Tag: 100-200

Safety and technological issues of dry fermented sausages produced without nitrate and nitrite was written by Tabanelli, Giulia;Barbieri, Federica;Soglia, Francesca;Magnani, Rudy;Gardini, Gabriele;Petracci, Massimiliano;Gardini, Fausto;Montanari, Chiara. And the article was included in Food Research International in 2022.Name: Oct-1-en-3-ol This article mentions the following:

The aim of this work was to investigate the possibility to industrially produce fermented sausages without the addition of nitrate and nitrite. Indeed, despite their antimicrobial effect and multiple technol. roles, an increasing pressure for their removal has recently raised. To achieve this goal while maintaining an acceptable final product quality, we deeply modified the whole process, that was carried out at 10-15°C (i.e., temperatures lower than traditional Mediterranean products) and by using bioprotective starter cultures at high concentrations (7 log CFU/g) to lead the fermentation Different glucose amounts (0.2 or 0.4% weight/weight) were also tested to optimize the process. The results showed no significant differences between the control (with nitrate/nitrite) and the sausages without preservatives in terms of aw (value range 0.908-0.914), weight loss (about 38% in all samples), lactic acid bacteria (value range 8.1-8.3 log CFU/g) and coagulase neg. cocci (value range 6.8-7.1 log CFU/g). The amount of sugar affected the final characteristics of sausages. Indeed, in the absence of curing salts, lower sugar concentration resulted in better textural features (reduced hardness and gumminess) and lower oxidation (TBARS values 0.80 vs. 1.10 mg MDA/kg of meat product in samples with 0.2% or 0.4% of glucose, resp.). Finally, challenge tests evidenced the inability of selected strains of Listeria innocua, Salmonella enterica sub. enterica and Clostridium botulinum to grow, under the adopted conditions, in fermented sausages. This research highlighted that nitrate/nitrite removal from these meat products requires accurate technol. changes to guarantee the final quality. In the experiment, the researchers used many compounds, for example, Oct-1-en-3-ol (cas: 3391-86-4Name: Oct-1-en-3-ol).

Oct-1-en-3-ol (cas: 3391-86-4) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Name: Oct-1-en-3-ol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

A Convenient Esterification of N-Heteroarene Methanols via C-CN Bond Cleavage of Benzoyl Cyanides as Acylating Sources was written by Su, Fangyao;Zhao, Qianrui;Wang, Mengzhuo;Zhao, Mingzhang;Ren, Yihe;Zhu, Binghan;Chen, Haoran;Lai, Miao;Zhao, Mingqin. And the article was included in ChemistrySelect in 2022.Electric Literature of C7H9NO This article mentions the following:

An efficient and straightforward methodol. for the esterification of various N-heteroarene methanols using benzoyl cyanides as acylating sources through a simply mixing conditions has been reported. The acyl groups were in-situ generated via chemoselective C-CN bond cleavage to give the N-heteroarenemethyl esters. This process features in readily accessible starting materials and offers an easy operational procedure, and broad substrate scope with excellent selectivity. In the experiment, the researchers used many compounds, for example, 6-Methyl-2-pyridinemethanol (cas: 1122-71-0Electric Literature of C7H9NO).

6-Methyl-2-pyridinemethanol (cas: 1122-71-0) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Electric Literature of C7H9NO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Natural cellulose fibers from Quinoa wastes reinforced carbon nanotube/ZnO bio-nanocomposite as a novel recyclable catalyst for oxidation reaction was written by Naeimi, Atena;Khoshkam, Sibgol;Eslaminejad, Touba. And the article was included in Polymer Bulletin (Heidelberg, Germany) in 2022.Computed Properties of C7H6Cl2O This article mentions the following:

Cellulose fibers from Quinoa wastes were successfully incorporated with multi-walled carbon nanotubes/ZnO (MWCNTs/ZnO). Manganese complex was supported on natural cellulose and reacted with MWCNT/Zn bio-nanocomposite to have MWCNT/ZnO/Mn complex@oxidized cellulose. This novel bio-nanocomposite was characterized by SEM, TEM, FT-IR, TGA, and EDS. The catalytic activity of this composite was considered on the oxidation of alcs. High conversion and selectivities of desired aldehyde and ketone products were obtained applying H2O2 and under solvent-free conditions. This heterogeneous catalyst was easily recycled and reused eight times without any significant catalytic activities and stabilities. In the experiment, the researchers used many compounds, for example, (2,4-Dichlorophenyl)methanol (cas: 1777-82-8Computed Properties of C7H6Cl2O).

(2,4-Dichlorophenyl)methanol (cas: 1777-82-8) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Computed Properties of C7H6Cl2O

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Access to Optically Active Aryl Halohydrins Using a Substrate-Tolerant Carbonyl Reductase Discovered from Kluyveromyces thermotolerans was written by Xu, Guo-Chao;Yu, Hui-Lei;Zhang, Xiao-Yan;Xu, Jian-He. And the article was included in ACS Catalysis in 2012.Recommanded Product: 120121-01-9 This article mentions the following:

By genome data mining, a carbonyl reductase tool box was designed and developed for chiral alc. synthesis. On the basis of systematic comparison of the specific activity and substrate tolerance toward α-chloroacetophenone among reductases in this tool box, KtCR, a highly substrate-/product-tolerant carbonyl reductase from Kluyveromyces thermotolerans, was identified. The reduction of a series of substituted aryl ketones was investigated using this newly mined biocatalyst. Almost all of the ketones tested were asym. reduced into corresponding chiral alcs. in 99% ee. Substrates with substituents adjacent to the carbonyl group or those with substituents on the para position of the Ph ring were easier to reduce. For α-choloacetophenone as a representative substrate, as much as 154 g/L (1.0 M) of the substrate was asym. reduced within merely 12 h by lyophilized cells of Escherichia coli/pET28-KtCR, resulting in an isolated yield of 92%, an enantiopurity of >99% ee, and a total turnover number of 5000, which was five times higher than the highest record reported so far. These results indicate the great potential of KtCR in practical synthesis of valuable aryl halohydrins as versatile chiral synthons. In the experiment, the researchers used many compounds, for example, (R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9Recommanded Product: 120121-01-9).

(R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Recommanded Product: 120121-01-9

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Apiaceae essential oil nanoemulsions as effective wheat protectants against five arthropod pests was written by Kavallieratos, Nickolas G.;Nika, Erifili P.;Skourti, Anna;Perinelli, Diego Romano;Spinozzi, Eleonora;Bonacucina, Giulia;Cappellacci, Loredana;Morshedloo, Mohammad Reza;Canale, Angelo;Benelli, Giovanni;Maggi, Filippo. And the article was included in Industrial Crops and Products in 2022.Application of 499-75-2 This article mentions the following:

The essential oils (EOs) produced by a number of Apiaceae species are well known for their insecticidal efficacy against a wide spectrum of insects, including vectors, stored product and agricultural pests. In the real world, rawly formulated EOs are scarcely effective due to their low chem. stability, limited persistence into the environment, and poor hydrophilicity. Therefore, for practical applications they need to be encapsulated using nanocarriers. In the present study, we evaluated two novel EO-based nanoemulsions (NEs) derived from Pimpinella anisum and Trachyspermun ammi, two plants with documented insecticidal effectiveness, for the management of stored product insects causing economic damages, including Tribolium castaneum, Tribolium confusum, Tenebrio molitor, Trogoderma granarium adults or larvae, and Acarus siro adults or nymphs. The NEs were prepared by a high-pressure homogenization procedure and determined according to the distribution of particle size through dynamic light scattering. Pimpinella anisum EO resulted mainly dominated by the phenylpropanoid (E)-anethole, while T. ammi EO was mainly composed of thymol, p-cymene, and γ-terpinene. Each EO-based NE was tested at two concentrations (500 and 1000 ppm) on stored wheat. We evaluated mortality values of the arthropod pests after 4 h, 8 h, and 16 h, and daily from 1 to 7 days. Complete mortality was achieved for T. castaneum larvae on wheat sprayed with 1000 ppm of 4% (weight/weight) P. anisum EO-based NE after 6 days of exposure. Similarly, the 8% (weight/weight) T. ammi EO-based NE killed 100.0% of the tested T. confusum larvae after 7 days to 1000 ppm. When A. siro adults were exposed to 1000 ppm of the 8% (weight/weight) T. ammi EO-based NE, 89.4% of the tested individuals were killed after 7 days. Binary EO-based NE combination toxicity tests were also carried out. Almost all T. molitor adults (97.8%) died after 7 days to 1000 ppm of 3% (weight/weight) T. ammi + 3% (weight/weight) P. anisum EO-based NE. The 3% (weight/weight) T. ammi + 3% (weight/weight) P. anisum EO-based NE killed 98.6% of T. granarium adults after 7 days at 1000 ppm. Overall, the tested Apiaceae EO-based NEs exhibited relevant pesticidal efficacy under short exposure intervals, therefore they could be taken into account as auxiliary management tools towards the sustainable protection of durable commodities in storages. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2Application of 499-75-2).

5-Isopropyl-2-methylphenol (cas: 499-75-2) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Application of 499-75-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cluster [Re₃S₅(Dppe)₃]⁺ and its oxidation to [Re₃S₄(SO₂)(Dppe)₃]⁺ was written by Petrov, P. A.;Ryzhikov, M. R.;Kuratieva, N. V.;Konchenko, S. N.. And the article was included in Russian Journal of Coordination Chemistry in 2016.Product Details of 29364-29-2 This article mentions the following:

The reaction of cluster [Re₃S₄(Dppe)₃Br₃]Br with sodium tert-Bu thiolate affords trinuclear cationic cluster [Re₃S₅(Dppe)₃]Br (1). The oxidation of cluster 1 with air gives [Re₃S₄(SO₂)(Dppe)₃]Cl (2), which is characterized by x-ray diffraction anal. in the form of solvate 2·3.5CH₂Cl₂ (CIF file CCDC 1401732). The DFT calculations indicate the triplet ground state of the [Re₃S₅(Dppe)₃]⁺ cation and a significant spin d. on the equatorial sulfide ligands, favoring the oxidation of the cluster. In the experiment, the researchers used many compounds, for example, Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2Product Details of 29364-29-2).

Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Product Details of 29364-29-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Heterogeneous Catalytic Method for the Copper(II)-Catalysed Addition of H-Phosphinates and Secondary Phosphine Oxides to Phenylacetylene was written by Juhasz, Kinga;Varga, Bence;Bagi, Peter;Hell, Zoltan. And the article was included in Catalysis Letters in 2022.SDS of cas: 2216-51-5 This article mentions the following:

Copper(II) on 4 Å mol. sieve was found to be an efficient heterogeneous catalyst in the addition of different H-phosphinates and secondary phosphine oxides to phenylacetylene. All hydrophosphinylation reactions were completely regioselective, as only β-isomers were formed, and the E-alkenylphosphinates and E-alkenylphosphine oxides were synthesized in moderate to excellent yields. The catalyst could be reused multiple times in the reaction. In the experiment, the researchers used many compounds, for example, (1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol (cas: 2216-51-5SDS of cas: 2216-51-5).

(1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol (cas: 2216-51-5) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.SDS of cas: 2216-51-5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

A new chiral sulfinyl-NH-pyridine ligand for Ir-catalyzed asymmetric transfer hydrogenation reaction was written by Tang, Lei;Wang, Qiwei;Wang, Juanjuan;Lin, Zechao;Wang, Xiaobei;Cun, Linfeng;Yuan, Weicheng;Zhu, Jin;Liao, Jian;Deng, Jingen. And the article was included in Tetrahedron Letters in 2012.Application In Synthesis of (S)-1-(2-Fluorophenyl)ethanol This article mentions the following:

A new flexible C₁-sym. tridentate ligand (S)-N-(2-(tert-butylsulfinyl)benzyl)-1-(pyridin-2-yl)methanamine (I) was successfully prepared and utilized as a chiral ligand for Ir(I)-catalyzed ATH (asym. transfer hydrogenation) reactions. Without any cooperation of other chiral centers, encouraging ee and conversion values have been achieved, which provides a better understanding of these types of ligands and a new strategy to develop new high-efficiency chiral catalysts for asym. reactions. In the experiment, the researchers used many compounds, for example, (S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4Application In Synthesis of (S)-1-(2-Fluorophenyl)ethanol).

(S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Application In Synthesis of (S)-1-(2-Fluorophenyl)ethanol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Synthesis of 6-alkyl-2-pyridinecarboxaldehyde derivatives and their Schiff bases was written by Qiu, Chuan-jiang;Gao, Yu;Zhang, Yue-cheng;Zhang, Yi-ning;Zhao, Ji-quan. And the article was included in Hecheng Huaxue in 2009.Computed Properties of C7H9NO This article mentions the following:

2-Methyl-6-alkylpyridine derivatives were obtained from pyridinecarbonyl chlorides and 2-propanamine by amidation and heterocyclization. 6-Alkyl-2-pyridinecarboxaldehyde derivatives were prepared by a four-step synthesis and further condensation of said aldehydes with benzenamine derivatives provided the above-mentioned target compounds [i.e., N-[[6-alkyl-2-pyridinyl]methylene]benzenamine derivatives] and their structures were confirmed by UV-Vis, NMR, FT-IR, MS. In the experiment, the researchers used many compounds, for example, 6-Methyl-2-pyridinemethanol (cas: 1122-71-0Computed Properties of C7H9NO).

6-Methyl-2-pyridinemethanol (cas: 1122-71-0) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Computed Properties of C7H9NO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Asymmetric reduction of halo-substituted arylalkanones with Rhizopus arrhizus was written by Salvi, Neeta A.;Chattopadhyay, Subrata. And the article was included in Tetrahedron: Asymmetry in 2008.HPLC of Formula: 171032-87-4 This article mentions the following:

The Rhizopus arrhizus-mediated asym. reduction of various haloaryl alkanones furnished the resp. (S)-carbinols, e.g., I, with good to excellent enantioselectivities. It was found that the reaction course was primarily governed by the relative position of the halogen with respect to the carbonyl group, and its size. The relative order of efficacies of the nature of the halogen and their substitution pattern were Br > Cl > F and o- > p- > m-. The ortho-effect was the most predominant factor in the stereochem. outcome of the reaction, which was also confirmed with some non-halo-substituted acetophenones. In the experiment, the researchers used many compounds, for example, (S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4HPLC of Formula: 171032-87-4).

(S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.HPLC of Formula: 171032-87-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts