Tag: M.W=300-350

Zhu, Ru-Yi’s team published research in Journal of the American Chemical Society in 140 | CAS: 1146615-52-2

Journal of the American Chemical Society published new progress about 1146615-52-2. 1146615-52-2 belongs to iodides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Bromide,Iodide, name is 3-Bromo-6-iodo-imidazo[1,2-a]pyridine, and the molecular formula is C3H6O2, Synthetic Route of 1146615-52-2.

Zhu, Ru-Yi published the artcileLigand-Enabled γ-C(sp3)-H Activation of Ketones, Synthetic Route of 1146615-52-2, the publication is Journal of the American Chemical Society (2018), 140(10), 3564-3568, database is CAplus and MEDLINE.

We report the first example of Pd(II)-catalyzed γ-C(sp3)-H activation of ketones directed by a practical 2,2-di-Me aminooxyacetic acid auxiliary. 2-Pyridone ligands are identified to enable C(sp3)-H activation for the first time. A rare six-membered palladacycle intermediate is isolated and characterized to elucidate the reaction mechanism. Both (hetero)arylation and vinylation of γ-C(sp3)-H bonds are demonstrated. Sequential β- and γ-C(sp3)-H (hetero)arylation of muscone showcases the utility of this method for late-stage diversification. A convenient Mn(II)-catalyzed auxiliary removal is also developed to further underscore the practicality of this transformation.

Journal of the American Chemical Society published new progress about 1146615-52-2. 1146615-52-2 belongs to iodides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Bromide,Iodide, name is 3-Bromo-6-iodo-imidazo[1,2-a]pyridine, and the molecular formula is C3H6O2, Synthetic Route of 1146615-52-2.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Yao, Tuanli’s team published research in Journal of Organic Chemistry in 68 | CAS: 165534-79-2

Journal of Organic Chemistry published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C27H39ClN2, Safety of Dimethyl 2-iodoterephthalate.

Yao, Tuanli published the artcileSynthesis of Isocoumarins and α-Pyrones via Electrophilic Cyclization, Safety of Dimethyl 2-iodoterephthalate, the publication is Journal of Organic Chemistry (2003), 68(15), 5936-5942, database is CAplus and MEDLINE.

A variety of substituted isocoumarins, e.g. I [R1 = H, MeO; R2 = H, MeO, MeO2C; R3 = HO(CH2)3, Ph, n-hexyl, etc.; R4 = H, iodo, 4-O2NC6H4S, PhSe], and α-pyrones, e.g. II [R5 = H, Me, Ph; R6 = H, Ph; R5R6 = (CH2)3; R7 = Bu, Ph], are readily prepared in excellent yields under very mild reaction conditions by the reaction of o-(1-alkynyl)benzoates, e.g. III (R8 = Me, Me3C), or (Z)-2-alken-4-ynoates, e.g. IV (R9 = Me, Et), resp., with ICl, I2, PhSeCl, p-O2NC6H4SCl, and hydrogen iodide. This methodol. accommodates various alkynyl esters and has been successfully extended to the synthesis of polycyclic aromatic and biaryl compounds

Journal of Organic Chemistry published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C27H39ClN2, Safety of Dimethyl 2-iodoterephthalate.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Steverlynck, Joost’s team published research in Journal of Polymer Science, Part A: Polymer Chemistry in 53 | CAS: 165534-79-2

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C20H17FO4S, Computed Properties of 165534-79-2.

Steverlynck, Joost published the artcileInfluence of branching on the chiral self-assembly of poly(phenylene ethynylene), Computed Properties of 165534-79-2, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2015), 53(1), 79-84, database is CAplus.

In this contribution, we report the synthesis of chiral all-conjugated branched poly(phenylene ethynylenes) with a controlled amount of branching. Subsequently, the self-assembly of these PPEs is studied by means of UV-vis, fluorescence spectroscopy, and DSC and the influence of branching is investigated. Finally, CD-spectroscopy is used to study the influence of branching and self-assembly on the chiral expression of these polymers. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 79-84.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C20H17FO4S, Computed Properties of 165534-79-2.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Tahmouresilerd, Babak’s team published research in Catalysis Science & Technology in 8 | CAS: 165534-79-2

Catalysis Science & Technology published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C12H14IN, Recommanded Product: Dimethyl 2-iodoterephthalate.

Tahmouresilerd, Babak published the artcileMake room for iodine: systematic pore tuning of multivariate metal-organic frameworks for the catalytic oxidation of hydroquinones using hypervalent iodine, Recommanded Product: Dimethyl 2-iodoterephthalate, the publication is Catalysis Science & Technology (2018), 8(17), 4349-4357, database is CAplus.

Iodine sites have been incorporated in both MIL-53 (Al) and UiO-66 (Zr) MOFs. A multivariate approach was used to increase the accessible area within the pores to allow for the catalytic oxidation of a model substrate, hydroquinone, to the corresponding quinone. In the process, three new phases of MIL-53 were discovered, one of which proved instrumental in allowing catalysis to occur. Both UiO-66 and MIL-53 with 25% incorporated iodine containing linkers allowed for a near-ideal balance between high d. of catalytic sites and sufficient space for mass transport to enable catalysis to occur. Good conversions and selectivities were observed in nitromethane, Et acetate, acetone and ethanol with UiO-66 which proved to be the more active of the two catalysts. Oxone and 3-chloroperbenzoic acid acted as competent cooxidants. XPS revealed that the reaction proceeded through an I(III) oxidation state. The MIL-53 framework was readily recycled while the UiO-66 MOF suffered from catalyst deactivation due to particle agglomeration. UiO-66 with 25% iodine containing linker proved to be a competent catalyst for a variety of substituted hydroquinones.

Catalysis Science & Technology published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C12H14IN, Recommanded Product: Dimethyl 2-iodoterephthalate.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Duhamel, Jean’s team published research in Macromolecules in 33 | CAS: 165534-79-2

Macromolecules published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Quality Control of 165534-79-2.

Duhamel, Jean published the artcileStudy of Energy Migration and Trapping in a Poly(ethylene 2,6-naphthalenedicarboxylate) Matrix by Fluorescence Spectroscopy, Quality Control of 165534-79-2, the publication is Macromolecules (2000), 33(17), 6344-6352, database is CAplus.

The efficiency of di-Me iodoterephthalate (I-DMT), 2,6-di-Me 1-benzoylnaphthalate (BZN), and 2,6-bis(2-hydroxyethylthio)naphthalene (NSEG) at quenching the fluorescence of the poly(ethylene 2,6-naphthalenedicarboxylate) (PEN) matrix has been investigated by steady-state and time-resolved fluorescence spectroscopy. All three quenchers are capable of capturing the energy migrating between naphthalene dimers. Steady-state fluorescence data indicate that, after the quencher has trapped the migrating energy, the excited quencher can relax either via nonradiative processes (I-DMT) or via radiative processes (BZN and NSEG). Fluorescence decay measurements show that NSEG quenches PEN fluorescence best, followed by BZN, and I-DMT is the worst quencher. Quenching efficiency of a given quencher increases linearly with quencher concentration, for quencher contents below the overlap concentration, for which the entire polymer matrix is covered by quenchers. Above the overlap concentration, quenching efficiency increases at a slower pace because any addnl. quencher quenches an already quenched volume Our exptl. results could be interpreted by compartmentalizing the quenching process in the polymer matrix. Compartmentalization could be handled by a blob model, which was applied to quantify the quenching efficiency of I-DMT and BZN.

Macromolecules published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Quality Control of 165534-79-2.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Al-Amin, Mohammad’s team published research in Organometallics in 33 | CAS: 165534-79-2

Organometallics published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Product Details of C10H9IO4.

Al-Amin, Mohammad published the artcileSelectivity, Compatibility, Downstream Functionalization, and Silver Effect in the Gold and Palladium Dual-Catalytic Synthesis of Lactones, Product Details of C10H9IO4, the publication is Organometallics (2014), 33(19), 5448-5456, database is CAplus and MEDLINE.

The chemo- and regioselectivity and functional group compatibility in Au and Pd cooperatively catalyzed cross-coupling reactions were determined in the synthesis of lactones; the selectivity in the Au and Pd dual-metal catalysis system was distinct from that available for the same class of substrates in systems with only Au catalysis or only Pd catalysis rather than dual catalysis. The dual-catalytic rearrangement reaction selectively promoted oxidative addition at the C-O bond over the C-Br bond, providing a useful C-Br bond handle for downstream functionalization showcased via Suzuki-Miyaura and Sonogashira coupling reactions. Product classes were expanded from isocoumarins to three previously unpublished ring classes: pyrone, indolepyrone, and furopyrone.

Organometallics published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Product Details of C10H9IO4.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Faizi, Darius J.’s team published research in Journal of the American Chemical Society in 138 | CAS: 165534-79-2

Journal of the American Chemical Society published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Application In Synthesis of 165534-79-2.

Faizi, Darius J. published the artcileCatalyst-Free Synthesis of Borylated Lactones from Esters via Electrophilic Oxyboration, Application In Synthesis of 165534-79-2, the publication is Journal of the American Chemical Society (2016), 138(7), 2126-2129, database is CAplus and MEDLINE.

A catalyst-free oxyboration reaction of alkynes is developed. The resulting borylated isocoumarins and 2-pyrones are isolated as boronic acids, pinacolboronate esters, or potassium organotrifluoroborate salts, providing a variety of bench-stable organoboron building blocks for downstream functionalization. This method has functional group compatibility, is scalable, and proceeds with readily available materials: B-chlorocatecholborane and Me esters. Mechanistic studies indicate that the B-chlorocatecholborane acts as a carbophilic Lewis acid toward the alkyne, providing a mechanistically distinct pathway for oxyboration that avoids B-O σ bond formation and enables this catalyst-free route.

Journal of the American Chemical Society published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Application In Synthesis of 165534-79-2.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Chen, Zhiwei’s team published research in Journal of Organic Chemistry in 83 | CAS: 165534-79-2

Journal of Organic Chemistry published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, COA of Formula: C10H9IO4.

Chen, Zhiwei published the artcileConstruction of Polycyclic β-Ketoesters Using a Homoconjugate Addition/Decarboxylative Dieckmann Annulation Strategy, COA of Formula: C10H9IO4, the publication is Journal of Organic Chemistry (2018), 83(11), 6225-6234, database is CAplus and MEDLINE.

The construction of arene-fused cyclic β-ketoesters from 2-iodoaryl esters and 1,1-cyclopropane diesters is detailed. The synthetic method takes advantage of a CuI·SMe2-mediated homoconjugate addition followed by a decarboxylative Dieckmann cyclization to afford valuable polycyclic building blocks. Various iodoaryl esters and 1,1-cyclopropane diesters were evaluated, and the limitations of both reactions are discussed. Several mechanistic probes are detailed and synthetic applications are described.

Journal of Organic Chemistry published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, COA of Formula: C10H9IO4.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Wu, Yubo’s team published research in Chemistry – A European Journal in 17 | CAS: 165534-79-2

Chemistry – A European Journal published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C4H6N4O, HPLC of Formula: 165534-79-2.

Wu, Yubo published the artcileChiral Donor Photoinduced-Electron-Transfer (d-PET) Boronic Acid Chemosensors for the Selective Recognition of Tartaric Acids, Disaccharides, and Ginsenosides, HPLC of Formula: 165534-79-2, the publication is Chemistry – A European Journal (2011), 17(27), 7632-7644, S7632/1-S7632/67, database is CAplus and MEDLINE.

A modular approach was proposed for the preparation of chiral fluorescent mol. sensors, in which the fluorophore, scaffold, and chirogenic center can be connected by ethynyl groups, and these modules can easily be changed to other structures to optimize the mol. sensing performance of the sensors. This modular strategy to assembly chiral sensors alleviated the previous restrictions of chiral boronic acid sensors, for which the chirogenic center, fluorophore, and scaffold were integrated, thus it was difficult to optimize the mol. structures by chem. modifications. The authors demonstrated the potential of their new strategy by the preparation of a sensor with a larger scaffold. The photoinduced electron-transfer (PET) effect is efficient even with a large distance between the N atom and the fluorophore core. Furthermore, the rarely reported donor-PET (d-PET) effect, which was previously limited to carbazole, was extended to phenothiazine fluorophore. The contrast ratio, i.e., PET efficiency of the new d-PET sensor, is increased to 8.0, compared to 2.0 with the previous carbazole d-PET sensors. Furthermore, the ethynylated phenothiazine shows longer excitation wavelength (centered at 380 nm) and emission wavelength (492 nm), a large Stokes shift (142 nm), and high fluorescence quantum yield in aqueous solution (Φ=0.48 in MeOH/water, 3:1 volume/volume). Enantioselective recognition of tartaric acid was achieved with the new d-PET boronic acid sensors. The enantioselectivity is up to 10 (ratio of the binding constants toward D– and L-tartaric acid, kD/kL). A consecutive fluorescence enhancement/decrease was observed, thus the authors propose a transition of the binding stoichiometry from 1:1 to 1:2 as the analyte concentration increases, which is supported by mass spectra anal. The boronic acid sensors were used for selective and sensitive recognition of disaccharides and glycosylated steroids (ginsenosides).

Chemistry – A European Journal published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C4H6N4O, HPLC of Formula: 165534-79-2.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Benin, Vladimir’s team published research in Polymer Degradation and Stability in 106 | CAS: 165534-79-2

Polymer Degradation and Stability published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Related Products of iodides-buliding-blocks.

Benin, Vladimir published the artcileHeat release of polyurethanes containing potential flame retardants based on boron and phosphorus chemistries, Related Products of iodides-buliding-blocks, the publication is Polymer Degradation and Stability (2014), 108-121, database is CAplus.

Using a polyurethane of methylene di-Ph isocyanate and 1,3-propane diol, several new non-halogenated aromatic boron and phosphorus flame retardants were evaluated for heat release reduction potential using the pyrolysis combustion flow calorimeter (PCFC). The polyurethanes were prepared in the presence of the potential flame retardants via solvent mixing and copolymerization methods, and were then analyzed via spectroscopic methods to determine if the flame retardant was still present in the final product. PCFC testing on the resulting products showed that the flame retardant mol. can have different effects on heat release depending upon how it is mixed into the polyurethane. Some materials showed strong effects on heat release reduction when reacted into the polyurethane during copolymerization, while others were more effective at heat release reduction when simply solvent blending into the polyurethane. The results from this screening study show that flame retardant chem. structure and its environment in the polymer (covalently bonded vs. noncovalent interactions) greatly affects flammability behavior. From the combined data, aromatic boronates were found to be very effective at reducing heat release and inhibiting melt flow during thermal decomposition, as were some aromatic phosphonic acid terephthalic acid and terephthalate derivatives

Polymer Degradation and Stability published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Related Products of iodides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com