- An Fe3O4@SiO2/Schiff base/Cu(ii) complex as an efficient recyclable magnetic nanocatalyst for selective mono: N-arylation of primary O-alkyl thiocarbamates and primary O-alkyl carbamates with aryl halides and arylboronic acids
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An efficient, convenient and novel method for the selective mono N-arylation of primary O-alkyl thiocarbamates and primary O-alkyl carbamates with aryl halides and arylboronic acids in the presence of a recyclable magnetic Cu(ii) nanocatalyst is described. A variety of mono N-arylated O-alkyl thiocarbamates and O-alkyl carbamates were prepared in good to excellent yields with a broad range of aryl coupling partners. The magnetic nanocatalyst can be easily recovered with an external magnetic field and reused at least five times without noticeable leaching or loss of its catalytic activity. This cost-effective and eco-friendly methodology has some other advantages, such as easy preparation of the catalyst, simple workup procedure, and easy purification, which makes this protocol interesting for the users in various fields of pharmacology and biotechnology systems.
- Sardarian, Ali Reza,Dindarloo Inaloo, Iman,Zangiabadi, Milad
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p. 8557 - 8565
(2019/06/14)
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- Tetrazolinone compound and application for same
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Provided is a tetrazolinone compound given by formula (1) (wherein E represents the following group E16 or the like; Y represents -O-CH2- or the like; Q represents the following group Q46 or the like; R8 represents a C1-C6 alkyl group; R3, R30, and R31 may be the same or different, and represent hydrogen atoms or the like; A represents a C6-C16 aryl group or the like, optionally having one or more atoms or groups selected from the group P1; R5 represents a C1-C3 alkyl group; and X represents an oxygen or sulfur atom), and having exceptional efficacy in controlling harmful organisms.
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Paragraph 0685; 0686; 0687; 0688; 0689
(2016/10/08)
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- TETRAZOLINONE COMPOUNDS AND ITS USE
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The present invention provides a compound having an excellent efficacy for controlling pests. A tetrazolinone compound of a formula (1): [wherein, R1 represents an C6-C16 aryl group, an C1-C12 alkyl group, a C3-C12 cycloalkyl group or an adamantyl group, etc., which each optionally be substituted; R2 represents a hydrogen atom, an C1-C12 alkyl group, or a halogen atom, etc.; R4 and R5 represent independently of each other a hydrogen atom or an C1-C3 alkyl group, etc.; R6, R7, R8 and R9 represent independently of each other a hydrogen atom, a halogen atom, an C1-C12 alkyl group, a C1-C12 haloalkyl group, an C2-C12 alkenyl group, a C3-C12 cycloalkyl group, an C1-C12 alkoxy group or a C1-C12 haloalkoxy group, etc.; X and Y represent independently of each other a sulfur atom or an oxygen atom; Q represents an oxygen atom or a sulfur atom; and R10 represents an C1-C6 alkyl group, etc.] shows an excellent controlling efficacy on pests.
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Paragraph 0464
(2013/11/18)
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- ORGANOSILICON COMPOUNDS, PRODUCTION PROCESSES THEREOF, PRESSURE-SENSITIVE ADHESIVE COMPOSITIONS CONTAINING THE ORGANOSILICON COMPOUNDS, SELF-ADHESIVE POLARIZERS AND LIQUID CRYSTAL DISPLAYS
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Organosilicon compounds are represented by the following formula: wherein R is a hydrolyzable group, R′ is an alkyl having 1 to 4 carbon atoms, A is an alkylene having 1 to 6 carbon atoms, X is O or S, Y is —NH— or S, L1 and L2 are C or N, Z and M are —NH—, O or S, R1 to R11 are H, alkyl having 1 to 6 carbon atoms, alkoxy or fluoroalkyl, or amino, m is 1 to 3, and n is 0 to 3. R1 and R2 or R2 and R3 may bonded together. R5 and R6 or R9 and R10 may directly bond together. R4 and R7 or R8 and R11 may form a ring skeleton. Their production processes, pressure-sensitive adhesive compositions, self-adhesive polarizers and LCDs are also disclosed.
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- Sulfurization of phosphorus-containing compounds
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The present invention provides a method for sulfurizing a phosphorus-containing compound, such as a trivalent phosphorus compound, using a disulfide-containing five-membered heterocycle.
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- Synthetic, mechanistic, and structural studies related to 1,2,4-dithiazolidine-3,5-dione
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Reaction of 0-ethyl thiocarbamate (4) with (chlorocarbonyl)sulfenyl chloride (5) gives 3-ethoxy-1,2,4-dithiazolin-5-one (2) and 3,5-diethoxy-1,2,4-thiadiazole (3), with the relative amounts of 2 and 3 formed depending very much on the solvent (e.g., diethyl ether favors 2; chloroform favors 3). The effects of added base, order of addition, concentration, and temperature were also studied. Mechanisms for the observed transformations have been proposed and are supported by the characterization of relatively unstable acyclic intermediates, e.g., formimidoyl(chlorocarbonyl)-disulfane 8, symmetrical bis(formimidoyl)disulfane 10, and ethoxythiocarbonyl imidate 11, which are obtained under alternative conditions. Compound 2 is converted with concentrated aqueous hydrochloric acid upon short reflux to 1,2,4-dithiazolidine-3,5-dione (1), rearranges upon prolonged melting to give principally N-ethyl-1,2,4-dithiazolidine-3,5-dione (13), and is desulfurized with various trivalent phosphorus compounds to yield O-ethyl cyanate (15) plus carbonyl sulfide. X-ray crystallographic structures of 1 and 2 have been solved; the planarity and aromatic character of these molecules help to explain some of their reactions.
- Chen, Lin,Thompson, Tracy R.,Hammer, Robert P.,Barany, George
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p. 6639 - 6645
(2007/10/03)
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- THIA-1 AZA-3 BUTADIENES SUBSTITUES: ACTION DU CETENE ET DERIVES
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Novel, diversely substituted 1-thia 3-aza butadienes have been prepared and reacted with ketene or its derivatives.Via a general (4+2) cycloaddition reaction, they afford functionalised 6H-1,3-thiazine 6-ones, the electrophilic properties of which are described.This cycloaddition gives rise to other reaction products resulting from the addition of two or three molecules of ketene according to the nature of the substituents.
- Gokou, Celestin Tea,Chehna, Moustafa,Pradere, Jean-Paul,Duguay, Guy,Toupet, Loic
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p. 327 - 340
(2007/10/02)
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- Electron Deficient Heteroaromatic Ammonioamidates. Part 26. N-(Quinazolin-3-io)amidates. Part 13. Phototransformations of an N-(Quinazolin-3-io)thioamidate and of a 10bH-1,3,4-thiadiazoloquinazoline, the Ring Isomer of an N-(Quinazolin-3-io)thioamidate, and the Photochemical Fo
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Irradiation of the N-(quinazolin-3-io)thioamidate (10a) in ethanol and butylamine solution furnished, in addition to several other compounds, the 4,4'-biquinazolinyl (12a), the quinazolinyl alcohol (13a) and the quinazolinyl ketone (13b), respectively, the mesoionic triazoloquinazolinylium thiolate (18a) and the corresponding olate (18b) as novel type photolysis products.In contrast, irradiation of the 10bH-1,3,4-thiadiazoloquinazoline (11b), the ring isomer of the N-(quinazolin-3-io)thioamidate (10b) furnishes, with cleavage of either the quinazoline or the thiadiazole ring , a mixture of the thiadiazoles (21a,b), and the quinazoline derivatives (14a), (22a,b) in addition to 3,4-dimethoxybenzonitrile.Irradiation of various sulphur-containing quinazoline derivatives, including the quinazolinethiones (14a,e), the methylthioquinazoline (13f) and the diquinazolinyl disulphide (24a), leads to the formation of 4,4'-biquinazolinyls (12a) and (12b), respectively.Irradiation of the quinazoline (13c), which carries no sulphur-containing substituent, does not lead to the formation of the biquinazolinyl (12a); irradiation of a mixture of quinazoline (13e) and quinazolinethione (14a) gives rise to the formation of a mixture of biquinazolinyls (12a-c) with incorporation of the ring of the sulphur-free starting quinazoline (13e) into the products (12a) and (12b).
- Lempert-Sreter, Magda,Lempert, Karoly,Moeller, Joergen
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p. 1143 - 1152
(2007/10/02)
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- THE =C=S -> =C=O TRANSFORMATION USING THE SOFT NO(+)-SPECIES
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The reaction of NaNO2 in acidic solution with thiocarbonyl compounds has been studied.Secondary- and tertiary thioamides, 1-benzyl-hexahydro-2H-azepine-2-thione, 5-ethyl-5-phenyl thiobarbituric acid, certain thiourea derivatives, 2H-1-benzopyran-2-thione, O,O-diphenyl-thiocarbonic ester, O,S-diphenyl-dithiocarbonic ester, N,N-dimethyl-S-phenyl-dithiocarbamatic ester, N-ethyl-N-phenyl-O-ethyl-thiocarbamatic ester are all converted into the corresponding carbonyl-analogues. 4,4'-Bis(dimethylamino)-thiobenzophenone (Michler's thioketone) gives 3-nitro-4,4'-bis(dimethylamino)-benzophenone at room temperature.At (-10 deg C)-(-5 deg C) the expected oxo compound is obtained as the main product together with 4-(N-nitroso-methylamino)-4'-(dimethylamino)-benzophenone.
- Joergensen, K. A.,Ghattas, A.-B.A.G.,Lawesson, S.-O.
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p. 1163 - 1168
(2007/10/02)
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- Thioacyl Isocyanates, XVI. To the Knowledge of Ethoxy(thiocarbonyl) Isocyanate
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Ethoxy(thiocarbonyl) isocyanate (2), a thermically rather stable compound, is prepared by a simplified method.It dimerizes easily to 3, which itself is a good starting material for the monomer compound 2.The ratio between monomer and dimer (nitrobenzene, 93 deg C) and the reaction with some nucleophiles (to 6 - 9) are reported.
- Goerdeler, Joachim,Schulze, Andreas
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p. 1252 - 1255
(2007/10/02)
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- ELECTRON DEFICIENT HETEROAROMATIC AMMONIOAMIDATES, XVIII. THE SYNTHESIS AND PHOTOCHEMISTRY OF SOME N-ISOQUINOLINO(THIOAMIDATES)
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Thioacylation of isoquinolinioamide furnished the N-isoquinolinio(thioamidates) 2a-2c.Depending on the solvent, 2c exists either as a mixture with its tricyclic tautomer 5, or exclusively as the latter.The NMR and mass spectra, and the photochemistry of compounds 2a-2c are discussed.The photoproducts obtained include 3,4-dimethoxybenzonitrile, 3,4-dimethoxy(thiobenzamide), O-ethyl thiocarbamate, 1(2H)-isoquinolinethione (7a), 1(2H)-isoquinolinone (7b) and thiadiazoloisoquinolin-4-ium-2-olate (8a).Differences between the fragmentation upon electron impact and the photochemistry of the thioamidates of Types 1 and 2, as well as between the photochemistry of the thioamidates 2 and their amidate counterparts of Type 3 are discussed.Potassium permanganate oxidation of thiadiazoloisoquinolin-4-ium-2-thiolate (8b) furnishes the olate 8a and 1-isoquinolyl thiocyanate (12).
- Lempert-Sreter, M.,Lempert, K.,Tamas, J.,Vekey, K.
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p. 259 - 270
(2007/10/02)
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