Tag: M.W=150-200

Cai, Zhengyan; Wen, Yingling; Zhang, Xuli; Liu, Zhenren; Hao, Qun published the artcile< Preparation and structural confirmation of the related substances of rivaroxaban>, Computed Properties of 31166-29-7, the main research area is rivaroxaban related substance synthesis.

According to the structural characteristics of rivaroxaban and its synthetic process, eight related substances: 5-chloro-N-[[2-oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1,3-oxazolidin-5-yl]methyl]thiophene-2-carboxamide (A), N-[[(5S)-2-oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1, 3-oxazolidin-5-yl]methyl]thiophene-2-carboxamide (B), 4,5-dichloro-N-[[(5S)-2-oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1,3-oxazolidin-5-yl]methyl] thiophene-2-carboxamide (C), (S)-2-[[[2-oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1,3-oxazolidin-5-yl] methyl] carbamoyl] benzoic acid (D), N1, N2-bis-[[(S)-2-oxo-3-[4-(3-oxo-4-morpholinyl) phenyl]-1, 3-oxazolidin-5-yl] methyl] phthalamide (E), 5-chloro-N-methylthiophene-2-carboxamide (F), 5-chloro-N,N-dimethylthiophene-2-carboxamide (G) and 1,3-bis-[[(S)-2-oxo-3-[4-(3-oxo-4-morpholinyl)phenyl]-1,3-oxazolidin-5-yl] methyl] urea (H), were synthesized and confirmed by 1H NMR and MS. These substances were taken as the references for the quality control of rivaroxaban.

Zhongguo Yiyao Gongye Zazhi published new progress about 31166-29-7. 31166-29-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C5H2Cl2O2S, Computed Properties of 31166-29-7.

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

Rubio-Cervilla, Jon; Frisch, Hendrik; Barner-Kowollik, Christopher; Pomposo, Jose A. published the artcile< Synthesis of Single-Ring Nanoparticles Mimicking Natural Cyclotides by a Stepwise Folding-Activation-Collapse Process>, Safety of 1-(Chloromethyl)-4-vinylbenzene, the main research area is chloromethylstyrene styrene copolymer cyclized azidated CuAAC crosslinked cyclotide mimetic; RAFT polymerization; cyclic polymers; photochemistry; single chain folding; single chain nanoparticles.

Cyclotides are small cyclic polypeptides found in a variety of organisms, ranging from bacteria to plants. Their ring structure endows those polypeptides with specific properties, such as improved stability against enzymic degradation Optimal cyclotide activity is often observed only in the presence of intra-ring disulfide bonds. Synthesis of soft nano-objects mimicking the conformation of natural cyclotides remains challenging. Here, a new class of natural cyclotide mimics synthesized by a stepwise folding-activation-collapse process at high dilution starting from simple synthetic precursor polymers is established. The initial folding step is carried out by a photoactivated hetero Diels-Alder (HDA) ring-closing reaction, which is accompanied by chain compaction of the individual precursor polymer chains as determined by size exclusion chromatog. (SEC). The subsequent activation step comprises a simple azidation procedure, whereas the final collapse step is driven by CuAAC in the presence of an external crosslinker, providing addnl. compaction to the final single-ring nanoparticles (SRNPs). The unique structure and compaction degree of the SRNPs is established via a detailed comparison with conventional single-chain nanoparticles (SCNPs) prepared exclusively by chain collapse from the exact same precursor polymer (without the prefolding step). The stepwise folding-activation-collapse approach opens new avenues for the preparation of artificial cyclotide mimetics.

Macromolecular Rapid Communications published new progress about Azide-alkyne 1,3-dipolar cycloaddition reaction. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Safety of 1-(Chloromethyl)-4-vinylbenzene.

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

Ding, Mengxian; Li, Haiying; Yang, Zhenhua; Li, Yuesheng; Zhang, Jin; Wang, Xuqiang published the artcile< Comparative study on polyimides from 3,3'- and 4,4'-linked diphthalic anhydride>, Product Details of C8H3ClO3, the main research area is polyimide preparation property.

1,4-Bis(2,3-dicarboxyphenoxy)benzene dianhydride, 1,4-bis(3,4-dicarboxyphenoxy)benzene dianhydride, bis(2,3-dicarboxyphenoxy) sulfide dianhydride, bis(3,4-dicarboxyphenoxy) sulfide dianhydride, and 2,3,3′,4′-tetracarboxydiphenyl sulfide dianhydride were synthesized from 3-chlorophthalic anhydride and 4-chlorophthalic anhydride. Bis(2,3-dicarboxyphenyl) sulfone and bis(3,4-dicarboxyphenyl) sulfone were obtained by the oxidation of the corresponding bis(dicarboxyphenyl) sulfide by hydrogen peroxide. The polyimides from the dianhydrides mentioned above and 4,4′-oxydianiline were prepared The properties, such as dynamic mech. behavior, thermooxidative stability, stress-strain behavior, chem. resistance, and permeability to some gases have been in investigated for the isomeric polyimides.

Journal of Applied Polymer Science published new progress about Polyethers, polyimide- Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Product Details of C8H3ClO3.

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

Shi, Chengcheng; Guo, Lin; Gao, Han; Luo, Mengqi; Yang, Chao; Xia, Wujiong published the artcile< Highly Diastereoselective Synthesis of γ-Lactams Enabled by Photoinduced Deaminative [3 + 2] Annulation Reaction>, Category: chlorides-buliding-blocks, the main research area is gamma lactam diastereoselective preparation; aminopyridinium alkene photochem cycloaddition.

The photoinitiated deaminative [3 + 2] annulation reaction of N-aminopyridinium salts with alkenes for the synthesis of functionalized γ-lactams is described. This transformation shows good functional group tolerance as well as excellent diastereoselectivity. Preliminary studies suggest that the employed N-aminopyridinium salts generate the key amidyl radical intermediates through N-N bond cleavage via a photoinduced single-electron transfer (SET) process. The amidyl radical species would add to the double bond of alkenes, followed by a radical-mediated annulation process, to afford the desired γ-lactams.

Organic Letters published new progress about [3+2] Cycloaddition reaction catalysts (photochem.). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Category: chlorides-buliding-blocks.

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

Wan, Zi-juan; Yuan, Xiao-feng; Luo, Jun published the artcile< Visible light induced 3-position-selective addition of arylpropiolic acids with ethers via C(sp3)-H functionalization>, Application In Synthesis of 3240-10-6, the main research area is arylpropiolic acid ether photochem diastereoselective regioselective addition reaction; aryl acrylic acid preparation.

An intriguing and mild method for visible light induced regioselective addition of arylpropiolic acids by attacking exclusively at the 3-position with cyclic/acyclic ethers was developed. A variety of 3,3-bis-substituted acrylic acids were successfully obtained in moderate to excellent yields. A plausible reaction mechanism involving an energy transfer induced radical addition in the presence of visible light and photocatalyst was proposed.

Organic & Biomolecular Chemistry published new progress about Aryl iodides Role: RCT (Reactant), RACT (Reactant or Reagent). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Application In Synthesis of 3240-10-6.

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

Aggarwal, Kanika; Bsoul, Saja; Douglin, John C.; Li, Songlin; Dekel, Dario R.; Diesendruck, Charles E. published the artcile< Alkaline Stability of Low Oxophilicity Metallopolymer Anion-Exchange Membranes>, Recommanded Product: 1-(Chloromethyl)-4-vinylbenzene, the main research area is oxophilicity metallopolymer anion exchange membrane alk stability; anion exchange membranes; fuel cells; gold; metallopolymers; oxophilicity.

Anion-exchange membrane fuel cells (AEMFCs) are promising energy conversion devices due to their high efficiency. Nonetheless, AEMFC operation time is currently limited by the low chem. stability of their polymeric anion-exchange membranes. In recent years, metallopolymers, where the metal centers assume the ion transport function, have been proposed as a chem. stable alternative. Here we present a systematic study using a polymer backbone with side-chain N-heterocyclic carbene (NHC) ligands complexed to various metals with low oxophilicity, such as copper, zinc, nickel, and gold. The golden metallopolymer, using the metal with the lowest oxophilicity, demonstrates exceptional alk. stability, far superior to state-of-the-art quaternary ammonium cations, as well as good in situ AEMFC results. These results demonstrate that judiciously designed metallopolymers may be superior to purely organic membranes and provides a scientific base for further developments in the field.

Chemistry – A European Journal published new progress about Anion exchange membranes. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Recommanded Product: 1-(Chloromethyl)-4-vinylbenzene.

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

Spitz, Cedric; Matteudi, Melanie; Tintori, Guillaume; Broggi, Julie; Terme, Thierry; Vanelle, Patrice published the artcile< Metal-Free Addition of Benzyl Halides to Aldehydes Using Super Electron Donors: Access to 3,4-Dihydroisocoumarins and 1,2-Diarylethanols>, Reference of 611-19-8, the main research area is benzyl halide aldehyde super electron donor addition; dihydroisocoumarin preparation; diarylethanol preparation.

We report here the intermol. metal-free addition reaction of functionalized benzyl halides to aldehydes using a super electron donor (SED). The metal-free and mild conditions allowed the formation of 3,4-dihydroisocoumarins and 1,2-diarylethanols with unprecedented functional group tolerance.

Journal of Organic Chemistry published new progress about Addition reaction. 611-19-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H6Cl2, Reference of 611-19-8.

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

Sang, Dayong; Tian, Juan; Tu, Xiaodong; He, Zhoujun; Yao, Ming published the artcile< Cleavage of Catechol Monoalkyl Ethers by Aluminum Triiodide-Dimethyl Sulfoxide>, SDS of cas: 16766-30-6, the main research area is catechol preparation; monoalkyl ether catechol demethylation aluminum triiodide dimethyl sulfoxide.

Using eugenol and vanillin as model substrates, a practical method is developed for the cleavage o-hydroxyphenyl alkyl ethers. Aluminum oxide iodide (O=AlI), generated in situ from aluminum triiodide and DMSO, is the reactive ether cleaving species. The method is applicable to catechol monoalkyl ethers as well as normal Ph alkyl ethers for the removal of Me, Et, iso-Pr, and benzyl groups. A variety of functional groups such as alkenyl, allyl, amide, cyano, formyl, keto, nitro, and halogen are well tolerated under the optimum conditions. Partial hydrodebromination was observed during the demethylation of 4-bromoguaiacol, and was resolved using excess DMSO as an acid scavenger. This convenient and efficient procedure would be a practical tool for the preparation of catechols.

Synthesis published new progress about C-O bond cleavage. 16766-30-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H7ClO2, SDS of cas: 16766-30-6.

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

Hao, Wenyan; Xu, Zhaotao; Zhou, Zebiao; Cai, Mingzhong published the artcile< Recyclable Heterogeneous Palladium-Catalyzed Cyclocarbonylation of 2-Iodoanilines with Acyl Chlorides in the Biomass-Derived Solvent 2-Methyltetrahydrofuran>, HPLC of Formula: 17082-09-6, the main research area is green palladium catalyzed cyclocarbonylation iodoaniline acyl chloride benzoxazinone synthesis.

A highly efficient, green palladium-catalyzed cyclocarbonylation of 2-iodoanilines with acyl chlorides has been developed that proceeds smoothly in a biomass-derived solvent 2-methyltetrahydrofuran with N,N-diisopropylethylamine as base at 100°C under 20 bar of carbon monoxide using an 2-aminoethylamino-modified MCM-41-anchored palladium acetate complex [2N-MCM-41-Pd(OAc)2] as a heterogeneous catalyst, yielding a wide variety of 2-substituted 4H-3,1-benzoxazin-4-one derivatives in good to excellent yields. This supported palladium catalyst could be facilely obtained by a two-step procedure from easily available starting materials and readily recovered via a simple filtration process and recycled at least 8 times without any apparent decrease in catalytic efficiency. The developed methodol. not only avoids the use of toxic solvents such as THF and DMF but also solves the basic problem of expensive palladium catalyst recovery and reuse and prevents effectively palladium contamination of the desired product.

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

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

Huang, Lingyu; Xie, Rongrong; Wen, Chaoying; Yang, Yanyan; Wang, Yiwen; Ren, Shiyan; Huang, Bin; Li, Shiqing published the artcile< Decarbonylative/decarboxylative [4 + 2] annulation of phthalic anhydrides and cyclic iodoniums towards triphenylenes>, Related Products of 118-45-6, the main research area is phthalic anhydride diaryliodonium salt palladium catalyst decarbonylative decarboxylative cyclization; triphenylene preparation.

A palladium-catalyzed decarbonylative/decarboxylative [4 + 2] annulation of phthalic anhydrides with cyclic diaryliodonium salts to synthesize triphenylenes was developed. The reaction showed broad substrate scope with a high yield of up to 99%, and it provided an efficient and fast way to access functionalized triphenylenes in only one hour.

Organic & Biomolecular Chemistry published new progress about Cyclization ([4+2], decarbonylative, decarboxylative). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Related Products of 118-45-6.

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