Tag: 100-200

Reagent-Controlled Divergent Synthesis of 2-Amino-1,3-Benzoxazines and 2-Amino-1,3-Benzothiazines was written by Putta, V. P. Rama Kishore;Vodnala, Nagaraju;Gujjarappa, Raghuram;Tyagi, Ujjawal;Garg, Aakriti;Gupta, Sreya;Pujar, Prasad Pralhad;Malakar, Chandi C.. And the article was included in Journal of Organic Chemistry in 2020.Recommanded Product: 2253-73-8 The following contents are mentioned in the article:

A reagent-controlled chemoselective process has been devised for the synthesis of 4H-1,3-benzoxazines and related biol. important heterocycles in high yields under mild conditions. These scaffolds could be efficiently constructed using two different chemoselective reactions that rely on the choice of reagents and reaction conditions. The treatment of various 2-amino-arylalkyl alcs. with isothiocyanates afforded thiourea intermediates, which were reacted in situ with mol. iodine in the presence of triethylamine to give 2-amino-4H-1,3-benzoxazines, whereas the corresponding 2-amino-4H-1,3-benzothiazines were obtained by the reaction of thiourea intermediates in the presence of T3P (a mild cyclodehydrating agent) and triethylamine as the base. The described protocol represents the first example for the synthesis of 4H-1,3-benzoxazines via the dehydrosulfurization method using mol. iodine as the reagent. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Recommanded Product: 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. 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.Recommanded Product: 2253-73-8

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

Essential Oil of Cynophalla flexuosa and its Cytotoxicity, Antioxidant, and Anti-Acetylcholinesterase Effect was written by Carvalho, N. K. G.;Camilo, C. J.;Nonato, C. F. A.;Leite, D. O. D.;Rodrigues, F. F. G.;Alves, D. R.;Morais, S. M.;Costa, J. G. M.. And the article was included in Chemistry of Natural Compounds in 2021.Name: Isopropylisothiocyanate The following contents are mentioned in the article:

The interest in glucosinolate (GLS) hydrolysis products has grown due to their preventive potential against diseases by inducing a variety of physiol. functions, including antioxidant activity, enzymic regulation, apoptosis and cell cycl e control, thus inhibiting the development of various types of cancer. These are biol. inactive compounds which, when undergoing enzymic hydrolysis by β-thioglucosidase (myrosinase), produce isothiocyanates, nitriles, and thiocyanates, which act in the defense of plants against herbivores and pathogens. As these are found expressively in the Capparaceae family, the objective of the present study is to analyze the chem. composition and to evaluate the toxicol., anticholinesterase, and antioxidant potential of the essential oil of Cynophalla flexuosa (L.) J.Presl, the search for active substances of which offers a way to study the chem.-biol. contribution of the oils. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Name: Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Name: Isopropylisothiocyanate

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

Essential Oil of Cynophalla flexuosa and its Cytotoxicity, Antioxidant, and Anti-Acetylcholinesterase Effect was written by Carvalho, N. K. G.;Camilo, C. J.;Nonato, C. F. A.;Leite, D. O. D.;Rodrigues, F. F. G.;Alves, D. R.;Morais, S. M.;Costa, J. G. M.. And the article was included in Chemistry of Natural Compounds in 2021.Recommanded Product: Isopropylisothiocyanate The following contents are mentioned in the article:

The interest in glucosinolate (GLS) hydrolysis products has grown due to their preventive potential against diseases by inducing a variety of physiol. functions, including antioxidant activity, enzymic regulation, apoptosis and cell cycl e control, thus inhibiting the development of various types of cancer. These are biol. inactive compounds which, when undergoing enzymic hydrolysis by β-thioglucosidase (myrosinase), produce isothiocyanates, nitriles, and thiocyanates, which act in the defense of plants against herbivores and pathogens. As these are found expressively in the Capparaceae family, the objective of the present study is to analyze the chem. composition and to evaluate the toxicol., anticholinesterase, and antioxidant potential of the essential oil of Cynophalla flexuosa (L.) J.Presl, the search for active substances of which offers a way to study the chem.-biol. contribution of the oils. 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 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 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

Tug-of-War between Two Distinct Catalytic Sites Enables Fast and Selective Ring-Opening Copolymerizations was written by Wang, Jianqun;Zhu, Yinuo;Li, Maosheng;Wang, Yanchao;Wang, Xianhong;Tao, Youhua. And the article was included in Angewandte Chemie, International Edition in 2022.Application In Synthesis of Isopropylisothiocyanate The following contents are mentioned in the article:

Ring-opening copolymerizations have emerged as a powerful approach towards the creation of sustainable polymers. Typical H-bonding catalysts for ring-opening are subject to a single catalytic site. Here we describe a H-bond-donor/Lewis-acidic-boron organocatalyst featuring two distinct catalytic sites in one mol. The ring-opening copolymerization of epoxides with anhydride mediated by these modular, and tunable catalysts achieves high selectivity (>99% polyester selectivity) and markedly higher activity compared to either of the di-thiourea analogs or any combinations of them. Calculations and exptl. studies reveal that the superior catalytic performance arises from tug-of-war between two differentiated catalytic sites: thiourea pulls off the propagating chain-end from boron center, simultaneously enhancing the role of monomer activation and also nucleophilicity of the propagation intermediates. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Application In Synthesis of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Application In Synthesis of Isopropylisothiocyanate

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

Corresponding States Method for Estimation of Upper Flammability Limit Temperature of Chemical Compounds was written by Gharagheizi, Farhad;Ilani-Kashkouli, Poorandokht;Mohammadi, Amir H.. And the article was included in Industrial & Engineering Chemistry Research in 2012.Product Details of 763-69-9 The following contents are mentioned in the article:

The accuracy and predictability of predictive methods to determine chem. species flammability characteristics are critically important in the chem. industry. This work continued applying the gene expression programming math. strategy to modify existing thermophys. property correlations available in the literature to: optimize the number of independent parameters; amplify the generality; and improve accuracy and predictability. This work presented a simple corresponding states model to predict the upper flammability limit temperature for 1462 organic compounds from 76 chem. families. Correlation parameters included critical temperature and compound acentric factor. Obtained statistical parameters including average absolute relative deviation of results from the DIPPR 801 database values (1.7, 1.8, and 1.7% for training, optimization, and prediction sets, resp.) demonstrated improved accuracy of presented correlations. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Product Details of 763-69-9).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) 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.Product Details of 763-69-9

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

Upcycling of dynamic thiourea thermoset polymers by intrinsic chemical strengthening was written by Feng, Haijun;Zheng, Ning;Peng, Wenjun;Ni, Chujun;Song, Huijie;Zhao, Qian;Xie, Tao. And the article was included in Nature Communications in 2022.Recommanded Product: Isopropylisothiocyanate The following contents are mentioned in the article:

Thermoset polymers are indispensable but their environmental impact has been an ever-increasing concern given their typical intractability. Although concepts enabling their reprocessing have been demonstrated, their practical potential is limited by the deteriorated performance of the reprocessed materials. Here, we report a thiourea based thermoset elastomer that can be reprocessed with enhanced mech. properties. We reveal that the thiourea bonds are dynamic which leads to the reprocessibility. More importantly, they can undergo selective oxidation during high temperature reprocessing, resulting in significant chem. strengthening within certain reprocessing cycles. This is opposite to most polymers for which reprocessing typically results in material deterioration. The possibility of having materials with inherent reprocessing induced performance enhancement points to a promising direction towards polymer recycling. 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 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. Recommanded Product: Isopropylisothiocyanate

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

Upcycling of dynamic thiourea thermoset polymers by intrinsic chemical strengthening was written by Feng, Haijun;Zheng, Ning;Peng, Wenjun;Ni, Chujun;Song, Huijie;Zhao, Qian;Xie, Tao. And the article was included in Nature Communications in 2022.Quality Control of Isopropylisothiocyanate The following contents are mentioned in the article:

Thermoset polymers are indispensable but their environmental impact has been an ever-increasing concern given their typical intractability. Although concepts enabling their reprocessing have been demonstrated, their practical potential is limited by the deteriorated performance of the reprocessed materials. Here, we report a thiourea based thermoset elastomer that can be reprocessed with enhanced mech. properties. We reveal that the thiourea bonds are dynamic which leads to the reprocessibility. More importantly, they can undergo selective oxidation during high temperature reprocessing, resulting in significant chem. strengthening within certain reprocessing cycles. This is opposite to most polymers for which reprocessing typically results in material deterioration. The possibility of having materials with inherent reprocessing induced performance enhancement points to a promising direction towards polymer recycling. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Quality Control of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Quality Control of Isopropylisothiocyanate

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

Amphiphilic Star-Shaped Calix[4]resorcinarene as Stationary Phase for Capillary Gas Chromatography was written by Sun, Tao;Li, Bin;Li, Yan;Zhao, Xinyu;Song, Qianqian;Jiang, Xingxing;Shuai, Xiaomin;Li, Youyang;Cai, Zhiqiang;Hu, Shaoqiang. And the article was included in Chromatographia in 2019.Product Details of 106-73-0 The following contents are mentioned in the article:

This work describes the separation performance of the amphiphilic star-shaped calix[4]resorcinarene (C4A-CL)(I) as the stationary phase for capillary gas chromatog. (GC). The statically coated C4A-CL capillary column exhibited medium polarity and high column efficiency of 3877 plates m^-1 determined by naphthalene at 120 °C. Importantly, the C4A-CL column exhibited extremely high resolving capability for aliphatic analytes with varying polarity, including n-alkanes, esters, ketones, alcs., and bromoalkanes. In addition, the C4A-CL column exhibited high selectivity and resolving capability for positional, structural and cis-/trans-isomers. Among them, the C4A-CL column displayed advantageous resolving capability over the com. DB-17 column for aromatic amine isomers. Moreover, it was applied for the determination of isomer impurities in real samples, showing good potential in GC applications. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Product Details of 106-73-0).

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. Polyesters are important plastics, with monomers linked by ester moieties. 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.Product Details of 106-73-0

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

Interior air pollution in automotive cabins by volatile organic compounds diffusing from interior materials: I. Survey of 101 types of Japanese domestically produced cars for private use was written by Yoshida, Toshiaki;Matsunaga, Ichiro;Tomioka, Kimiko;Kumagai, Shinji. And the article was included in Indoor and Built Environment in 2006.Electric Literature of C7H14O3 The following contents are mentioned in the article:

The types and concentrations of organic compounds in the interior air of 101 different types of Japanese domestically produced private-use cars were examined All the vehicles had been registered in the summer season as new cars and were <3 years old. The airborne compounds in the cabins were collected for 24 h under static condition with the engine stopped and the windows, doors, and vents closed. A total of 275 organic compounds, including many aliphatic hydrocarbons and aromatic hydrocarbons, were identified, and 242 of them could be quantitated for each cabin. The sum of the concentrations of 241 compounds excluding formaldehyde was approx. 600 μg/m^-3 as a median, ranging 136-3968 μg/m^-3 for the tested cars. The findings demonstrated that the air in the cabin of these cars was contaminated by high concentrations of a large variety of organic compound diffusing from the interior materials. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Electric Literature of C7H14O3).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Electric Literature of C7H14O3

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

A combinatorial approach for the discovery of drug-like inhibitors of 15-lipoxygenase-1 was written by van der Vlag, Ramon;Guo, Hao;Hapko, Uladzislau;Eleftheriadis, Nikolaos;Monjas, Leticia;Dekker, Frank J.;Hirsch, Anna K. H.. And the article was included in European Journal of Medicinal Chemistry in 2019.Application of 763-69-9 The following contents are mentioned in the article:

Human 15-lipoxygenase-1 (15-LOX-1) is a mammalian lipoxygenase which plays an important regulatory role in several CNS and inflammatory lung diseases. To further explore the role of this enzyme in drug discovery, novel potent inhibitors with favorable physicochem. properties are required. In order to identify such new inhibitors, we established a combinatorial screening method based on acylhydrazone chem. This represents a novel application of combinatorial chem. focusing on the improvement of physicochem. properties, rather than on potency. This strategy allowed us to efficiently screen 44 reaction mixtures of different hydrazides and our previously reported indole aldehyde core structure, without the need for individual synthesis of all possible combinations of building blocks. Our approach afforded three new inhibitors with IC₅₀ values in the nanomolar range and improved lipophilic ligand efficiency. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Application of 763-69-9).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Application of 763-69-9

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