediate (by machine translation)

The invention discloses a method for preparing substituted phthalide compounds and intermediates thereof. The invention substituted phthalide compound preparation method comprises the following steps: in water, under acidic conditions, the compound B to cyclization reaction, compound A can be obtained. The process is simple, low cost, less wastes, it is suitable for industrial production. (by machine translation)

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Benzofuran – Wikipedia,
Benzofuran | C8H2252O – PubChem

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 4741-62-2, name is 5-Methoxyisobenzofuran-1(3H)-one, introducing its new discovery. Computed Properties of C9H8O3

Dehydrogenative lactonization of diols in aqueous media catalyzed by a water-soluble iridium complex bearing a functional bipyridine ligand

A new catalytic system for the dehydrogenative lactonization of a variety of benzylic and aliphatic diols in aqueous media was developed. By using a water-soluble, dicationic iridium catalyst bearing 6,6?-dihydroxy-2, 2?-bipyridine as a functional ligand, highly atom economical and environmentally benign synthesis of various lactones was achieved in good to excellent yields. Recovery and reuse of the catalyst were also accomplished by a simple phase separation and the recovered catalyst maintained its high activity at least until the fifth run. Copyright

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Reference£º
Benzofuran – Wikipedia,
Benzofuran | C8H2259O – PubChem

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. Recommanded Product: 5-Methoxyisobenzofuran-1(3H)-one. Introducing a new discovery about 4741-62-2, Name is 5-Methoxyisobenzofuran-1(3H)-one

Palladium (II)-Catalyzed Decarboxylative Cross-Dehydrogenative Coupling: Direct Synthesis of meta-Substituted Biaryls from Aromatic Acids

A palladium-catalyzed tandem process of simple aromatic acids has been achieved to afford meta-substituted biaryls in moderate to good yields. The reaction proceeds via carboxyl-directed intermolecular cross-dehydrogenative coupling and subsequent decarboxylation. The new C?C bonds in this transformation are formed in the ortho position of carboxyl and the reaction tolerates electron-rich acids. Both symmetrical and unsymmetrical meta-substituted biaryls can be directly synthesized via this method. (Figure presented.).

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Benzofuran – Wikipedia,
Benzofuran | C8H2270O – PubChem

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Highly enantioselective synthesis of 2,3-dihydro-1 H-imidazo[2,1-a isoindol-5(9b H)-ones via catalytic asymmetric intramolecular cascade imidization-nucleophilic addition-lactamization

Highly enantioselective catalytic asymmetric intramolecular cascade imidization-nucleophilic addition-lactamization of N1-alkylethane-1,2-diamine with methyl 2-formylbenzoate catalyzed by a chiral phosphoric acid represents the first efficient method for the preparation of medicinally interesting chiral 2,3-dihydro-1H-imidazo[2,1-a]isoindol-5(9bH)-ones with high yields and excellent enantioselectivities. This strategy has been shown to be quite general toward various methyl 2-formylbenzoates.

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Reference£º
Benzofuran – Wikipedia,
Benzofuran | C8H2261O – PubChem