Tag: 100-200

Regioselective (thio)carbamoylation of 2,7-di-tert-butylpyrene at the 1-position with iso(thio)cyanates was written by Wrona-Piotrowicz, Anna;Witalewska, Marzena;Zakrzewski, Janusz;Makal, Anna. And the article was included in Beilstein Journal of Organic Chemistry in 2017.Formula: C4H7NS The following contents are mentioned in the article:

It has been found that 2,7-di-tert-butylpyrene reacts with aliphatic iso(thio)cyanates X=C=NR (R = Et, Bu, cyclohexyl, etc.) in the presence of trifluoromethanesulfonic acid to exclusively afford the corresponding 1-substituted (thio)amides I (R¹ = H, C(O)NHC₆H₅, C(S)NHC₆H₅, C(S)NHCH₂C₆H₅, 4-CH₃OC₆H₄NHC(O); R² = H; X = O, S) in high yields. For aromatic iso(thio)cyanates X=C=NR (R = Ph, benzyl and 4-methoxyphenyl) the reaction is less regioselective, although substitution at the 1-position prevails. For ethoxycarbonyl isothiocyanate, apart from the 1-substituted thioamide I (R = C(O)OC₂H₅; R¹ = H; R² = H; X = S), 1,8-disubstituted thioamide I (R = C(O)OC₂H₅; R¹ = H; R² = C(S)NHC(O)OC₂H₅; X = S) and 2,7-di-tert-butylpyrene-1-carbonitrile are formed (especially at longer reaction times). This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Formula: C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C4H7NS

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Novel thiosemicarbazone derivatives containing benzimidazole moiety: Green synthesis and anti-malarial activity was written by Divatia, Saavani M.;Rajani, Dhanji P.;Rajani, Smita D.;Patel, Hitesh D.. And the article was included in Arabian Journal of Chemistry in 2019.Category: esters-buliding-blocks The following contents are mentioned in the article:

A series of (E)-2-[5-chloro-1-(1H-benzo[d]imidazol-2-yl)ethylidene]-N-(substituted)hydrazine carbothioamides and (E)-2-[1-(1H-benzo[d]imidazol-2-yl)ethylidene]-N-(substituted)hydrazine carbothioamides I (X = H, Cl; R = H, Ph, Et, etc.) were prepared via the synthesis of 1-(substituted-1H-benzimidazol-2-yl)ethanol which was synthesized by the condensation of substituted o-phenylenediamine with DL-lactic acid followed by oxidation with sodium hypochlorite in mild acidic condition to form the corresponding ketones. Final compounds were formed by condensation of corresponding ketones with different thiosemicarbazides. A total of 40 compounds were synthesized and evaluated for anti-malarial properties. Among the compounds tested I (X = Cl, H; R = OCC₆H₅, 4-FC₆H4, 4-IC₆H₄, 4-MeC₆H₄, 2,3-Cl₂C₆H₃, 3,4-ClC₆H₃, c-C₆H₁₁, 4-MeOC₆H₄) exhibited good antimalarial activity in vitro. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Category: esters-buliding-blocks).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Novel thiosemicarbazone derivatives containing benzimidazole moiety: Green synthesis and anti-malarial activity was written by Divatia, Saavani M.;Rajani, Dhanji P.;Rajani, Smita D.;Patel, Hitesh D.. And the article was included in Arabian Journal of Chemistry in 2019.Computed Properties of C4H7NS The following contents are mentioned in the article:

A series of (E)-2-[5-chloro-1-(1H-benzo[d]imidazol-2-yl)ethylidene]-N-(substituted)hydrazine carbothioamides and (E)-2-[1-(1H-benzo[d]imidazol-2-yl)ethylidene]-N-(substituted)hydrazine carbothioamides I (X = H, Cl; R = H, Ph, Et, etc.) were prepared via the synthesis of 1-(substituted-1H-benzimidazol-2-yl)ethanol which was synthesized by the condensation of substituted o-phenylenediamine with DL-lactic acid followed by oxidation with sodium hypochlorite in mild acidic condition to form the corresponding ketones. Final compounds were formed by condensation of corresponding ketones with different thiosemicarbazides. A total of 40 compounds were synthesized and evaluated for anti-malarial properties. Among the compounds tested I (X = Cl, H; R = OCC₆H₅, 4-FC₆H4, 4-IC₆H₄, 4-MeC₆H₄, 2,3-Cl₂C₆H₃, 3,4-ClC₆H₃, c-C₆H₁₁, 4-MeOC₆H₄) exhibited good antimalarial activity in vitro. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Computed Properties of C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Computed Properties of C4H7NS

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Biodiesel production from wild olive oil using TPA decorated Cr-Al acid heterogeneous catalyst was written by Islam, Muhammad Ghayas Ul;Jan, Muhammad Tariq;Farooq, Muhammad;Naeem, Abdul;Khan, Ihtisham Wali;Khattak, Hidayat Ullah. And the article was included in Chemical Engineering Research and Design in 2022.Name: Methyl heptanoate The following contents are mentioned in the article:

In the present work, wild olive (Olea oleaster) plant oil was chosen as a hopeful feedstock for efficient biodiesel production Mixed oxides of aluminum and chromium were modified with different amounts (10-40 weight%) of 12-tungstophosphonic acid (TPA), used for biodiesel production from low cost local wild olive oil (WOO). Moreover, the physicochem. characteristics of the synthesized catalysts were elaborated with different anal. techniques such as XRD, SEM, EDX, BET. The biodiesel reaction was carried out in a single step via trans-esterification reaction using TPA impregnated Cr-Al mixed oxide catalyst. The maximum 93% biodiesel yield was obtained under the optimized conditions: oil/methanol molar ratio 1:21, reaction temperature 80°C, catalyst dosage 4 wt% and reaction times 5 h with stirring speed of 600 rpm. Interestingly, the reusability experiments showed that the synthesized catalyst sustained remarkable stability and reusability up to 5 runs in the biodiesel production from wild olive oil. Furthermore, the synthesized biodiesel completely complied with international standards This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Name: Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Name: Methyl heptanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Synthesis, Antifungal Activity and 3D-QSAR Study of Novel Anisaldehyde-Derived Amide-Thiourea Compounds was written by Li, Rong;Cen, Bo;Duan, Wengui;Lin, Guishan. And the article was included in Chemistry & Biodiversity in 2022.Product Details of 2253-73-8 The following contents are mentioned in the article:

Succinate dehydrogenase (SDH) is an important target enzyme for designing agricultural chem. fungicides. In order to explore novel natural product-based antifungal agents, twenty-one unreported anisaldehyde-derived amide-thiourea compounds I (R = Me, cyclohexyl, Ph, etc.) were designed and synthesized using the principle of active splicing, and structurally confirmed. In vitro antifungal activity of the target compounds was evaluated by the agar dilution method. The results showed that some target compounds exhibited better or comparable antifungal activity than that of the com. fungicide chlorothalonil, in which compounds I (R = 3-nitrophenyl, 4-chlorophenyl, Me) displayed excellent antifungal activity of 92.6%, 92.6% and 99.1% against P. piricola, resp., better than that of the pos. control. In addition, 3D-QSAR anal. was carried out by the CoMFA method to reveal the relationship between the structures of the target compounds and their inhibitory activities. The simulative binding mode of the target compounds and SDH was also studied by mol. docking. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Product Details of 2253-73-8).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Product Details of 2253-73-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Synthesis, Antifungal Activity and 3D-QSAR Study of Novel Anisaldehyde-Derived Amide-Thiourea Compounds was written by Li, Rong;Cen, Bo;Duan, Wengui;Lin, Guishan. And the article was included in Chemistry & Biodiversity in 2022.Related Products of 2253-73-8 The following contents are mentioned in the article:

Succinate dehydrogenase (SDH) is an important target enzyme for designing agricultural chem. fungicides. In order to explore novel natural product-based antifungal agents, twenty-one unreported anisaldehyde-derived amide-thiourea compounds I (R = Me, cyclohexyl, Ph, etc.) were designed and synthesized using the principle of active splicing, and structurally confirmed. In vitro antifungal activity of the target compounds was evaluated by the agar dilution method. The results showed that some target compounds exhibited better or comparable antifungal activity than that of the com. fungicide chlorothalonil, in which compounds I (R = 3-nitrophenyl, 4-chlorophenyl, Me) displayed excellent antifungal activity of 92.6%, 92.6% and 99.1% against P. piricola, resp., better than that of the pos. control. In addition, 3D-QSAR anal. was carried out by the CoMFA method to reveal the relationship between the structures of the target compounds and their inhibitory activities. The simulative binding mode of the target compounds and SDH was also studied by mol. docking. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Related Products of 2253-73-8).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Related Products of 2253-73-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sidearm effect in (thio)urea/alkoxide-mediated ring-opening polymerization of cyclic esters was written by Zhu, Ningning;Behzadi, Shabnam;Si, Guifu;Tan, Chen. And the article was included in Polymer International in 2021.Electric Literature of C4H7NS The following contents are mentioned in the article:

Thiourea and urea catalysts have received much attention in the field of ring-opening polymerization In the (thio)urea/alkoxide catalytic system, sidearm groups can influence the catalytic performance of the organocatalyst moiety. In this work, a series of (thio)ureas bearing 2-, 3- and 4-pyridyl moieties were designed and synthesized. The (thio)ureas bearing a 2-pyridyl group exhibited much higher catalytic activities than the (thio)ureas bearing 3- or 4-pyridyl groups, suggesting a sidearm effect. Both crystal data and computational studies indicated that 2-pyridyl can form an intramol. hydrogen bond with the NH moiety, resulting in a Broensted base/Lewis acid bifunctional catalytic system. Furthermore, the catalyst was stimuli-responsive in Lewis acid/base-modulated ring-opening polymerization Coordination between the Lewis acid BEt₃ and the catalyst was found to terminate the polymerization Subsequently, the coordinated species was cleaved using the Lewis base bicyclo[2.2.2]-1,4-diazaoctane, resulting in the reactivation of the catalyst. 2020 Society of Chem. Industry. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Electric Literature of C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Electric Literature of C4H7NS

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sidearm effect in (thio)urea/alkoxide-mediated ring-opening polymerization of cyclic esters was written by Zhu, Ningning;Behzadi, Shabnam;Si, Guifu;Tan, Chen. And the article was included in Polymer International in 2021.Recommanded Product: Isopropylisothiocyanate The following contents are mentioned in the article:

Thiourea and urea catalysts have received much attention in the field of ring-opening polymerization In the (thio)urea/alkoxide catalytic system, sidearm groups can influence the catalytic performance of the organocatalyst moiety. In this work, a series of (thio)ureas bearing 2-, 3- and 4-pyridyl moieties were designed and synthesized. The (thio)ureas bearing a 2-pyridyl group exhibited much higher catalytic activities than the (thio)ureas bearing 3- or 4-pyridyl groups, suggesting a sidearm effect. Both crystal data and computational studies indicated that 2-pyridyl can form an intramol. hydrogen bond with the NH moiety, resulting in a Broensted base/Lewis acid bifunctional catalytic system. Furthermore, the catalyst was stimuli-responsive in Lewis acid/base-modulated ring-opening polymerization Coordination between the Lewis acid BEt₃ and the catalyst was found to terminate the polymerization Subsequently, the coordinated species was cleaved using the Lewis base bicyclo[2.2.2]-1,4-diazaoctane, resulting in the reactivation of the catalyst. 2020 Society of Chem. Industry. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Recommanded Product: Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Recommanded Product: Isopropylisothiocyanate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

The effects of an innovative pulping technique of synchronously pulping and gelatinizing treatment on raw materials properties, oenological parameters, fermentation process, and flavor characteristics of glutinous rice wine was written by Zhu, Wenyou;Tie, Yu;Zhu, Zhenyu;Yang, Yuxia;Feng, Shao;Liu, Jun. And the article was included in Food Science and Biotechnology in 2022.Formula: C11H22O2 The following contents are mentioned in the article:

Liquid-state fermentation has been increasingly applied in the industrial glutinous rice wine (GRW) production However, products brewed by this emerging technique possess some deficiencies in flavor quality. Therefore, this study firstly developed and optimized an innovative pulping technique by the synchronously pulping and gelatinizing treatment (Process I) to improve GRW flavor quality, and then revealed the influences of Process I on raw materials properties, oenol. parameters, fermentation process, and flavor characteristics of GRW. Results show that Process I significantly (p < 0.05) enriched the soluble solid and crude protein content of glutinous rice milk by improving gelatinization degree and pulping efficiency, which consequently enhanced the microbial growth, glycolysis, and protein decomposition during the GRW fermentation process. GC-MS analyssis shows that Process I sequentially significantly (p < 0.05) enhanced the esterification and Ehrlich or Harrison pathway during the fermentation process. This contributed to a higher content of key ester and alc. compounds This study involved multiple reactions and reactants, such as Isopentyl hexanoate (cas: 2198-61-0Formula: C11H22O2).

Isopentyl hexanoate (cas: 2198-61-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Formula: C11H22O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Performance of alternative drying techniques on hop (Humulus lupulus L.) aroma quality: An HS-SPME-GC-MS-O and chemometrics combined approach was written by Su, Xueqian;Hurley, Ken;Xu, Zhiyuan;Xu, Yixiang;Rutto, Laban;O′Keefe, Sean;Scoggins, Holly;Yin, Yun. And the article was included in Food Chemistry in 2022.Formula: C8H16O2 The following contents are mentioned in the article:

Economically feasible and effective hop drying strategies are urgently needed to respond to the increasing number of microbrewers in US. In this study, hops were dried by dehydrator-drying (52 °C), oven-drying (52 °C) and freeze-drying (25 °C) until the final moisture content reached 8-10%. Headspace solid-phase microextraction-gas chromatog.-mass spectrometry-olfactometry (HS-SPME-GC-MS-O) was employed to analyze the aroma profiles in all dried hops. Me octanoate, β-myrcene, trans-α-bergamotene, linalool and geraniol were perceived as high-intensity aromas in all samples. Generally, dehydrator-dried hops contained the highest contents of aroma compounds among all groups, showing an increase of 5-23% and 6-37% when compared to freeze- and oven-dried hops, resp. Principal component and hierarchical cluster analyses also revealed aroma content differences from three drying methods. Dehydrator drying at 52 °C was therefore considered as an alternative and promising drying approach for smaller-scale hop processing, which can largely benefit regional producers and local craft breweries. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Formula: C8H16O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics