26452-81-3Relevant articles and documents
PYRIMIDINONE COMPOUND
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Paragraph 0605, (2017/11/10)
A pyrimidinone compound represented by formula (1): wherein: A1 represents a nitrogen atom or a CR4; A2 represents a nitrogen atom and A3 represents a CR3b, or A2 represents a CR3a and A3 represents a nitrogen atom; Q represents an oxygen atom or a sulfur atom; G represents a C2-C10 chain hydrocarbon group having one or more halogen atoms, etc.; R1 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms; R2 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, etc.; R4 represents a hydrogen atom, etc.; R3, R3a, and R3b represent independently of each other a hydrogen atom, etc.; n represents 0, 1, or 2; and p represents 0, 1, 2, or 3 has an excellent efficacy for controlling harmful arthropods.
Electron-deficient heteroarenium salts: An organocatalytic tool for activation of hydrogen peroxide in oxidations
?turala, Ji?í,Bohá?ová, Soňa,Chudoba, Josef,Metelková, Radka,Cibulka, Radek
, p. 2676 - 2699 (2015/03/18)
A series of monosubstituted pyrimidinium and pyrazinium triflates and 3,5-disubstituted pyridinium triflates were prepared and tested as simple catalysts of oxidations with hydrogen peroxide, using sulfoxidation as a model reaction. Their catalytic efficiency strongly depends on the type of substituent and is remarkable for derivatives with an electron-withdrawing group, showing reactivity comparable to that of flavinium salts which are the prominent organocatalysts for oxygenations. Because of their high stability and good accessibility, 4-(trifluoromethyl)pyrimidinium and 3,5-dinitropyridinium triflates are the catalysts of choice and were shown to catalyze oxidation of aliphatic and aromatic sulfides to sulfoxides, giving quantitative conversions, high preparative yields and excellent chemoselectivity. The high efficiency of electron-poor heteroarenium salts is rationalized by their ability to readily form adducts with nucleophiles, as documented by low pKR+ values (pKR+ red > -0.5 V). Hydrogen peroxide adducts formed in situ during catalytic oxidation act as substrate oxidizing agents. The Gibbs free energies of oxygen transfer from these heterocyclic hydroperoxides to thioanisole, obtained by calculations at the B3LYP/6-311++g(d,p) level, showed that they are much stronger oxidizing agents than alkyl hydroperoxides and in some cases are almost comparable to derivatives of flavin hydroperoxide acting as oxidizing agents in monooxygenases.
AROMATIC RING COMPOUND
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Paragraph 0275; 0276, (2015/01/18)
Provided is an aromatic ring compound having a GPR40 agonist activity. A compound represented by the formula (I): wherein each symbol is as described in the DESCRIPTION, or a salt thereof has a GPR40 agonist activity, and is useful as an agent for the prophylaxis or treatment of diabetes and the like.