Tag: M.W=150-200

Zander, Frank; Finkelmann, Heino published the artcile< State of Order of the Crosslinker in Main-Chain Liquid Crystalline Elastomers>, Related Products of 3964-57-6, the main research area is state order crosslinker main chain liquid crystalline elastomer.

Rigid anisotropic crosslinkers were shown to decrease the nematic order and the transition temperatures of main-chain liquid crystalline elastomers (MCLCEs). In order to look into this phenomenon, the state of order of an anisotropic crosslinker in an MCLCE was studied sep. from that of the matrix. For this purpose, multifunctional perylene derivatives were synthesized and used as a crosslinker and as a reference mesogen probe. Their states of order were measured by their dichroism, and were compared to that of the MCLCE matrix. A systematically lower degree of order was observed for the crosslinker in comparison to the matrix, both when attached to and dissolved in the network.

Macromolecular Chemistry and Physics published new progress about Crosslinking agents. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Related Products of 3964-57-6.

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

Li, Jian-Yuan; Miklossy, Gabriella; Modukuri, Ram K.; Bohren, Kurt M.; Yu, Zhifeng; Palaniappan, Murugesan; Faver, John C.; Riehle, Kevin; Matzuk, Martin M.; Simmons, Nicholas published the artcile< Palladium-Catalyzed Hydroxycarbonylation of (Hetero)aryl Halides for DNA-Encoded Chemical Library Synthesis>, Safety of 4-Chloro-3-methoxybenzoic acid, the main research area is palladium catalyzed hydroxycarbonylation heteroaryl halide DNA encoded library synthesis.

A strategy for DNA-compatible, palladium-catalyzed hydroxycarbonylation of (hetero)aryl halides on DNA-chem. conjugates has been developed. This method generally provided the corresponding carboxylic acids in moderate to very good conversions for (hetero)aryl iodides and bromides, and in poor to moderate conversions for (hetero)aryl chlorides. These conditions were further validated by application within a DNA-encoded chem. library synthesis and subsequent discovery of enriched features from the library in selection experiments against two protein targets.

Bioconjugate Chemistry published new progress about Carbonylation. 85740-98-3 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Safety of 4-Chloro-3-methoxybenzoic acid.

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

Stanetty, Peter; Puschautz, Erhard published the artcile< Herbicidal thienylureas. II>, Reference of 31166-29-7, the main research area is thienylurea; thiophenecarboxylic acid preparation Curtius degradation; urea thienyl.

Syntheses of thiophenecarboxylic acids, e.g., I (R = Cl, R1 = Me, MeO; R = Me, R1 = Cl; R = H, R1 = 4-ClC6H4O; R = Me2CH, R1 = H) are described. A modified Curtius degradation was the key step for the formation of thienylureas from I. These thienylureas are related to 2nd generation urea herbicides.

Monatshefte fuer Chemie published new progress about 31166-29-7. 31166-29-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C5H2Cl2O2S, Reference of 31166-29-7.

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

Shi, Min; Ye, Ning; Chen, Wei; Wang, Hui; Cheung, Chiming; Parmentier, Michael; Gallou, Fabrice; Wu, Bin published the artcile< Simple Synthesis of Amides via Their Acid Chlorides in Aqueous TPGS-750-M>, Product Details of C9H7ClO, the main research area is amine acid chloride TPGS 750 M amidation green chem; amide preparation.

The technol. of surfactant chem. was employed for amide bond construction via the reaction of acyl chlorides with amines in 2 wt % TPGS-750-M aqueous solution Specifically, this highly efficient method enabled a chromatog.-free scalable process and recycling of the TPGS-750-M solution

Organic Process Research & Development 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, Product Details of C9H7ClO.

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

Owolabi, Isiaka Alade; Chennapuram, Madhu; Seki, Chigusa; Okuyama, Yuko; Kwon, Eunsang; Uwai, Koji; Tokiwa, Michio; Takeshita, Mitsuhiro; Nakano, Hiroto published the artcile< Amino Amide Organocatalysts for Asymmetric Michael Addition of β-Keto Esters with β-Nitroolefins>, Product Details of C8H6ClNO2, the main research area is nitroolefin keto ester enantioselective Michael addition amino amide organocatalyst.

Asym. Michael addition of β-keto esters with trans-β-nitroolefins using chiral amino amide organocatalyst was tried and afforded synthetically useful chiral Michael adducts in both excellent chem. yields (up to 99%) and stereoselectivities (up to dr. 99:1, up to 98% ee).

Bulletin of the Chemical Society of Japan 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, Product Details of C8H6ClNO2.

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

Palate, Kleopas Y.; Yang, Zhongzhen; Whitwood, Adrian C.; Unsworth, William P. published the artcile< Synthesis of medium-ring lactams and macrocyclic peptide mimetics via conjugate addition/ring expansion cascade reactions>, Related Products of 17082-09-6, the main research area is lactam macrocyclic peptide mimetic preparation; primary amine cyclic imide conjugate addition ring expansion.

A novel conjugate addition/ring expansion (CARE) cascade reaction sequence is reported that enables medium-sized ring and macrocyclic bis-lactams to be prepared from primary amines and cyclic imides. The reactions are simple to perform, generally high yielding, and very broad in scope, especially with respect to the primary amine component. CARE reactions can also be performed iteratively, enabling β-peptoid-based macrocyclic peptide mimetics to be ‘grown’ via well controlled, sequential 4-atom ring expansion reactions, with the incorporation of varied functionalized amines during each iteration.

RSC Chemical Biology published new progress about Conjugate addition reaction. 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Related Products of 17082-09-6.

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

Delawder, Abigail O.; Natraj, Anusree; Colley, Nathan D.; Saak, Tiana; Greene, Angelique F.; Barnes, Jonathan C. published the artcile< Synthesis, self-assembly, and photomechanical actuator performance of a sequence-defined polyviologen crosslinker>, Safety of 1-(Chloromethyl)-4-vinylbenzene, the main research area is polyviologen crosslinker photochem reduction.

Although it is well known that viologen radical cations can self-assemble into stacks or complexes on account of radical-radical pairing interactions, it has only recently been demonstrated that reduction of main-chain polyviologens integrated into hydrogel networks can trigger actuation. In these earlier examples, hydrogels comprising oligoethylene glycol-based polyviologens and poly(ethylene glycol) were functionalized with terminal azide groups to prepare ‘click’-based gels. Here, we report a new structural design for the functional polyviologen that consists of main-chain viologen subunits separated by hexamethylene groups instead of glycols and is capped at each end with styrene groups. Activation of this viologen-based macrocrosslinker was achieved using chem.- and photoreduction methods and its ability to undergo intramol. chain-folding was monitored by absorption spectroscopy. Acrylate-based organogels and hydrogels were also prepared and a comparison was carried out to assess the actuator performance in each gel in terms of the rate of contraction and changes in stiffness.

Supramolecular Chemistry published new progress about Actuators. 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

Burkeyev, Meiram; Satpaeva, Zhanarkul; Tazhbayev, Yerkeblan; Seilkhanov, Tulegen; Havlicek, David published the artcile< Synthesis and radical copolymerization of 2-(4-((4-isocyanophenyl)diazenyl)phenoxy)ethyl-3-phenylacrylate with maleic anhydride>, SDS of cas: 17082-09-6, the main research area is isocyanophenyl diazenyl phenoxy ethyl phenylacrylate maleic anhydride radical copolymerization.

A monomer containing a photochromic group was synthesized by condensation of 4-(2-hydroxyethyloxy)-4-cyanoazobenzene with cinnamoyl chloride. The structure and composition of the monomer were established by FTIR, UV-Vis, 1H NMR spectroscopy, and elemental anal. The values of chem. shifts, multiplicity, and integrated intensity of 1H signals in one-dimensional NMR spectra of the monomer were determined, and the homo- and heteronuclear interactions were found. The crystal structure of 4-(2-hydroxyethyloxy)-4-cyanoazobenzene was established using X-ray diffraction anal. A copolymer containing photochromic mesogenic fragment was synthesized by radical copolymerization of 2-(4-((4-isocyanophenyl)diazenyl)phenoxy)ethyl-3-phenylacrylate with maleic anhydride.

Polymers for Advanced Technologies published new progress about Crystal structure. 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, SDS of cas: 17082-09-6.

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

Zhang, Mei-Lin; Wang, Xiao-Jun; Zhang, Gang; Long, Sheng-Ru; Yang, Jie published the artcile< One-pot Synthesis and Characterization of Poly(meta-aryl sulfide sulfone imide imide)>, Formula: C8H3ClO3, the main research area is polyimide polysulfone polythioether synthesis solubility thermal stability.

Poly(meta-aryl sulfide sulfone imide imide) (m-PASSII) was synthesized by one-pot process using 4-chlorophthalic anhydride, 3,3′-diamino di-Ph sulfone and sodium sulfide (Na2S· x H2O) as starting materials in N-methyl-2-pyrrolidone at atm. pressure. The intrinsic viscosity of m-PASSII was obtained with optimum synthesis conditions is 0.21-0.27 dL/g. The polymer and the separated intermediates which generated during the synthesis process were characterized by elemental anal., FT-IR spectrum, 1H-NMR spectrum, x-ray diffraction, DSC, TGA and dissolvability experiment The polymer is found to have excellent thermal performance with glass transition temperature (Tg) of 224° and initial degradation temperature (Td) of 441°. Moreover, the polymer is dissolvable in strong polar solvents.

Journal of Macromolecular Science, Part A: Pure and Applied Chemistry published new progress about Glass transition temperature. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Formula: C8H3ClO3.

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

Evans, Thomas L. published the artcile< Phase transfer catalyzed melt synthesis of diaryl sulfides>, Quality Control of 118-45-6, the main research area is sulfide diphenyl; phenyl sulfide; chlorobenzene sodium sulfide phase transfer.

Chlorobenzene and chlorophthalic acid derivatives I (Z = NMe, O) were treated with Na2S and quaternary phosphonium compounds, and Bu4N+ Br- and crown ethers, to yield sulfides II (R = H, cyano, NO2, OMe) and III. Thus, 4-O2NC6H4Cl was heated with Bu4P+ Br- and Na2S at 200° to give II (R = 4-NO2).

Synthetic Communications published new progress about Phosphonium compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Quality Control of 118-45-6.

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