Tag: M.W=150-200

Rivera-Galvez, Francisco J.; Gonzalez-Ortiz, Luis J.; Lopez-Manchado, Miguel A.; Hernandez-Hernandez, Maria E.; Jasso-Gastinel, Carlos F. published the artcile< A methodology towards mechanical properties optimization of three-component polymers by the gradual variation of feed composition in semi-continuous emulsion-free radical polymerization>, SDS of cas: 1592-20-7, the main research area is emulsion radical polymerization mech property; gradient composition; methodology; multicomponent polymers; semi-continuous; three-component.

In this work, a new methodol. for the synthesis of three-component polymers (TCPs) was developed using a seeded, semi-continuous free-radical emulsion polymerization towards the optimization of the moduli-ultimate deformation performance and energy dissipation capacity for a styrene (S), Bu acrylate (BA), and 4-vinylbenzyl chloride (VBC) system. The three components were sequentially fed in pairs, varying feed composition along the conversion using S as the common monomer. To prepare a reference material, an industrial method was utilized with those monomers, using an equivalent global composition in a two-stage batch process (TS). Nanophase formation in the particles was observed by transmission electron microscopy (TEM), while the separation of the phases in the solid samples was observed by at. force microscopy (AFM). The changes in glass transition temperature were determined by differential scanning calorimetry (DSC) and dynamic mech. anal. (DMA). The latter was primarily used to compare mechanodynamic properties as a function of temperature for the two synthesis methods used. Thus, the higher toughness of the forced composition three-component polymeric materials was evaluated by means of their energy dissipation capacity, toughness, and stress-strain measurements at several temperatures

Polymers (Basel, Switzerland) published new progress about Glass transition temperature. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, SDS of cas: 1592-20-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Borra, Satheesh; Chae, Soyeon; Kim, Hun Young; Oh, Kyungsoo published the artcile< Continuous Flow Synthesis of 1,4-Benzothiazines Using Ambivalent Reactivity of (E)-β-Chlorovinyl Ketones: A Point of Reaction Control Enabled by Flow Chemistry>, Computed Properties of 17082-09-6, the main research area is benzothiazine preparation diastereoselective flow; chlorovinyl ketone dithiodianiline cyclization.

A continuous flow system to 1,4-benzothiazines I (R = H, OMe, Cl, Br, CF3; R1 = H; RR1 = -CH=CH-CH=CH-; R2 = n-Bu, Ph, Bn, 2-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)ethyl, etc.; R3 = Ph, 4-chlorophenyl, furan-2-yl, benzo[d][1,3]dioxol-5-yl, etc.) was developed using the point of reaction control, where the ambivalent (E)-β-chlorovinyl ketones R1CH2C(Cl)=CHC(O)R2 and 2,2′-dithiodianilines II were confined in a diffusion controlled flow setting. The successful segregation of reactive chem. species in a flow setting allowed more defined reaction pathways that are not feasible in traditional batch reaction conditions. The point of reaction control in flow systems helps to execute the reactions often plagued with the concurrent generation of multiple chem. species.

Organic Letters published new progress about Benzothiazines Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Computed Properties of 17082-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wu, Feng-Wei; Mao, Yang-Jie; Pu, Jun; Li, Huan-Le; Ye, Peng; Xu, Zhen-Yuan; Lou, Shao-Jie; Xu, Dan-Qian published the artcile< Ni-catalyzed deamidative fluorination of amides with electrophilic fluorinating reagents>, Application In Synthesis of 17082-09-6, the main research area is acyl fluoride preparation; amide selectfluor deamidative fluorination nickel catalyst.

Here, a Ni-catalyzed deamidative fluorination of diverse acylglutarimides I (R = 4-propylphenyl, 2-naphthyl, (2E)-3-phenylprop-2-en-1-yl, etc.) with electrophilic fluorinating reagents (selectfluor) has been described. Different types of amides including aromatic amides and olefinic amides I were well compatible, affording the corresponding acyl fluorides RC(O)F in good to excellent yields.

Organic & Biomolecular Chemistry published new progress about Acid fluorides Role: SPN (Synthetic Preparation), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Application In Synthesis of 17082-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Mishra, Aniket; Bhowmik, Arup; Samanta, Siddhartha; Sarkar, Writhabrata; Das, Sumit; Deb, Indubhusan published the artcile< Diastereoselective Spirocyclization of Benzoxazines with Nitroalkenes via Rhodium-Catalyzed C-H Functionalization/Annulation Cascade under Mild Conditions>, Computed Properties of 5153-70-8, the main research area is tetrahydrospirobenzooxazineindene diastereoselective preparation; benzoxazine nitroalkene diastereoselective spirocyclization rhodium catalyst.

A Rh(III)-catalyzed [3 + 2] annulation of benzoxazines with nitroolefins that proceeds via redox-neutral C-H functionalization has been demonstrated, leading to the novel class of spirocycles in a single step. The construction of three continuous stereogenic centers has been achieved starting from easily accessible achiral substrates in an atom-efficient manner under mild reaction conditions. A broad range of pharmaceutically relevant nitro substituted spirocyclic 2,3-dihydro-1,4-benzoxazine derivatives has been synthesized in good to excellent yields with high diastereoselectivity.

Organic Letters published new progress about Alkenes, nitro Role: RCT (Reactant), RACT (Reactant or Reagent). 5153-70-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H6ClNO2, Computed Properties of 5153-70-8.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Stoyanova-Slavova, Iva B.; Slavov, Svetoslav H.; Pearce, Bruce; Buzatu, Dan A.; Beger, Richard D.; Wilkes, Jon G. published the artcile< Partial least square and k-nearest neighbor algorithms for improved 3D quantitative spectral data-activity relationship consensus modeling of acute toxicity>, Electric Literature of 3964-57-6, the main research area is acute toxicity modeling QSDAR; 3D quantitative spectral data-activity relationship (QSDAR); Aquatic toxicology; Computational toxicology; Consensus modeling; Multivariate statistic.

A diverse set of 154 chems. that included US Food and Drug Administration-regulated compounds tested for their aquatic toxicity in Daphnia magna were modeled by a 3-dimensional quant. spectral data-activity relationship (3D-QSDAR). Two distinct algorithms, partial least squares (PLS) and Tanimoto similarity-based k-nearest neighbors (KNN), were used to process bin occupancy descriptor matrixes obtained after tessellation of the 3D-QSDAR space into regularly sized bins. The performance of models utilizing bins ranging in size from 2 ppm × 2 ppm × 0.5 Å to 20 ppm × 20 ppm × 2.5 Å was explored. Rigorous quality-control criteria were imposed: 100 randomized 20% hold-out test sets were generated and the average R2test of the resp. models was used as a measure of their performance, and a Y-scrambling procedure was used to identify chance correlations. A consensus between the best-performing composite PLS model using 0.5 Å × 14 ppm × 14 ppm bins and 10 latent variables (average R2test = 0.770) and the best composite KNN model using 0.5 Å × 8 ppm × 8 ppm and 2 neighbors (average R2test = 0.801) offered an improvement of about 7.5% (R2test consensus = 0.845). Projection of the most frequently occurring bins on the standard coordinate space indicated that the presence of a primary or secondary amino group-substituted aromatic systems-would result in an increased toxic effect in Daphnia. The presence of a second aromatic ring with highly electroneg. substituents 5 Å to 7 Å apart from the first ring would lead to a further increase in toxicity. Environ Toxicol Chem 2014;33:1271-1282.

Environmental Toxicology and Chemistry published new progress about Acute toxicity. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Electric Literature of 3964-57-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Sari, Sait; Unalan, Seda; Yilmaz, Mehmet published the artcile< Synthesis and characterization of unsaturated diacyl and alkyl-acyl piperazine derivatives>, COA of Formula: C9H7ClO, the main research area is unsaturated diacyl alkyl acyl piperazine preparation.

The aim of this study is to obtain new unsaturated piperazine compounds by the reaction of piperazine derivatives with acyl chlorides. Methacryloyl piperazine was synthesized from the reaction of methacrylic anhydride with piperazine. Few acyl chlorides were prepared by the reaction of thionyl chloride with carboxylic acids which were obtained as a result of the reaction of malonic acid and suitable aldehydes. The remaining acyl chlorides were synthesized by the reaction of thionyl chloride with carboxylic acids which were obtained from hydrolyzation of esters. Sym. diacyl piperazine compounds were obtained from the reaction of Methacryloyl piperazine with corresponding acyl chlorides. In addition, from the reaction of Methacryloyl piperazine and corresponding acyl chlorides, nonsym. diacyl piperazine compounds were synthesized in medium to good yields (63%-84%). Also, alkyl-acyl piperazine compounds were obtained from the reaction of allyl piperazine and cinnamyl piperazine with corresponding acyl chlorides.

Turkish Journal of Chemistry published new progress about Acid chlorides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, COA of Formula: C9H7ClO.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Du, Xiaochen; Yu, Jiafeng; Gong, Jing; Zaman, Manzoor; Pereshivko, Olga P.; Peshkov, Vsevolod A. published the artcile< Gold-Catalyzed Post-Ugi Cascade Transformation for the Synthesis of 2-Pyridones>, Electric Literature of 3240-10-6, the main research area is propiolic acid isocyanide aldehyde aniline Ugi one pot; bisamide preparation; furan alkyne cyclization ring opening cleavage gold catalyst diastereoselective; pyridone stereoselective cascade preparation.

A gold-catalyzed post-Ugi cascade transformation for the synthesis of 2-pyridones is described. The process involves furan-alkyne cyclization followed by furan ring-opening and cleavage of the isocyanide-originated fragment. The initially formed cis double bond can isomerize into a more stable trans double bond, e.g. I, upon prolonged exposure to a strong Bronsted acid. Thus, the overall strategy provides a viable access towards two types of 2-pyridones.

European Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Electric Literature of 3240-10-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wu, Chao; Wang, Jiang; Zhang, Xumu; Zhang, Runtong; Ma, Baode published the artcile< Highly chemoselective hydrogenation of cyclic imides to ω-hydroxylactams or γ-hydroxyamides catalyzed by iridium catalysts>, Electric Literature of 118-45-6, the main research area is hydroxylactam chemoselective preparation; hydroxyamide chemoselective preparation; cyclic imide hydrogenation iridium catalyst.

Several novel ferrocene-based PNN ligands were prepared, which were found to be highly effective catalysts (TON up to 50 000) for the homogeneous hydrogenation of cyclic imides with iridium. The hydrogenation mode could be finely tuned by tiny changes in the ligands. Using this straightforward strategy, a plethora of ω-hydroxylactams I [R = H, 4-Cl, 5-Cl; R1 = Me, Ph, Bn, etc.] and ω-hydroxyamides, e.g., II with different functional groups were obtained in high yield.

Organic Chemistry Frontiers published new progress about Amides, hydroxy Role: SPN (Synthetic Preparation), PREP (Preparation). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Electric Literature of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

An, Ning; Gong, Pisheng; Hou, Henglei; Chi, Weiya; Jin, Haibo; Zhao, Lan; Tan, Qiqi; Tang, Xu; Wang, Fei; Jin, Hongchao; Zhang, Rongyue published the artcile< Fabrication of macroporous microspheres with core-shell structure for negative chromatography purification of virus>, Application In Synthesis of 1592-20-7, the main research area is macroporous microsphere core shell structure chromatog purification virus; Avian influenza virus; Macroporous microsphere with core-shell structure; Negative chromatography; Purification of virus.

The macroporous microspheres with core-shell structure, based on a copolymer of 4-Vinylbenzyl chloride, glycidyl methacrylate, and ethylene glycol dimethacrylate, were fabricated through atom transfer radical polymerization suspension polymerization The microspheres showed 100-200 nm pores in shell and 500-900 nm pores in core. The shell was hydrophilic modified through grafting of poly(N-hydroxyethyl acrylamide) onto the shell surface for reducing adsorption of proteins. The core was coupled with a ligand of poly(ethylene imine) that could bind the proteins. Feedstock of avian influenza virus could be purified on these modified microspheres through neg. chromatog. Avian influenza virus cannot enter the core and was recovered from the flow-through, while other proteins with neg. charges were able to penetrate into the core and bind to the poly(ethylene imine) ligands. The dynamic binding capacity of proteins was higher on this medium (61 mg/mL) than the com. available resin (12 mg/mL, Capto Core 700).

Journal of Chromatography A published new progress about Chromatographic stationary phases. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Application In Synthesis of 1592-20-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Verbicky, John W. Jr.; Dellacoletta, Brent A.; Williams, Louella published the artcile< Palladium catalyzed decarbonylation of aromatic acyl chlorides>, Safety of 5-Chloroisobenzofuran-1,3-dione, the main research area is chlorophthalic anhydride; trimellitic anhydride acid chloride decarbonylation; decarbonylation aroyl chloride palladium catalyst; benzoyl chloride decarbonylation palladium catalyst; chlorobenzene.

At 265-360°, a variety of aromatic acyl chlorides can be rapidly decarbonylated to the corresponding aromatic chlorides in the gas phase or in the melt in moderate-to-excellent yield using 5% Pd/C, Pd(PPh3)4, or PdCl2 as a catalyst. E.g., trimellitic anhydride acid chloride in the melt with 5% Pd/C at 310° for 2 h gave 100% 4-chlorophthalic anhydride. 4-RC6H4COCl (R = H, Cl, CN, MeO, Me) with 5% Pd/C at 360° (gas phase) gave 18-98% 4-RC6H4Cl (R as before).

Tetrahedron Letters published new progress about Aryl chlorides Role: RCT (Reactant), RACT (Reactant or Reagent). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Safety of 5-Chloroisobenzofuran-1,3-dione.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics