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Reaction yield
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The process of synthesizing materials by sonochemical method depends on factors such as reaction rate, reaction concentration, reaction power, reaction time, etc. In this study, we investigate the influence of the above factors on the synthesis of materials by sonochemical method.
8p
viambani
18-06-2024
2
1
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In this study, Taguchi's experimental design method was used to improve the yield of FOX-7. Verification of the results shows that the optimal synthesis parameters are as follows: the molar ratio of HNO3/MPD is 8, the reaction time is 180 minutes, and the reaction temperature is 15°C; the maximum yield of FOX-7 can reach 79.14%.
8p
viambani
18-06-2024
1
1
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Green synthesis of UV absorber (E)-2-(((4- (benzyloxy)phenyl)imino)methyl)phenol by microwave method
In this work, a UV absorber compound (E)-2-(((4-(benzyloxy)phenyl)imino)methyl)phenol was synthesized by microwave method using a two steps protocol. In the first step, α-(4-hydroxyphenylimino)-o-cresol (1) was synthesized from 4-aminophenol and salicylaldehyde by circulating under microwave heating at 60 oC for 8 minutes, the reaction yield reached 82.91 %.
9p
vijaychest
24-04-2024
5
2
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These reactions involved a condensation reaction of aromatic benzaldehydes, 5,5-dimethyl-1,3-cyclohexanedione, and dicyanomethane in a solvent mixture of ethanol and water, resulting in the desired products in moderate to good yields. The procedure is efficient and eco-friendly, and the products can be easily obtained by recrystallisation. Thus, this protocol offers an alternative to existing methods.
12p
viellison
28-03-2024
5
1
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In ebook "Total synthesis of (±)-Maoecrystal V" the author describes the total synthesis of natural product Maoecrystal V in detail. In the first part of the thesis, the author introduces the research background and reviews the research progress in total synthesis of Maoecrystal V. In the second part, the author develops a novel and concise approach for the stereo selective construction of the tetracyclic model system of Maoecrystal V. The model system is accomplished in 8 steps with 20% yield.
146p
nhanphanguyet
28-01-2024
4
2
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The heterogeneous recyclable catalyst, Cu-Fe hydrotalcite, was synthesized by coprecipitation, activated at 200oC and then successfully applied in Aldol reaction. This procedure also exhibited efficiency in the total synthesis of Abhexone, a flavor with high demand in the food and cosmetic industry.
9p
viengels
25-08-2023
6
3
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The synthesized complexes have also been explored for forensic applications as fingerprint developing dyes. Apart from the excellent photoluminescent properties and forensic applications of the synthesized compounds, the scope of the work includes mild reaction conditions and better yield with easy of one pot synthesis by using readily available salicylaldehydes/2-hydroxy-1-napthaldehyde, cylohexyl-1,2-diamine and zinc acetate.
9p
viberbers
09-08-2023
9
3
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Worldwide petroleum reserves are decreasing rapidly; therefore, looking for sustainable and renewable energy is currently one of the targets of scientists. Biodiesel which can satisfy these requirements is synthesized by the transesterification of plant/animal oil with alcohols, typically methanol, catalyzed by acid or base.
7p
vidoctorstrange
06-05-2023
5
3
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The histidine ammonia-lyse gene (HAL) encodes the histidine ammonia-lyase, which catalyzes the first reaction of histidine catabolism. In our previous genome-wide association study in Chinese Holstein cows to identify genetic variants affecting milk production traits, a SNP (rs41647754) located 357 bp upstream of HAL, was found to be significantly associated with milk yield and milk protein yield.
9p
vinarcissa
21-03-2023
6
1
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In this work, a novel compound named triazine-furan, comprised of a triazine acceptor moiety and a furan donor side group, was designed and synthesised for the first time. The influences of temperature and the feeding proportion of cyanuric chloride to furfurylamine were investigated to optimise the reaction yield and purification process.
3p
vicedric
08-02-2023
9
2
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Known 1,6-di(thiophen-2-yl)hexane-1,6-dione (2) and novel 1,7-di(thiophen-2-yl)heptane-1,7-dione (4) were obtained from the reactions of thiophene with the corresponding diacyl chlorides. Furthermore, compounds with furan and pyrrole units in place of thiophene units in compound 2 were obtained in the same way. Bromination of 2 and 4 gave bromides regioselectively. The reaction of each of the compounds 2 and 4 in HOAc medium yielded cyclocondensation products. In total, four known and eleven novel compounds were synthesized.
15p
lyhuyenthu
31-01-2023
3
2
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In this study poly (4-nitrophenylazo-3-aminopyridine - formaldehyde) (PNAAP-F) and poly (4-nitroarylazo-3-chloro-6- hydroxypyridine - formaldehyde) (NAACHP-F) were synthesized via diazotization, coupling and polycondensation reactions. The structural properties of the as-synthesized dyes were acquired using Fourier-transform infrared spectroscopy (FTIR) and UV-visible absorption maxima and their color, yield, melting point, solubility, and viscosity were determined via standard methods.
12p
lyhuyenthu
31-01-2023
2
2
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The cross-linked microbeads with average diameter of 106–300 μm, [poly(EGDMA-MATrp)], were obtained by copolymerization reaction of N-methacryloyl-L-(+)-tryptophan methyl ester (MATrp) with ethylene glycol dimethacrylate (EGDMA) and successfully applied as a heterogeneous catalyst in conjugate addition reaction of nitromethane to substituted 2-iminochromenes in aqueous media. A variety of 2-amino-4-(nitromethyl)-4H-chromene-3-carbonitriles has been synthesized in good yields. Polymeric microbeads were very durable and reused 5 times without a significant loss of activity.
9p
lyhuyenthu
31-01-2023
3
1
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Mechanochemical activation and steam-assisted interzeolite transformation offer a simple, fast and cost-efficient synthesis route to gmelinite (GME) zeolite. The use of faujasite (FAU) as the parent zeolite precursor facilitates the reaction and results in high yields of high-quality GME in less than 20 h under optimized conditions. The accessible porosity and amounts of stacking-faults were determined by N2 physisorption and XRD analysis, respectively.
8p
vironald
15-12-2022
4
2
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The paper presents a simple and efficient synthesis of a series of new quinazolinone derivatives 8a-h. First, the reaction of 5-hydroxyanthranilic acid (6) with acetic anhydride at 160–180oC for 2 h gave the intermediate 7 in high yield. This intermediate was then reacted with amines in acetic acid at 180 oC for 14 h afforded new quinazolinone derivatives 8a-h in 77–92%.
5p
vimelindagates
18-07-2022
9
2
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This paper presented a straightforward method for synthesizing thioamides by using N-tert-butylsulfinyl amide, aldehyde, and sulfur. The reaction was carried out in water, which is an environmentally friendly solvent. The reaction selectivity and yield were up to 89%.
7p
vihassoplattner
04-01-2022
14
0
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The Anatolian water buffalo is a native water buffalo breed only being reared in Turkey. The objective of this study was to investigate gene polymorphisms on exons 4 and 5 of the growth hormone (GH) and on exon 10 of the growth hormone receptor (GHR), which are thought to be related to meat yields of Anatolian water buffalo. Blood samples of 192 water buffaloes from Sivas Province were used in DNA extractions by phenol-chloroform method. DNA samples were amplified by using specific primers in PCR.
6p
dolomite36
30-12-2021
9
0
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This topic was studied to confirm the validity of the cultivar selection through investigation of powdery mildew infections of spring wheat cultivars either under controlled or natural conditions along with the impact on grain weight.
7p
schindler
30-12-2021
12
0
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Around 200 different lipopeptides (LPs) have been identified to date, most of which are produced via Bacillus and Pseudomonas species. The clinical nature of the lipopeptide (LP) has led to a big surge in its research. They show antimicrobial and antitumor activities due to which mass-scale production and purification of LPs are beneficial. Response surface methodology (RSM) approach has emerged as an alternative in the field of computational biology for optimizing the reaction parameters using statistical models. In the present study, Pseudomonas sp.
16p
langthannam
29-12-2021
10
0
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Ionic liquid mediated synthesis of novel heterocyclic compounds 1-[(1H -benzoimidazol-2-yl)amino]-2 - phenylspiro[azetidine-4,4 -[4 H ]chroman]-2-ones (3) and 1-[(1H -benzoimidazol-2-yl)amino]-3-chloro-2 -phenylspiro[aze tidine-4,4 -[4 H ] chroman]-2-ones (4) was accomplished by condensing substituted 2-hydrazino benzimidazole (1), flavanone (2), and acetyl chloride/chloroacetyl chloride in ionic liquid, [bmim]PF6 with or without using catalyst in excellent yield (90%–95%).
13p
langthannam
29-12-2021
8
0
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