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Showing 1-30 of 67 results for "D60400" within Papers
K Ganesh et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1621-1629 (2011-06-21)
Raman, UV-vis, 1H NMR, FT-IR, mass and fluorescence spectral techniques were employed to investigate the mechanism of interaction of irbesartan (IRB) drug with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and iodine. Interaction of IRB with iodine yields triiodide ion and its formation was confirmed
Solvent-Free One-Step Photochemical Hydroxylation of Benzene Derivatives by the Singlet Excited State of 2, 3-Dichloro-5, 6-dicyano-p-benzoquinone Acting as a Super Oxidant.
Ohkubo K, et al.
Chemistry?A European Journal , 21(7), 2855-2861 (2015)
K Sharma et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 92, 212-224 (2012-03-27)
Methyldopa is a much used antihypertensive drug. It is the subject matter of study mostly for the determination and estimation of methyldopa in pharmaceutical properties. These considerations led us to study the charge-transfer interactions between methyldopa, a centrally acting antihypertensive
Adel Mostafa et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1613-1620 (2011-07-01)
The spectrophotometric characteristics of the solid charge-transfer molecular complexes (CT) formed in the reaction of the electron donors imidazole (IML) and 1-benzylimidazole (BIML) with the σ-acceptor iodine and π-acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), tetracyanoethylene (TCNE) and 2,3,5,6-tetrachloro-1,4-benzoquinone (CHL) have been studied in
Diana M Doumas et al.
Addictive behaviors, 64, 93-100 (2016-09-07)
The eCHECKUP TO GO is identified as a highly effective, low-cost individually-focused alcohol intervention by the NIAAA CollegeAIM guide. The research on the eCHECKUP TO GO for High School is less consistent, suggesting that the program content, originally designed for
Süleyman Patir et al.
The Journal of organic chemistry, 76(1), 335-338 (2010-12-15)
It is presented that hexahydro-1,5-methano[4,3-b]indoles were efficiently synthesized in high yields (up to 89% yield) through the cyclization reaction of starting tetrahydrocarbazoles bearing a monoalkylaminocarbonylmethyl moiety at the C-2 position mediated by 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ). A mechanistic proposal is also given
Deprotection of benzyl ethers using 2, 3-dichloro-5, 6-dicyano-p-benzoquinone (DDQ) under photoirradiation.
Rahim MA, et al.
Tetrahedron Letters, 46(43), 7307-7309 (2005)
Asad Raza et al.
International journal of analytical chemistry, 2011, 680902-680902 (2011-07-16)
Two simple, fast, and accurate spectrophotometric methods for the determination of alendronate sodium are described. The methods are based on charge-transfer complex formation of the drug with two π-electron acceptors 7,7,7,8-tetracyanoquinodimethane (TCNQ) and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in acetonitrile and methanol medium.
Yu Zhang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 105, 352-358 (2013-01-22)
Vibrational and electronic spectral measurements were made for 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). Optimized geometrical structure and harmonic vibrational frequencies were computed by DFT(B3LYP, CAMB3LYP, B3P86, M062X, mPW3PBE and PBE1PBE) using 6-311++G(d,p) basis set. Complete assignments of the observed spectra were proposed. The
Jeffrey A Bridge et al.
Journal of child and adolescent psychopharmacology, 25(2), 114-123 (2015-03-10)
Impulsive-aggressive behaviors have been consistently implicated in the phenomenology, neurobiology, and familial aggregation of suicidal behavior. The purpose of this study was to extend previous work by examining laboratory behavioral measures of delayed reward impulsivity and impulsive aggression in adolescent
M Pandeeswaran et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 78(1), 375-382 (2010-11-26)
The electron accepting properties of the 2,3-dichloro-5,6-dicyanobenzoquinone and iodine and electron donating properties of the drug cilostazole have been studied using the UV-vis, FT-IR, GC-MS and Far-IR techniques. The interaction of cilostazole drug with iodine and 2,3-dichloro-5,6-dicyanobenzoquinone resulted via the
Sheri Madhu et al.
Inorganic chemistry, 50(10), 4392-4400 (2011-04-23)
A series of boron dipyrromethene (BODIPY) dyes containing two aldehyde functional groups at the 3 and 5 positions have been synthesized in low-to-decent yields in two steps. In the first step, the meso-aryl dipyrromethanes were treated with POCl(3) in N,N-dimethylformamide
Casey C Cosner et al.
Organic letters, 13(8), 2071-2073 (2011-03-15)
A practical, chemoselective oxidation of alcohols employing catalytic quantities of DDQ as the oxidant and Mn(OAc)(3) as the co-oxidant is described. Electron-rich benzylic alcohols are oxidized efficiently to their corresponding carbonyls, but less electron-rich benzylic alcohols remain unchanged. Allylic alcohols
Fabian Niedermair et al.
Inorganic chemistry, 49(20), 9333-9342 (2010-09-16)
A series of π-extended phosphorescent palladium(II) and platinum(II) porphyrin complexes were synthesized, in which additional benzene rings are fused radially onto at least one of the four peripheral benzo groups. The photophysical properties of the metalloporphyrins palladium(II)-meso-tetra-(4-fluorophenyl)mononaphthotribenzoporphyrin (Pd1NF), cis-palladium(II)-meso-tetra-(4-fluorophenyl)dibenzodinaphthoporphyrin (Pd2NF)
Dushant A Khobragade et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(39), 12267-12277 (2012-08-18)
A series of mono- and 1,1'-diheteroatom-substituted ferrocene derivatives as well as acylated ferrocenes was prepared efficiently by a unified strategy that consists of selective mono- and 1,1'-dilithiation reactions and subsequent coupling with carbon, phosphorus, sulfur and halogen electrophiles. Chemical oxidation
Silvia Berto et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 149, 75-82 (2015-05-06)
The charge-transfer complexes have scientific relevance because this type of molecular interaction is at the basis of the activity of pharmacological compounds and because the absorption bands of the complexes can be used for the quantification of electron donor molecules.
Mary A Nies et al.
TheScientificWorldJournal, 2012, 849018-849018 (2012-06-02)
Assess the relationship between body mass index (BMI) and drinking in college freshman. College freshman (N = 199) at a university completed the drinking questionnaires. Drinking amount and the alcohol problem index (RAPI) served as outcomes, and BMI was the
Jun Wang et al.
Environmental science & technology, 49(15), 9364-9373 (2015-06-27)
Hydroquinone and quinone functional groups were grafted onto a hierarchical porous carbon framework via the Friedel-Crafts reaction to develop more efficient adsorbents for the selective capture and removal of carbon dioxide from flue gases and natural gas. The oxygen-doped porous
Masoud Samet et al.
Organic & biomolecular chemistry, 13(7), 2170-2176 (2014-12-24)
Different strategies are employed in designing strong and selective anion receptors but stereoelectronic effects have been largely ignored. In this work, the stereo configuration of a non-interacting ether is found to have a large impact of more than two orders
Ashraf M Mahmoud
International journal of analytical chemistry, 2009, 307045-307045 (2010-02-09)
New rapid, sensitive, and accurate kinetic spectrophotometric methods were developed, for the first time, to determine omeprazole (OMZ) in its dosage forms. The methods were based on the formation of charge-transfer complexes with both iodine and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). The variables
Moamen S Refat et al.
Drug testing and analysis, 3(2), 116-131 (2011-02-16)
The charge-transfer (CT) interactions between the electron donor sulfasalazine (SS) and the acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), p-chloranil (CHL), picric acid (PA) and iodine have been studied spectrophotometrically in CHCl(3) or CH(3) OH solutions. The formed solid CT complexes were also isolated
Tanveer A Wani et al.
Chemistry Central journal, 6(1), 134-134 (2012-11-14)
Response surface methodology by Box-Behnken design employing the multivariate approach enables substantial improvement in the method development using fewer experiments, without wastage of large volumes of organic solvents, which leads to high analysis cost. This methodology has not been employed
D Chan et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 29(1), 66-72 (2011-11-03)
Due to on-going concern about the occurrence of triphenylmethane dye residues in fish destined for human consumption, a depletion study of crystal violet in salmon was carried out. Atlantic salmon less than 12 months old were exposed to crystal violet
Tanveer A Wani et al.
Chemistry Central journal, 5(1), 57-57 (2011-10-11)
The formation of a colored charge-transfer (CT) complex between atorvastatin calcium (ATR-Ca) as a n-electron donor and 2, 3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as a π-electron acceptor was investigated, for the first time. The spectral characteristics of the CT complex have been described
Jun-Jie Yin et al.
International journal of environmental research and public health, 5(1), 26-31 (2008-04-29)
Polycyclic aromatic hydrocarbons (PAHs) are widespread genotoxic environmental pollutants and potentially pose a health risk to humans. Although the biological and toxicological activities, including metabolism, mutagenicity, and carcinogenicity, of PAHs have been thoroughly studied, their phototoxicity and photo-induced biological activity
A novel method for the highly efficient synthesis of 1,2-benzisoxazoles under neutral conditions using the Ph3P/DDQ system
Iranpoor N, et al.
Tetrahedron Letters, 47, 8247-8247 (2006)
Lei Liu et al.
Organic letters, 12(20), 4686-4689 (2010-09-25)
Several oxidative reactions can be effected with MnO(2) in the presence of substoichiometric quantities of DDQ. These transformations include oxidative cyclization, deprotection, and dehydrogenation reactions. The use of MnO(2) as a terminal oxidant for DDQ-mediated reactions is attractive based on
Efficient synthesis of functionalized furans and benzofurans based on a '[3+ 2] cyclization/oxidation'strategy.
Bellur E, et al.
Tetrahedron Letters, 46(13), 2185-2187 (2005)
Ramzia I El-Bagary et al.
International journal of biomedical science : IJBS, 8(3), 204-208 (2013-05-16)
Simple, accurate and precise spectrophotometric methods have been developed for the determination of saxagliptin in bulk and dosage forms. The proposed methods are based on the charge transfer complexes of saxagliptin with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ). All the variables
Simon Roehrer et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1095, 39-49 (2018-07-28)
Hop has been attracting scientific attention due to its favorable bioactivity properties. It is thus desirable to relate these properties to the specific hop compounds and extract these compounds in highly purified form in order to enhance the effect. The
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