Research on Chemical Intermediates

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‘In water’ exploration of Alpinia zerumbet-fabricated CuO NPs in the presence of NaPTS at room temperature: green synthesis of 1,8-dioxooctahydroxanthene derivatives
Research on Chemical Intermediates - - 2021
Bipin Shinde, Santosh Kamble, Harsharaj Jadhav, Prasad Mane, Kalpesh Khude, Hern Kim, Bhausaheb Karale, Arvind Burungale
The biogenic synthesis of copper oxide nanoparticles (CuO NPs) from the leaf extract of Alpinia zerumbet was investigated in this protocol. The basic nature of A. zerumbet leaf extract helps in CuO NPs synthesis. The catalytic activity of A. zerumbet-fabricated CuO NPs is explored in water at room temperature only in the presence of NaPTS hydrotrope. The green catalytic protocol is investigated vi...... hiện toàn bộ
Molecular orbital and DFT studies of the alimemazine radical cation
Research on Chemical Intermediates - Tập 26 - Trang 739-745 - 2000
Ke-Sheng Song, Lei Liu, Chen -Rui Hou, Xiao -Song Li, Qing -Xiang Guo
Semiempirical molecular orbital methods including CNDO, MNDO, AM1 and PM3, and density function theory method B3LYP/3-21G(d) were employed in the study of the alimemazine radical cation. It was found that PM3 was much better than CNDO, MNDO and AM1 in the structural optimization. The bond lengths and bond angles by PM3 were close to the experimental data, and comparable with the results by the den...... hiện toàn bộ
Time-resolved Esr spectroscopy (Cidep) of ketones
Research on Chemical Intermediates - Tập 18 - Trang 227-292 - 1993
J. K. S. Wan, M. C. Depew
Efficient synthesis of chromenopyridines containing intramolecular hydrogen bonds through a sequential three-component reaction
Research on Chemical Intermediates - Tập 42 - Trang 5927-5936 - 2016
Abdolali Alizadeh, Fahimeh Bayat, Zhe Zhu
A one-pot sequential reaction of 1,1-bis(methylsulfanyl)-2-nitroethene, diamines, and 3‐formylchromones in EtOH has been developed to afford chromenopyridines. The method is operationally simple and the products are obtained in good yields.
Ultrasonic route synthesis, characterization and electrochemical study of graphene oxide and reduced graphene oxide
Research on Chemical Intermediates - Tập 45 Số 2 - Trang 487-505 - 2019
Maryam Sabbaghan, Hossein Charkhan, Masoumeh Ghalkhani, Javad Beheshtian
Synthesis and characterization of Mg–M (M: Al, Fe, Cr) layered double hydroxides and their application in the hydrogenation of benzaldehyde
Research on Chemical Intermediates - Tập 40 - Trang 931-946 - 2013
H. Zazoua, A. Saadi, K. Bachari, D. Halliche, C. Rabia
Layered double hydroxides or hydrotalcite-like compounds with different kinds of metal ions (Mg–Al, Mg–Fe and Mg–Cr) in the brucite-like sheets were prepared by a co-precipitation method with Mg/M3+ molar ratio of ~2. The hydrotalcites were characterized by chemical analysis, X-ray diffraction, Fourier transform infrared spectroscopy, temperature programmed reduction, SEM microscopy, and specific ...... hiện toàn bộ
Characterization of hydrogen production by the co-culture of dark-fermentative and photosynthetic bacteria
Research on Chemical Intermediates - Tập 42 Số 11 - Trang 7713-7722 - 2016
Daisuke Takagi, Shingo Okamura, Kota Tanaka, Naoki Ikenaga, Masayuki Iwashima, Seyed Mohammad Ali Haghparast, Nobuyuki Tanaka, Jun Miyake
An ESR study of the radical interactions of NOx with lignin-containing pulps and papers and several model lignin compounds
Research on Chemical Intermediates - Tập 21 Số 3 - Trang 425-439 - 1995
Pemberton, R. S., Depew, M. C., Pollington, S. D., Wan, J. K. S.
The reactions of alkyl peroxyl radicals with cellulosic and lignin-containing papers have significance in both the problems of brightness reversion and paper aging phenomena. Since transient peroxyl radicals are elusive to ESR and other spectroscopic detection, we have explored the controlled study of the interactions of nitrogen oxides with paper and some model lignin compounds in solution as a c...... hiện toàn bộ
Effect of zero-valent iron on biological denitrification in the autotrophic denitrification system
Research on Chemical Intermediates - Tập 44 - Trang 6011-6022 - 2018
Jin suo Lu, Ting ting Lian, Jun feng Su
This study investigated nitrate removal using biological denitrification by the iron-reducing bacteria strain CC76 combined with zero-valent iron (ZVI) in simulated groundwater under anaerobic conditions. The mechanism of nitrate reduction as well as the process of iron cycling by strain CC76 and ZVI were studied. During growth experiments, the strain CC76 showed the ability to utilize Fe2+ (elect...... hiện toàn bộ
Sodium ascorbate as an expedient catalyst for green synthesis of polysubstituted 5-aminopyrazole-4-carbonitriles and 6-amino-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles
Research on Chemical Intermediates - Tập 44 - Trang 2761-2778 - 2018
Hamzeh Kiyani, Maryam Bamdad
Sodium ascorbate (SA) was used as a safe catalyst for the synthesis of 5-aminopyrazole-4-carbonitriles from the one-pot three-component cyclocondensation (3-CC) of aldehydes, phenylhydrazine, and malononitrile at 50 °C. This 3-CC proceeds in a mixture of ethanol–water as a green reaction medium to give the desired densely functionalized pyrazoles in good to high yields. 6-Amino-1,4-dihydropyrano-[...... hiện toàn bộ
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