Category: 791616-63-2

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. 791616-63-2, Name is (11bR)-4-Hydroxy-2,6-bis(2,4,6-triisopropylphenyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide, molecular formula is C50H57O4P. In a Article£¬once mentioned of 791616-63-2, name: (11bR)-4-Hydroxy-2,6-bis(2,4,6-triisopropylphenyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide

A Simple Synthesis of 3-Methoxyphthalic Anhydride

A simple and convenient synthesis of 3-methoxyphthalic anhydride by a two-step synthesis involving Diels-Alder reaction of 2-methoxyfuran with maleic anhydride is reported.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.name: (11bR)-4-Hydroxy-2,6-bis(2,4,6-triisopropylphenyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 791616-63-2, in my other articles.

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Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 791616-63-2, Name is (11bR)-4-Hydroxy-2,6-bis(2,4,6-triisopropylphenyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide, Computed Properties of C50H57O4P.

An Investigation of the Wittig Reaction between a Series of Monosubstituted Phthalic Anhydrides and Ethoxycarbonylmethylidenetriphenylphosphorane

The title reaction has been investigated using a range of phthalic anhydrides substituted at the 3- or 4-positions with electronically dissimilar functional groups.The structures of the 3-ethoxycarbonylmethylidenephthalides formed in these reactions have been determined by both chemical and spectroscopic means.The regioselectivity of attack by the phosphorane on an unsymmetrical phthalic anhydride appears to be largely dependent upon the electronic effects of the substituent which render one of the anhydride carbonyls relatively more or less susceptible to nucleophilic attack.In general, (E)-ylidenephthalides are formed predominantly.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Computed Properties of C50H57O4P. In my other articles, you can also check out more blogs about 791616-63-2

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Aminonaphthacene derivatives

9-Aminonaphthacene derivative having the formula: STR1 wherein R1 and R2 are both hydrogen atoms or either one of them is a hydrogen atom and the other is hydroxy group or methoxy group; R3 is acetyl group or 1-hydroxyethyl group; R4 is a hydrogen atom; R5 is a hydrogen atom, hydroxy group, lower alkanoyloxy group, amino group, halogen-substituted lower alkanoylamino group or morpholino group; R6 is a hydrogen atom, hydroxy group, lower alkanoyloxy group or tetrahydropyranyloxy group; R7 is a hydrogen atom or methyl group; R is a hydrogen atom; and n is zero or one, which is useful as anti-cancer chemical agents with lower toxicity and with little local irritation and is able to orally be applied.

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Substituted phenethylsulfones and method of reducing TNFalpha levels

Phenethylsulfones substituted in the position alpha to the phenyl group with a 1-oxoisoindoline or 1,3-dioxoisoindoline group reduce the levels of TNFalpha in a mammal. Typical embodiments are 2-[1-(3-ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-4-aminoisoindoline-1,3-dione and 2-[1-(3-cyclopentyloxy-4-methoxyphenyl)-2-methylsulfonylethyl]isoindoline-1,3-dione.

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Related Products of 791616-63-2. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 791616-63-2, Name is (11bR)-4-Hydroxy-2,6-bis(2,4,6-triisopropylphenyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide. In a document type is Article, introducing its new discovery.

17O NUCLEAR MAGNETIC RESONANCE SPECTROSCOPIC STUDY OF SUBSTITUTED PHTHALIC ANHYDRIDES AND PHTHALIDES

17O chemical shift data (natural abundance) for 3-substituted phthalic anhydrides and 4- and 7-substituted phthalides in acetonitrile at 75 deg C are reported.Steric interactions of substituents ortho to the carbonyl groups result in deshielding effects (9-22 ppm) relative to parent compounds regardless of the electronic character of the substituents.Factors contributing to the deshielding effects are discussed.The relationship between 17O chemical shifts and regiochemistry of the phthalic anhydrides is discussed.

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On the regioselectivity of the condensation of stabilized phosphoylids with 3-substituted phthalic anhydrides

Condensations of stabilized phosphorane 1 with 3-substituted phthalic anhydrides were investigated.The importance of various effects influencing regio- and stereoselectivity of these reactions is discussed.It is proposed that the oxygen atom on the substituents in position 3 can act as a Lewis base toward the electron-deficient phosphorus of the ylid.The resulting complexation stabilizes the transition state for the reacction at the ortho carbonyl group, thus offsetting the usual steric and “push” effects, wich favour attack at the meta carbonyl function. – Key words: Wittig condensations, phthalic anhydrides, regioselectivity, stereoselectivity.

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Regioselective Addition of Grignard Reagents to 3-Methoxy- and 3-Nitrophthalic Anhydride

The regioselectivity in the addition of the grignard reagents 5a and 6a to the anhydrides 1 and 2 is determined by the solvent system: in a highly selective manner (3:97), the meta carbonyl group is attacked in tetrahydrofuran/tetramethylethylenediamine, while predominant, but relatively unselective (maximum 78:22) addition to the ortho carbonyl group is observed in diethyl ether.The influence of the solvent system on the regioselectivity is discussed.The LUMO-coefficients of the carbonyl carbon atoms in 1 and 2 were calculated.

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7-(4,6-dimethoxypyrimidinyl)oxy- and -thiophthalides as novel herbicides: Part 1. CGA 279 233: A new grass-killer for rice

A series of novel types of 7-(4,6-dimethoxypyrimidin-2-yl)oxy – and -thio-3-methyl-1 (3H)-isobenzofuranones were discovered at Dr R Maag AG. From the thio-isobenzofuranyl series, CGA 279 233 – BSI-proposed common name pyriftalid – was chosen for further development as a grass herbicide for use in rice. General synthetic approaches to these new phthalic acid-derived compounds are given, with emphasis on the synthesis of pyriftalid and its physico-chemical behaviour.

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Application of 791616-63-2. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 791616-63-2, Name is (11bR)-4-Hydroxy-2,6-bis(2,4,6-triisopropylphenyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide

OXOINDOLINE DERIVATIVES AS PROTEIN FUNCTION MODULATORS

The present invention provides chimeric compounds of formula (II) that modulate protein function, to restore protein homeostasis, including cytokine, aiolos, and/or ikaros activity, TNF-alpha activity, CKl-alpha activity and cell-cell adhesion. The invention provides methods of modulating protein-mediated diseases, such as cytokine-mediated diseases, disorders, conditions, or responses. Compositions, including in combination with other cytokine and inflammatory mediators, are provided. Methods of treatment, amelioration, or prevention of protein-mediated diseases, disorders, and conditions, such as cytokine-mediated diseases, disorders, and conditions, including inflammation, fibromyalgia, rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, psoriasis, psoriatic arthritis, inflammatory bowel diseases, Crohn’s disease, ulcerative colitis, uveitis, inflammatory lung diseases, chronic obstructive pulmonary disease, Alzheimer’s disease, organ transplant rejection, and cancer, are provided.

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Synthesis of phosphonate 3-phthalidyl esters as prodrugs for potential intracellular delivery of phosphonates

A new prodrug approach for intracellular delivery of phosphonates was developed via the synthesis of 3-phthalidyl esters of 1- naphthalenemethylphosphonate. This approach is advantageous over the traditional acyloxymethyl phosphonate prodrugs, because these prodrugs do not generate formaldehyde and have improved plasma half-lives.

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