Tag: M.W=100-150

Yang, Minfeng published the artcileDesign and synthesis of Phenylaminothiophene donor-based chromophore with enhanced electro-optic activity, SDS of cas: 5961-59-1, the main research area is phenylaminothiophene chromophore preparation electro optical property.

Three novel chromophores B-D have been synthesized based on thiophene derivatived donors, including 5-(methyl(phenyl)amino)thiophene 5-(bis(4-methoxyphenyl)amino)thiophene 5-((4-methoxyphenyl)(methyl)amino)thiophene groups resp., with the same isophorone-derived bridge and tricyanovinyldihydrofuran (TCF) acceptors. A new strategy was proposed to improve the electron donating ability of the chromophore, thienyl groups were explored as a replacement for the Ph unit in the donor part of the chromophore. D. functional theory calculations suggested that the first hyperpolarizability of (arylamino) thiophene donor-containing chromophore B-D is about 20% higher than that of 4-(dialkylamino) Ph counterpart chromophore A. At least 50% enhancement in bulk nonlinearity (r33) is realized as the donor subunits were changed from alkylaniline to (arylamino) thiophene donors. Polymeric thin films doped with 25 wt% chromophore B-D have been poled to afford large r33 values of 131, 143 and 138 p.m./V at 1.31μm, resp., which is much higher than the EO activity of chromophore A (88 pm/V).

Dyes and Pigments published new progress about Chromophores. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, SDS of cas: 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Rosenberg, Martin published the artcileExtended Triangulenium Ions: Syntheses and Characterization of Benzo-Bridged Dioxa- and Diazatriangulenium Dyes, Name: 1,3-Dimethoxybenzene, the main research area is benzo bridged dioxatriangulenium diazatriangulenium dye synthesis fluorescence electrochem property.

The very limited class of fluorophores with long fluorescence lifetime (> 10 ns) and fluorescence beyond 550 nm, has been expanded with two benzo-fused triangulenium derivatives and two cationic [5]-helicene salts. The syntheses of the benzo-bridged dioxa- and diazatriangulenium derivatives (BDOTA+ and BDATA+, resp.) required two different synthetic approaches, which reflect the structural and physiochem. impact on the reactivity of [5]-helicenium precursors. Spectroscopic investigations show that introduction of the benzo-bridge into the triangulenium chromophore significantly red shifts the absorption and emission while maintaining fluorescence lifetimes above 10 ns. The combination of high quantum yield, long fluorescence lifetime, and emission above 600 nm is possible only if the structural aspects of the triangulenium framework are perfectly harmonized to secure a low rate of non-radiative deactivation. The new benzo-bridge may be a general motif to obtain red shifted derivatives of other dye classes.

Journal of Organic Chemistry published new progress about Chromophores. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Name: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ray, Parijat published the artcileDevelopment of bio-acrylic polymers from Cyrene: transforming a green solvent to a green polymer, Recommanded Product: 1,3-Dimethoxybenzene, the main research area is cyrene bioacrylic polymer polymerization.

In this work, Cyrene, a bio-based green solvent, has been transformed into its methacrylic derivative (m-Cyrene) for the first time. Polymerization of the newly-synthesized monomer was studied using different polymerization techniques such as bulk, solution and emulsion polymerization Compared to solution polymerization, emulsion polymerization was found to produce higher yields and mol. weights Cyrene, along with other green solvents, was used as a polymerization solvent and was found to be the most effective (as a solvent) with the highest yield and mol. weight The new Cyrene monomer was found to undergo rapid polymerization compared to isobornyl methacrylate (IBMA), another bio-derived monomer with a close structural similarity, and the highest polymerization rate was obtained in Cyrene as the polymerization solvent media. A reactivity ratio calculation also showed m-Cyrene to be more reactive than IBMA. The homopolymer derived from emulsion polymerization showed high glass transition temperature (192°C) and thermal stability (up to ca. 266°C). Cytotoxicity testing confirmed the non-toxic nature of the bio-derived monomer, making it a green bio-derived methacrylic monomer for synthesizing polymers, where high thermal stability and mech. properties are required.

Polymer Chemistry published new progress about Cytotoxicity. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Recommanded Product: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jia, Xiaofan published the artcileSynthesis of Stilbenes by Rhodium-Catalyzed Aerobic Alkenylation of Arenes via C-H Activation, COA of Formula: C8H10O2, the main research area is stilbene preparation rhodium catalyzed alkenylation vinyl arene.

Arene alkenylation is commonly achieved by late transition metal-mediated C(sp2)-C(sp2) cross-coupling, but this strategy typically requires prefunctionalized substrates (e.g., with halides or pseudohalides) and/or the presence of a directing group on the arene. Transition metal-mediated arene C-H activation and alkenylation offers an alternative method to functionalize arene substrates. Herein, we report a rhodium-catalyzed oxidative arene alkenylation from arenes and styrenes to prepare stilbene and stilbene derivatives The reaction is successful with several functional groups on both the arene and the olefin including fluoride, chloride, trifluoromethyl, ester, nitro, acetate, cyanide, and ether groups. Reactions of monosubstituted arenes are selective for alkenylation at the meta and para positions, generally with approx. 2:1 selectivity, resp. Resveratrol and (E)-1,2,3-trimethoxy-5-(4-methoxystyryl)benzene (DMU-212) are synthesized by this single-step approach in high yield. Comparison with palladium catalysis showed that rhodium catalysis is more selective for meta-functionalization for monosubstituted arenes and that the Rh catalysis has better tolerance of halogen groups.

Journal of the American Chemical Society published new progress about Alkenylation. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, COA of Formula: C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Jinfei published the artcileMn(II)-Catalysed ortho-alkenylation of aromatic amines and its application in reproductive diseases, Recommanded Product: 4-Methoxy-N-methylaniline, the main research area is manganese catalyst aromatic amine alkenylation reproductive disease.

A Mn(II)-catalyzed ortho-alkenylation of aromatic amines and its application in reproductive diseases were developed. The use of MnCl2 was critical for the ortho-alkenylation of aromatic amines. The general applicability of this procedure was highlighted by the synthesis of 27 vinylanilines, with good regioselectivities. The value of our approach in practical applications was investigated by studying the effects of one of the compounds 3m on 8 wk-old adult male rats with azoospermia as a mammalian model. The results show that a small amount of sperm will gradually be produced in the epididymis and testes by treatment of 8 wk-old adult male rats with azoospermia with 1 mg kg-13m after two weeks, while treatment with 10 mg kg-13m led to obvious sperm production Notably, if we increase the dose to 100 mg kg-1, there will be a lot of sperm production in the epididymis and testes after two weeks of treatment. The results of this study will be of great significance in research on drugs for treating azoospermia and oligospermia diseases.

RSC Advances published new progress about Alkenylation. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Recommanded Product: 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jeronimo, Lucas Botelho published the artcileAntioxidant and Cytotoxic Activities of Myrtaceae Essential Oils Rich in Terpenoids From Brazil, Computed Properties of 151-10-0, the main research area is Eugenia Myrcia Psidium cancer terpenoid essential oil germacrene Brazil.

This work analyzed the chem. compositions and evaluated the antioxidant and cytotoxic activities of essential oils (EO) of Eugenia patrisii (Epat), Eugenia stipitata (Esti), Myrcia splendens (Mspl), Myrcia sylvatica (Msyl), Psidium guajava (Pgua), and Psidium guineense (Pgui-1 and Pgui-2) from the Brazilian Amazon. Sesquiterpenoids were found in high concentrations in the oils of E. patrisii and M. splendens, which were rich in E-caryophyllene (32.0% and 45.8%); E. stipitata and M. sylvatica, which displayed germacrene D (11.8%) and germacrene B (24.5%); and P. guajava that showed epi-β-bisabolol (16.1%) as the main compound However, P. guineense samples (Pgui-1 and Pgui-2) were rich in monoterpenoids such as limonene (Pgui-1: 30.2%; Pgui-2 30.4%) and α-pinene (Pgui-1: 22.5%; Pgui-2: 17.7%). The samples showed a weak and moderate antioxidant activities in the DPPH assay, displaying inhibition rates from 11.5% to 38.6% (at 10 mg/mL). All samples were cytotoxic against human cancer cells by the MTT method. Epat oil showed higher activity against melanoma (SKMEL-19, IC505.8μg/mL), gastric (AGP01, IC503.2μg/mL), and colon (HCT116, IC506.7μg/mL). Meanwhile, the samples Pgua and Pgui were more active against breast cancer cells (MCF7, IC5012.4μg/mL and 11.6μg/mL, resp.).

Natural Product Communications published new progress about Antioxidants. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Computed Properties of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Alhassan, Mahama published the artcileCleaving protected peptides from 2-chlorotrityl chloride resin. Moving away from dichloromethane, Name: 1,3-Dimethoxybenzene, the main research area is peptide solid phase synthesis chlorotrityl chloride resin green chem; resin cleavage green solvent TFA anisole dimethoxybenzene.

In recent years, the work of various research groups has allowed the substitution of the hazardous solvents most widely used in solid-phase peptide synthesis, namely DMF, NMP, DCM, DEE, among others, by several much less hazardous solvents. Indeed, greener alternatives have been found for almost all steps of the process, with the exception of the cleavage of protected peptides from 2-chlorotrityl chloride resin. Here, after careful screening of several of the so-called green solvents, we propose 2% TFA in either anisole or 1,3-dimethoxybenzene as optimal for the cleavage step. The higher b.p. of these solvents compared with the DCM allows the preparation of protected peptides with less risk of premature removal of the most labile protecting groups, such as the Trt of His. Our findings once again evidence the value/versatility of green solvents in strict chem. terms.

Green Chemistry published new progress about Boiling point. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Name: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Harenberg, Johannes H. published the artcile(2-Ethylhexyl)sodium: A Hexane-Soluble Reagent for Br/Na-Exchanges and Directed Metalations in Continuous Flow, Recommanded Product: 1,3-Dimethoxybenzene, the main research area is hexane soluble ethylhexylsodium preparation sodiation organic synthesis continuous flow; Br/Na-exchange; directed sodiation; flow chemistry; packed-bed reactor; sodium.

We report the on-demand generation of hexane-soluble (2-ethylhexyl)sodium (1) from 3-(chloromethyl)heptane (2) using a sodium-packed-bed reactor under continuous flow conditions. Thus, the resulting solution of 1 is free of elemental sodium and therefore suited for a range of synthetic applications. This new procedure avoids the storage of an alkylsodium and limits the handling of metallic sodium to a min. (2-Ethylhexyl)sodium (1) proved to be a very useful reagent and undergoes in-line Br/Na-exchanges as well as directed sodiations. The resulting arylsodium intermediates are subsequently trapped in batch with various electrophiles such as ketones, aldehydes, Weinreb-amides, imines, allyl bromides, disulfides and alkyl iodides. A reaction scale-up of the Br/Na-exchange using an in-line electrophile quench was also reported.

Angewandte Chemie, International Edition published new progress about Electrophiles. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Recommanded Product: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Verevkin, Sergey P. published the artcileWebbing a network of reliable thermochemistry around lignin building blocks: tri-methoxy-benzenes, Application of 1,3-Dimethoxybenzene, the main research area is lignin building block thermochem.

Methoxy-substituted benzenes are the simplest fragments from the lignin separation feedstock. Extensive exptl. thermochem. studies of these compounds were carried out, including vapor pressure measurements, combustion and differential scanning calorimetry. These data were evaluated using empirical, semi-empirical and quantum chem. methods. The consistent sets of evaluated thermodn. data were used to design the method for predicting enthalpies of vaporization and enthalpies of formation of di- and tri-substituted benzenes. It has been found that the agglomeration of substituents on the benzene ring has dramatic consequences for the energetics of the mol. (in terms of the enthalpy of formation), as well as for the energetics of intermol. interactions (in terms of the enthalpy of vaporization). These observations are essential to reliably assess the energetics of the mols. that appear in reaction products of lignin transformations in value-adding chems. and materials.

RSC Advances published new progress about Agglomeration. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Application of 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Song, Xinjian published the artcileA highly specific and ultrasensitive probe for the imaging of inflammation-induced endogenous hypochlorous acid, Safety of 4-Methoxy-N-methylaniline, the main research area is two photon 14fluorescence imaging inflammation induced hypochlorous acid.

A turn-on two-photon fluorescent probe HCA-Green (I) for hypochlorous acid (HOCl) was synthesized using 4-methylamino-1,8-naphthalimide (MNA) as a two-photon fluorophore and p-hydroxyaniline as a leaving-recognition domain. Both the probe and the fluorophore were studied under one- and two-photon excitation modes. The fluorescence intensity of the probe was enhanced by �29-fold and �93-fold under one-photon and two-photon excitation, resp., after reacting with HOCl. A maximal two-photon action cross-section of 50 GM was obtained under excitation at 810 nm. The probe exhibited high sensitivity with a detection limit of 42.3 nM, as well as high selectivity, low cytotoxicity, and good photostability. Two-photon microscopy (TPM) was conducted to visualize HOCl levels in living cells and tissues. The production of endogenous HOCl induced by lipopolysaccharide-mediated inflammation was successfully monitored with this probe.

Analyst (Cambridge, United Kingdom) published new progress about Animal tissue. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Safety of 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem