Heterocyclic Building Blocks-Isothiazole

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.Quality Control of 3-Piperazinobenzisothiazole hydrochloride, Name is 3-Piperazinobenzisothiazole hydrochloride, molecular formula is C11H14ClN3S, Quality Control of 3-Piperazinobenzisothiazole hydrochloride. In a Article, authors is Yevich£¬once mentioned of Quality Control of 3-Piperazinobenzisothiazole hydrochloride

Synthesis and biological evaluation of 1-(1,2-benzisothiazol-3-yl)- and (1,2-benzisoxazol-3-yl)piperazine derivatives as potential antipsychotic agents

Members of the series of title compounds were tested for potential antipsychotic activity in relevant receptor binding assays and behavioral screens. Structure-activity relationships within the series are discussed. Compound 24 (BMY 13859-1), a (1,2-benzisothiazol-3-yl)piperazine derivative, was selected for further study because of its potent and selective profile in primary CNS tests. It was active in the Sidman avoidance paradigm and blocked amphetamine-induced stereotyped behavior in dogs for up to 7 h. The compound’s lack of typical neuroleptic-like effects in the rat catalepsy test and its failure to produce dopamine receptor supersensitivity following chronic administration indicate that it should not cause the movement disorders commonly associated with antipsychotic therapy. Although 24 has potent affinity for dopaminergic binding sites, its even greater affinity for serotonin receptors suggests that a serotonergic component may be relevant to its atypical profile. Compound 24 is currently undergoing clinical evaluation in schizophrenic patients.

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Synthetic Route of 288-16-4, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 288-16-4, Name is Isothiazole,introducing its new discovery.

Design and synthesis of 3,7-diarylimidazopyridines as inhibitors of the VEGF-receptor KDR

3,7-Diarylsubstituted imidazopyridines were designed and developed as a new class of KDR kinase inhibitors. A variety of imidazopyridines were synthesized and potent inhibitors of KDR kinase activity were identified with good aqueous solubility.

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The heavy atom structures and 33S quadrupole coupling constants of 2-thiophenecarboxaldehyde: insights from microwave spectroscopy

We report on the structures of two conformers of 2-thiophenecarboxaldehyde as obtained using a combination of molecular jet Fourier-transform microwave spectroscopy and quantum chemical calculations. The microwave spectrum was recorded using two spectrometers operating in the frequency ranges of 2.0 to 26.5 GHz and 26.5 to 40.0 GHz. The spectra of all singly-substituted heavy atom isotopologues 13C, 18O and 34S in their natural abundances could be measured and assigned to determine the gas-phase substitution rs and semi-experimental re SE structures of the most abundant conformer. The spectrum of the 33S isotopologue with its nuclear quadrupole coupling hyperfine structure was analysed, yielding the complete quadrupole tensor with high accuracy. The experimental results are used to map the observed rotational constants to the corresponding molecular structure obtained from quantum chemical calculations, which predicted two conformers with an energy difference of about 6 kJ mol?1 at the MP2/6-311++G(d,p) level of theory. Insight into the conformational stability of aromatic heterocyclic carboxaldehydes and bond situations of the sulfur atom extracted from the hyperfine structure of the 33S nucleus are discussed within the frame of the current literature. This work provides an important contribution to the study and characterisation of sulfur-containing volatile organic compounds.

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Synthetic Route of 87691-88-1, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. Synthetic Route of 87691-88-1, Name is 3-Piperazinobenzisothiazole hydrochloride, molecular formula is C11H14ClN3S. In a Patent, authors is £¬once mentioned of Synthetic Route of 87691-88-1

BENZOPYRONE DERIVATIVE AND USE THEREOF

The present invention relates to the field of pharmaceutical chemistry, and in particular, to a benzopyrone derivative and a use thereof. The benzopyrone derivative is compound having a structure of formula (I) or a pharmaceutically acceptable salt thereof. It has been found by experiments that, this type of compounds is useful in prevention or treatment of neuropsychical diseases.

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Electric Literature of 288-16-4, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 288-16-4, Name is Isothiazole,introducing its new discovery.

A vascular endothelial growth factor inhibitors of the dry powder pharmaceutical composition (by machine translation)

The invention relates to the treatment of respiratory diseases especially asthma of a vascular endothelial growth factor inhibitors of the dry powder pharmaceutical composition, in particular to the active compound component I its physiologically acceptable salt, one or several kinds can be used for inhalation pharmaceutical excipient dry powder inhalation pharmaceutical composition. (by machine translation)

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Application of 111248-89-6, 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, Application of 111248-89-6, name is 1,3-Dihydrobenzo[c]isothiazole 2,2-dioxide, introducing its new discovery.

Application of photoelectron spectroscopy to molecular properties, 57[?] UV photoelectron spectroscopy studies of the products of thermal extrusion of sulfur dioxide from benzosultams

An aza-ortho-xylylene system is produced by thermal degradation of N- alkylbenzosultam, which can be directly studied by coupling the system to a UV/photoelectron spectrometer. These thermodynamically unstable xylylene derivatives rearrange to give aldimine by a [1,5] hydrogen shift.

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One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, SDS of cas: 288-16-4, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 288-16-4, Name is Isothiazole, molecular formula is C3H3NS

Cyano substituent effects on enol and enethiol acidity and basicity: The protonation and deprotonation of 3-hydroxy-2-propenenitrile and its thio analogue

The gas-phase basicity and acidity of 3-hydroxy-2-propenenitrile (3-hydroxyacrylonitrile) and its sulfur-containing analogue, 3-mercapto-2-propenenitrile, have been determined by means of high-level G3B3 ab initio calculations and, in the case of the latter compound, compared with the experimental values obtained by means of FT-ICR mass spectrometry techniques, and with previous reported values for the N{triple bond, long}C-CH{double bond, long}CH-X (X = CH3, NH2, SiH3, PH2) analogues. For both compounds the Z-isomer is the dominant species in the gas-phase. Protonation takes place in both cases at the cyano group. The loss of the proton from the substituent, was found to be systematically much more favorable than the deprotonation at the HC{double bond, long}CH group. 3-Hydroxy-2-propenenitrile is predicted to be a stronger base by ca. 5 kJ mol-1 than its thio analogue, but a weaker acid by 26 kJ mol-1. Both compounds are stronger acids than the corresponding unsubstituted vinyl compounds, because cyano substitution stabilizes much more the deprotonated species than the corresponding neutral compound. There is a clear disagreement between our theoretical estimates for both the gas-phase basicity and the gas-phase acidity of 3-mercapto-2-propenenitrile and the corresponding experimental values, which is consistent with its isomerization to yield isothiazole.

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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, the author is Garcia-Carpintero, E. Gomez and a compound is mentioned, Product Details of 272-16-2, Benzo[d]isothiazole, introducing its new discovery. Product Details of 272-16-2

Aroma characterization of red wines from cv. Bobal grape variety grown in La Mancha region

Bobal is an indigenous Spanish cultivar, principally grown in the region of Valencia. The volatile composition of young red wines made from the cv. Bobal grape variety grown in the La Mancha region of Spain has been studied over five vintages by instrumental analysis to determine the influence of grape variety on the aroma of wine. Free and glycosidically-bound aroma compounds were isolated by solid phase extraction (SPE) using dichloromethane and ethyl acetate respectively to later be analyzed using gas chromatography-mass spectrometry (GC/MS). One hundred and twelve (112) free aroma compounds and ninety-six (96) bound aroma compounds were identified and quantified in Bobal wines oven this five year period. Based on the result, Bobal wine presents a complex chemical profile with a wealth of aromas in its aromatic composition.

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Silver mediated direct C-H arylation of 3-bromoisothiazole-5-carbonitrile

Palladium catalyzed direct C-H arylation of 3-bromoisothiazole-5-carbonitrile with aryl/hetaryl iodides in the presence of AgF gave 13 4-aryl/hetaryl-3-bromoisothiazole-5-carbonitriles. The scope of this arylation was investigated and explanations for the limitations proposed. 3-Bromoisothiazole-5-carboxamide was isolated as a side-product, and its formation was attributed to Ag+-catalyzed hydration of the C-5 nitrile. The analogous phenylation of 3-chloroisothiazole-5-carbonitrile and 3-bromoisothiazole-4-carboxamide gave 3-chloro-4-phenylisothiazole-5-carbonitrile and 3-bromo-5-phenylisothiazole-4-carboxamide in 83 and 64% yields, respectively.

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Synthetic Route of 27148-03-4, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.27148-03-4, Name is Benzo[d]isothiazole-3(2H)-thione 1,1-dioxide, molecular formula is C7H5NO2S2. In a Article£¬once mentioned of 27148-03-4

A new supramolecular assembly obtained by reaction between thiosaccharin and pyridine

The crystal structure of pyridinium thiosaccharinate thiosaccharin, [HNC5H5]+ [(tsac)(Htsac)]- (Htsac = C7H5NO2S2, the thiosaccharin molecule), was determined by single-crystal X-ray diffraction. Both, the thiosaccharinate anion, the corresponding neutral molecule and the pyridinium cation are nearly planar and arranged in the solid state in an almost parallel fashion, hence giving rise to a layered supramolecular structure. The anion shows small but significant modifications in the bonding of the thioamide group as compared with the neutral molecule. The crystal is further stabilized by an extensive H-bonding network. The FTIR spectrum of the compound is briefly commented.

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