Category: 627-27-0

Yeh, Nai-Hua; Krueger, Ruby; Moeller, Kevin D. published the artcile< Microelectrode Arrays, Dihydroxylation, and the Development of an Orthogonal Safety-Catch Linker>, Recommanded Product: But-3-en-1-ol, the main research area is microelectrode array dihydroxylation orthogonal safety catch linker.

Construction of larger mol. libraries on an addressable microelectrode array requires a method for recovering and characterizing mols. from the surface of any electrode in the array. This method must be orthogonal to the synthetic strategies needed to build the array. The authors report here a method for achieving this goal that employs the site-selective dihydroxylation reaction of a simple olefin.

Organic Letters published new progress about Alkenes Role: PEP (Physical, Engineering or Chemical Process), RCT (Reactant), PROC (Process), RACT (Reactant or Reagent). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Recommanded Product: But-3-en-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ballesteros-Soberanas, Jordi; Hernandez-Garrido, Juan Carlos; Ceron-Carrasco, Jose Pedro; Leyva-Perez, Antonio published the artcile< Selective semi-hydrogenation of internal alkynes catalyzed by Pd-CaCO3 clusters>, COA of Formula: C4H8O, the main research area is alkene preparation; internal alkyne selective semi hydrogenation palladium catalyst.

The de-novo synthesis of soluble or solid-supported Pd-(CaCO3)n clusters (n = 2-13) and their high catalytic activity for the semi-hydrogenation of internal alkynes compared to terminal alkynes, was presented. Mechanistic studies showed that this reactivity, i.e. internal alkynes more reactive than terminal alkynes, came from the higher electrophilicity of the Pd-(CaCO3)n cluster compared to the nanoparticulated Lindlar catalyst, which unveils the advantages of isolating the min. catalytic unit of a solid catalyst. Translating solid active sites into soluble catalysts turns around the classical approach and constitutes a paradigmatic shift in catalyst design.

Journal of Catalysis published new progress about Alkenes Role: SPN (Synthetic Preparation), PREP (Preparation). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, COA of Formula: C4H8O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dong, Hao; Xu, Cheng-Hua; Yang, Fang-Lu; Du, Lei; Liu, Chen-Long; Chen, Wen-Jing; Wang, Lin published the artcile< 1,4-butanediol selective dehydration to 3-butene-1-ol over calcium-zirconium-tin composite oxide catalysts>, COA of Formula: C4H8O, the main research area is calcium zirconium tin composite oxide catalyst butanediol selective dehydration.

Ca-Zr-Sn composite oxides catalysts for 1,4-butanediol (BDO) selective dehydration to 3-butene-1-ol (BTO) are synthesized by impregnation and co-precipitation in the present work. The results show that Ca-Zr-Sn catalysts prepared from co-precipitation by using NaOH-Na2CO3 mixing alkali solution as precipitant exhibit an excellent catalytic property for BDO dehydration to BTO. For instance, Ca-Zr-Sn oxide with Ca/Zr and Sn/Zr molar ratio of 0.68 and 0.28 calcined at 650 U+00B0C gives a BDO conversion and BTO selectivity of about 97% and 82%, resp., and exhibits no deactivation during 1000 h scale-up exptl. testing. X-ray diffraction results indicate that catalytic active centers for BDO dehydration to BTO are from Ca0.15Zr0.85O crystal phase. NH3- and CO2-temperature programmed desorption prove that the surface of obtained catalysts can provide a large amount of acid and base sites simultaneously. FT-IR spectra of pyridine-adsorbed samples show that acid sites on the surface of Ca-Zr-Sn oxide catalyst mainly exist in a state of Lewis acid, which activates terminal -OH groups of BDO mol. through complexing. The activated -OH interacts with β-H activated on base sites O2- anions relative to Ca species, thereby the CH2=CH- bonds are produced through dehydration to form BTO.

Catalysts published new progress about Calcination. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, COA of Formula: C4H8O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Doner, Anna C.; Webb, Annabelle R.; Dewey, Nicholas S.; Hartness, Samuel W.; Christianson, Matthew G.; Koritzke, Alanna L.; Larsson, Alexander; Frandsen, Kelsey M.; Rotavera, Brandon published the artcile< Vacuum-ultraviolet absorption cross-sections of functionalized four-carbon species>, Related Products of 627-27-0, the main research area is four carbon species vacuum UV differential absorption spectroscopy.

Absorption cross-sections were measured in the vacuum UV from 5.17 – 9.92 eV using differential absorption spectroscopy for 33 four-carbon species: n-butane, trans-2-butene, cis-2-butene, butanal, butyric acid, ethyloxirane, trans-2,3-dimethyloxirane, cis-2,3-dimethyloxirane, 2-methyloxetane, 2,2′-bioxirane, vinyl oxirane, 3,4-epoxybutan-2-one, diacetyl, di-Et ether, Et vinyl ether, vinyl acetate, acetic anhydride, 1-butanol, 3-buten-1-ol, 1-hydroxy-butan-2-one, 1-hydroxy-butan-3-one, 2,3-epoxybutan-1-ol, 3,4-epoxybutan-1-ol, 2-oxetanemethanol, butanone, Me vinyl ketone, 4H-1,3-dioxine, allyl formate, 2-oxobutanal, 4-hydroxybutanal, 2-methyloxetan-3-one, cis-but-2-en-1-ol, and trans-2-but-enal. Uncertainties were quantified in all cases by accounting for errors in gas-phase concentration, exptl. repeatability, and signal-to-noise ratio as a function of photon energy. With the exception of 2-oxobutanal, which is reported with an uncertainty of 10%, convolving the sources of error using the root-sum-square method led to an upper limit of 5% uncertainty above the detection limit, which is largely attributable to chem. purity. The primary objective of the present work is to provide absolute cross-sections along with quantified uncertainty limits. The majority of the absorption spectra, which reflect electronic transitions such as σ → σ* and n → σ*, are reported for the first time and provide insight into fundamental chem. physics, such as vibrational band structure and Rydberg transitions. The quant. spectra in the present work facilitates the discovery of chem. intermediates that support improvement in the accuracy of computational models for low-temperature combustion and atm. chem.

Journal of Quantitative Spectroscopy & Radiative Transfer published new progress about Absorption spectra. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Related Products of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yi, Xiangli; Hu, Xile published the artcile< Intermolecular oxidative amination of unactivated alkenes by dual photoredox and copper catalysis>, Application In Synthesis of 627-27-0, the main research area is alkene carbomate iridium catalyst photochem regioselective diastereoselective oxidative amination; alkenyl carbamate preparation fluorescence quenching redox potential.

Oxidative amination of alkenes via amidyl radical addition was potentially an efficient method to generate allylic amines, which were versatile synthetic intermediates to bioactive compounds and organic materials. Here by combining photochem. generation of amidyl radicals with Cu-mediated β-H elimination of alkyl radicals, intermol. oxidative amination of unactivated alkenes was developed. The reaction relies on tandem photoredox and copper catalysis and works for both terminal and internal alkenes. The radical nature of the reaction and the mild conditions lead to high functional group tolerance.

Chemical Science published new progress about Alkenes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Application In Synthesis of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Thiel, Andreas; Sauer, Daniel F.; Markel, Ulrich; Mertens, M. A. Stephanie; Polen, Tino; Schwaneberg, Ulrich; Okuda, Jun published the artcile< An artificial ruthenium-containing β-barrel protein for alkene-alkyne coupling reaction>, SDS of cas: 627-27-0, the main research area is ruthenium barrel protein preparation alkene alkyne coupling catalyst regioselective.

A modified Cp*Ru complex, equipped with a maleimide group, was covalently attached to a cysteine of an engineered variant of Ferric hydroxamate uptake protein component: A (FhuA). This synthetic metalloprotein catalyzed the intermol. alkene-alkyne coupling of 3-butenol with 5-hexynenitrile. When compared with the protein-free Cp*Ru catalyst, the biohybrid catalyst produced the linear product with higher regioselectivity.

Organic & Biomolecular Chemistry published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, SDS of cas: 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhou, Qingqing; Xu, Beibei; Tang, Xuan; Dai, Sheng; Ding, Bingjie; Li, Difan; Zheng, Anna; Zhang, Tong; Yao, Yefeng; Gong, Xueqing; Hou, Zhenshan published the artcile< Role of Organic Fluoride Salts in Stabilizing Niobium Oxo-Clusters Catalyzing Epoxidation>, Reference of 627-27-0, the main research area is organic fluoride salt stabilizing niobium Oxo Clusters catalyst epoxidation.

Easily available organic salts can stabilize/modify niobium (Nb) oxo-clusters. The as-synthesized Nb oxo-clusters have been characterized by various methods. These Nb oxo-clusters were catalytically active for the epoxidation of allylic alcs. and olefins with H2O2 as an oxidant. Notably, [email protected] appeared as highly dispersed nanosized particles and showed the highest catalytic activity, which can be attributed to the following reasons on the basis of characterization. First, the strong coordination of fluorine ions with Nb sites and the steric protection with bulky organic cations led to high stabilization and dispersion of the oxo-clusters in the course of the reaction. Second, a hydrogen-bond interaction between the coordinated fluorine atom and the -OH group of allylic alc. favored the epoxidation reaction. Third, the electron d. of Nb sites decreased due to the strong electron-withdrawing ability of F- adjacent to Nb sites, thus promoting the electrophilic oxygen transfer to the C=C bond.

Langmuir published new progress about Epoxidation catalysts. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Reference of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Matsuda, Asami; Sato, Fumiya; Yamada, Yasuhiro; Sato, Satoshi published the artcile< Efficient Production of 1,3-Butadiene from 1,4-Butanediol over Yb2O3 Catalyst Prepared through Hydrothermal Aging>, Electric Literature of 627-27-0, the main research area is rare earth metal oxide catalyst butanediol dehydration butadiene.

Vapor-phase catalytic dehydration of 1,4-butanediol (1,4-BDO) was investigated over rare earth metal oxide (RE2O3) catalysts to produce 1,3-butadiene (BD). Among eight RE2O3, Yb2O3 showed the highest catalytic activity to produce BD via an intermediate 3-buten-1-ol (3B1OL). Hydrothermal (HT) aging of precursor precipitate of Yb2O3 greatly enhanced the catalytic activity and the selectivity to 3B1OL of the resulting Yb2O3 catalyst. It was confirmed that the morphol. of Yb2O3 and the catalytic activity varied with the HT conditions. Hydrothermally aged Yb2O3 reduced the formation of propylene, a decomposed product of 3B1OL, even at high temperatures above 400°C. HT-aged Yb2O3 followed by calcination at 700°C showed excellent catalytic activity in the dehydration of 1,4-BDO with the highest BD productivity of 34.6 mol kgcat-1 h-1 and a high BD yield of 97.4% at 450°C.

Bulletin of the Chemical Society of Japan published new progress about Crystallinity. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Electric Literature of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Franco, Mario; Sainz, Raquel; Lamsabhi, Al Mokhtar; Diaz, Cristina; Tortosa, Mariola; Cid, M. Belen published the artcile< Evaluation of the role of graphene-based Cu(I) catalysts in borylation reactions>, Application of C4H8O, the main research area is copper monochloride immobilized graphene surface catalyst borylation alkyl halide; alkylboronate preparation borylation alkyl halide monovalent copper graphene catalyst.

Graphene-supported Cu(I) species were prepared by reduction of CuCl2 adsorbed on graphene oxide surface and examined for catalytic performance in alkyl halide borylation with B2pin2, giving alkylboronates. Carbon-supported catalysts have been considered as macromol. ligands which modulate the activity of the metallic catalytic center. Understanding the properties and the factors that control the interactions between the metal and support allows a fine tuning of the catalyzed processes. Although huge effort has been devoted to comprehending binding energies and charge transfer for single atom noble metals, the interaction of graphenic surfaces with cheap and versatile Cu(I) salts has been scarcely studied. A methodical exptl. and theor. anal. of different carbon-based Cu(I) materials in the context of the development of an efficient, general, scalable, and sustainable borylation reaction of aliphatic and aromatic halides has been performed. We have also examined the effect of microwave (MW) radiation in the preparation of these type of materials using sustainable graphite nanoplatelets (GNP) as a support. A detailed anal. of all the possible species in solution revealed that the catalysis is mainly due to an interesting synergetic Cu2O/graphene performance, which has been corroborated by an extensive theor. study. We demonstrated through DFT calculations at a high level of theory that graphene enhances the reactivity of the metal in Cu2O against the halide derivative favoring a radical departure from the halogen. Moreover, this material is able to stabilize radical intermediates providing unexpected pathways not observed using homogeneous Cu(I) catalyzed reactions. Finally, we proved that other common carbon-based supports like carbon black, graphene oxide and reduced graphene oxide provided poorer results in the borylation process.

Catalysis Science & Technology published new progress about Binding energy. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Application of C4H8O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sato, Yuka; Takasu, Akinori published the artcile< Synthesis of L-Malic Acid Based Poly(ester-thioether)s via Thiol-Ene Click Polymerization and Their Biodegradability>, Product Details of C4H8O, the main research area is thiolene click polymerization synthesis polyester thioether biodegradability.

Many bio-based polymers made from natural resources do not show satisfactory biodegradability, leading to micro-plastic pollution. Here, thiol-ene click polymerization of di-3-butenyl L-malate (BMA) and diallyl L-malate (AMA) with several dithiols including 1,8-octanedithiol (OD) proceeded at 80°C to give poly(ester-thioether)s in excellent yields (70%-90%). Using an azo-type radical trigger, polymerization proceeded more rapidly to give the expected poly(ester-thioether)s with Mn ranging from 1.9×103 to 9.4×103 and a mol. dispersity index (Mw/Mn) of 2.19-3.66. Click polymerization using 1,2-ethanedithiol (ED), ethylene bis(thioglycolate), and 2,3-butanedithiol proceeded to give similar poly(ester-thioether)s. In differential scanning calorimetry, all samples except for poly(BMA-alt-OD) had single Tg values between -37 and -47°C. In biodegradation tests using activated sludge, poly(BMA-alt-OD) and poly(AMA-alt-ED) hardly showed biodegradability, but the other poly(ester-thioether)s showed 13%-22% biodegradation after 28 days. Our results open up new avenues in the design of bio-based polymers to reduce micro-plastic pollution.

ChemistrySelect published new progress about Biodegradation. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Product Details of C4H8O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts