Tag: 100-200

Mass spectra of new heterocycles: XV. Fragmentation of 1-substituted 3-alkoxy-2-(propargylsulfanyl)- and 3-alkoxy-2-(allenylsulfanyl)-1H-pyrroles under electron impact was written by Klyba, L. V.;Tarasova, O. A.;Nedolya, N. A.. And the article was included in Russian Journal of Organic Chemistry in 2016.Name: Isopropylisothiocyanate The following contents are mentioned in the article:

The electron impact mass spectra of 1-R-substituted 3-alkoxy-2-(propargylsulfanyl)- and 3-alkoxy-2-(allenylsulfanyl)-1H-pyrroles (R = Me, i-Pr, s-Bu, Ph) have been studied for the first time. These compounds give rise to stable mol. ions whose primary fragmentation follows three competing pathways: cleavage of the C-O bonds with expulsion of alkyl radical, cleavage of the C-S bonds with formation of [M-C₃H₃]⁺ ions, and cleavage of the C-N bonds with synchronous hydrogen transfer to give odd-electron [M-C_nH_2n]+ · ion. The main fragmentation pathway of 2-(propargylsulfanyl) derivatives is cleavage of the C-S bond with formation of [M-C₃H₃]⁺ ion. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Name: 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. 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.Name: Isopropylisothiocyanate

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

Heat capacities and thermal diffusivities of some n-alkanoic acid methyl esters was written by Bogatishcheva, Nataliya S.;Faizullin, Mars Z.;Nikitin, Eugene D.. And the article was included in Journal of Chemical Thermodynamics in 2019.Product Details of 106-73-0 The following contents are mentioned in the article:

The heat capacities and thermal diffusivities of n-alkanoic acid Me esters C_nH_2n-1O₂CH₃ with n from 6 to 12 have been measured. The heat capacities have been measured in the temperature range from 303.15 K to 373.15 K; the measurements of thermal diffusivity have been carried out for a given Me ester from 303.15 K to the temperature at which a noticeable evaporation of the ester took place. The temperature dependencies of the heat capacities and thermal diffusivities have been approximated by a third-order and a first-order polynomial, resp. It has been shown that the dependence of the molar heat capacity on n (n = 1-14) at a temperature of 298.15 K is close to linear. 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 are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. 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 106-73-0

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

Organo-catalytic synthesis of oxathianes from isocyanides, isothiocyanates, and oxiranes was written by Keshtegar, Zahra;Heydari, Reza;Samzadeh-Kermani, Alireza. And the article was included in Journal of Sulfur Chemistry in 2021.Electric Literature of C4H7NS The following contents are mentioned in the article:

A novel three-component reaction between isocyanides, isothiocyanates, and oxiranes has been developed for the synthesis of substituted oxathianes I (R¹ = t-Bu, Cy, 2,6-Me₂C₆H₃; R² = i-Pr, Ph, 4-BrC₆H₄, etc.; R³ = Me, n-Bu, Me₂CHOCH₂, etc.; R⁴ = H, Me, Ph, 4-MeC₆H₄; R⁵ = H, Me, CH₃OCO; R⁶ = H, Me) in acceptable to good yields. The product of the reaction could be modulated by using either Bu₃P or tetrabutylphosphonium acetate (TBPAc) as an organocatalyst. This work offers an opportunity for the further implementation of isocyanides in library design. 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 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.Electric Literature of C4H7NS

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

Organo-catalytic synthesis of oxathianes from isocyanides, isothiocyanates, and oxiranes was written by Keshtegar, Zahra;Heydari, Reza;Samzadeh-Kermani, Alireza. And the article was included in Journal of Sulfur Chemistry in 2021.SDS of cas: 2253-73-8 The following contents are mentioned in the article:

A novel three-component reaction between isocyanides, isothiocyanates, and oxiranes has been developed for the synthesis of substituted oxathianes I (R¹ = t-Bu, Cy, 2,6-Me₂C₆H₃; R² = i-Pr, Ph, 4-BrC₆H₄, etc.; R³ = Me, n-Bu, Me₂CHOCH₂, etc.; R⁴ = H, Me, Ph, 4-MeC₆H₄; R⁵ = H, Me, CH₃OCO; R⁶ = H, Me) in acceptable to good yields. The product of the reaction could be modulated by using either Bu₃P or tetrabutylphosphonium acetate (TBPAc) as an organocatalyst. This work offers an opportunity for the further implementation of isocyanides in library design. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8SDS of cas: 2253-73-8).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. 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.SDS of cas: 2253-73-8

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

Amomum tsao-ko-Chinese Black Cardamom: Detailed Oil Composition and Comparison With Two Other Cardamom Species was written by Sim, Sherina;Tan, Su Kay;Kohlenberg, Birgit;Braun, Norbert A.. And the article was included in Natural Product Communications in 2019.Application of 112-14-1 The following contents are mentioned in the article:

Two Chinese black cardamom oils (Amomum tsao-ko) were analyzed using GC and GC/MS and compared to 2 Indian cardamom oils from the species Amomum subulatum and Elettaria cardamomum, resp. The main constituents of A. tsao-ko oils were eucalyptol, geranial, geraniol, trans-2,3,3A,7A-tetrahydro-1H-indene-4-carbaldehyde, (2E)-decenal, neral, and 4-indanecarbaldehyde. Special attention was given to the 1H-indene-carbaldehyes, which are frequently wrongly assigned in previous literature. A detailed odor evaluation of the oils was also carried out. In addition, composition variations of 28 main constituents of 8 E. cardamomum oils were investigated, taking various factors like origin, production methods, plant material, and drying stage into consideration. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Application of 112-14-1).

Octyl acetate (cas: 112-14-1) 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 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. Application of 112-14-1

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

Chemical composition and biological potential of Thymus Willdenowii Boiss. & Reut. essential oil was written by Zeghib, Assia;Calliste, Claude-Alain;Simon, Alain;Charfeddine, Rim;Aouni, Mahjoub;Duroux, Jean-Luc;Kabouche, Ahmed;Kabouche, Zahia. And the article was included in Natural Product Research in 2021.COA of Formula: C10H20O2 The following contents are mentioned in the article:

The fresh aerial parts of Thymus willdenowii Boiss. & Reut. (syn. Thymus hirtus Willd.) were hydrodistd. in a Clevenger type apparatus and analyzed by GC and GC-MS. 44 Components were identified representing 97.3%, with 1,8-cineole (34.62%), camphor (18.55%), α-pinene (9.46%) and camphene (5.38%) as the main components. T. willdenowii essential oil was not cytotoxic (CC₅₀ = 97.65μg/mL) towards Vero non-tumoral cells, exhibiting good antibacterial and antiproliferative (30.8 ± 3.1% inhibition) potentials against four tested pathogenic bacteria and Human colorectal cell line HT-29, resp. The essential oil did not show a DPPH radical scavenging activity, by ESR spectroscopy (ESR), and it lacks antiviral effect towards coxsackievirus B3. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1COA of Formula: C10H20O2).

Octyl acetate (cas: 112-14-1) 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.COA of Formula: C10H20O2

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

Base-Promoted [3+2] Cycloaddition of In Situ Formed Azaoxyallyl Cations with Isothiocyanates was written by Zhao, Hong-Wu;Zhao, Yu-Di;Liu, Yue-Yang;Du, Juan;Pang, Hai-Liang;Chen, Xiao-Qin;Song, Xiu-Qing;Feng, Ning-Ning. And the article was included in European Journal of Organic Chemistry in 2017.Product Details of 2253-73-8 The following contents are mentioned in the article:

The [3+2] cycloaddition of azaoxyallyl cations, in situ generated from α-halohydroxamates R¹R²CXC(O)NHOCH₂Ph [R¹ = H, Me, Cl; R² = Cl, Me, Ph; R¹R² = (CH₂)₅; X = Br, Cl], with isothiocyanates R²NCS (R² = Me, i-Pr, cyclohexyl, Ph, PhCH₂, etc.) proceeded smoothly in the presence of Na₂CO₃ and furnished the corresponding (Z)-3-(benzyloxy)-2-imino-thiazolidin-4-ones I in 25-99% yields. The structure of iminothiazolidinone I [R¹ = R² = Me; R³ = 1,5-Me₂-2-oxoindolin-3-yl] was confirmed by X-ray single-crystal structure anal. 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 also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. 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 2253-73-8

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

Effect of solvent composition on the formation of microtopographical siloxane-urethane surface was written by Majumdar, Partha;Webster, Dean C.. And the article was included in PMSE Preprints in 2005.Safety of Ethyl 3-ethoxypropanoate The following contents are mentioned in the article:

The effect of solvent composition on the formation of microtopog. surface domains in a crosslinked siloxane-urethane coating system was explored using five different solvents. A D-optimal mixture design study was carried out using Me n-amyl ketone (MAK), toluene, Et 3-ethoxypropionate (EEP), Bu acetate (BA) and iso-Pr alc. (IPA). The study revealed that presence of slow evaporating solvents MAK, EEP and absence of fast evaporating solvent IPA in the solvent composition with min. amount of BA would favor formation of a structured surface. Vapor pressure and solubility parameter of the solvent compositions for structured surface were lower than the vapor pressure and solubility parameter of the solvent compositions for non-structured surface. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Safety of Ethyl 3-ethoxypropanoate).

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

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

Synthesis, characterization, biological evaluation, and computational study of benzimidazole hybrid thiosemicarbazide derivatives was written by Acharya, Prachi T.;Bhavsar, Zeel A.;Jethava, Divya J.;Rajani, Dhanji P.;Pithawala, Edwin;Patel, Hitesh D.. And the article was included in Journal of Heterocyclic Chemistry.Product Details of 2253-73-8 The following contents are mentioned in the article:

The antimicrobial, antitubercular, antimalarial, and antioxidant properties of a series of benzimidazole hybrid thiosemicarbazide derivatives I (R = H, tert-Bu, cyclohexyl, Ph, 2-MeOC₆H₄, etc., R¹ = NO₂, Br) were investigated in vitro. The majority of the compounds studied have excellent antibacterial and antioxidant properties. In addition, an in silico investigation was conducted. By calculating ADME-Tox descriptors, all freshly synthesized mols. were shown to have outstanding pharmacokinetic properties, indicating that these derivatives could be used as a basis for the development of some novel active drugs. The SAR (structure-activity relationship) was also briefly described. 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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

Liquid viscosities for methyl hexanoate, methyl heptanoate, methyl caprylate, and methyl nonanoate at high pressures was written by Wang, Xiaojie;Zhu, Shanshan;Wang, Xiaopo. And the article was included in Journal of Chemical Thermodynamics in 2019.Recommanded Product: Methyl heptanoate The following contents are mentioned in the article:

The exptl. measurements for liquid viscosities of four fatty acid Me esters, including Me hexanoate, Me heptanoate, Me caprylate, and Me nonanoate, were carried out with a falling-cylinder viscometer. For the present measurement, the temperature ranges were from 292 K to 362 K and the pressure was reached to 30 MPa. The combined expanded relative uncertainty of the viscosity measurements was within 0.03 with 0.95 confidence level. The viscosity data for each studied esters were correlated by Andrade-Tait equation, and the average absolute relative deviation between the exptl. data and calculated values is 0.31%, 0.44%, 0.38%, and 0.25% for Me hexanoate, Me heptanoate, Me caprylate, and Me nonanoate, resp. The maximum absolute relative deviation is 1.09%, 1.28%, 1.28%, and 0.75%. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Recommanded Product: Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Recommanded Product: Methyl heptanoate

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