Tag: M.W=0-100

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

Talavera-Aleman, Armando; Marrot, Jerome; Dagousset, Guillaume; Thomassigny, Christine published the artcile< Synthesis of Nitrogen- and Oxygen-Containing Heterocycles by Prins Cyclization in Continuous Flow>, Product Details of C4H8O, the main research area is tetrahydropyridine preparation; amine aldehyde aza silyl Prins cyclization; tetrahydropyran preparation; aldehyde butenol oxa Prins cyclization.

Aza-silyl-Prins and oxa-Prins cyclization reactions in continuous-flow chem. were described for the synthesis of the corresponding tetrahydropyridines I [R = Ph, Bn; R1 = Bu, CH(CH3)CH2CH2CH3, Bn, CH2CH2C6H5] and pyran derivatives, II [R = heptyl, cyclohexyl, 4-NO2C6H4] resp. In particular, the use of pyridine-carboxaldehydes for aza-silyl-Prins reaction led to either a sym. triarylmethane or two new bicyclic compounds 4-Fluorinated-2-substituted tetrahydropyran derivatives III [stereo = cis, anti] were also obtained in the oxa-Prins cyclization with good selectivity in favor of the anti-isomer.

Synthesis published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Zhan, Ying; Zhao, Yao; Du, Qiang; Rui, Jiacheng; Chen, Rizhi; Zheng, Xintao; Wu, Xiaojin published the artcile< Chemo- and regioselective nucleophilic hydrofunctionalization of unactivated aliphatic alkenes under transition-metal-free catalysts>, Quality Control of 627-27-0, the main research area is beta hetero aliphatic amide preparation green chem chemoselective regioselective; unactivated terminal internal aliphatic alkene nucleophilic Markovnikov selective hydrofunctionalization.

Transition-metal-free-catalyzed nucleophilic hydrofunctionalization of both terminal and internal unactivated aliphatic alkenes has been described for the first time. Most topical classes of carbon, nitrogen and oxygen nucleophiles are well-compatible. The highly chemoselective unprotected dinucleophiles are also presented in the atom-economical approach. More than 80 structurally complex β-hetero-substituted aliphatic amides were rapidly synthesized in good yield with exclusive Markovnikov selectivity, which are difficult to be achieved efficiently by the traditional Michael addition of conjugated amides due to their poor intrinsic electrophilicity.

Green Chemistry published new progress about Addition reaction. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Quality Control of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nasrallah, Daniel J.; Zehnder, Troy E.; Ludwig, Jacob R.; Steigerwald, Daniel C.; Kiernicki, John J.; Szymczak, Nathaniel K.; Schindler, Corinna S. published the artcile< Hydrazone and Oxime Olefination via Ruthenium Alkylidenes>, Safety of But-3-en-1-ol, the main research area is imine olefine ruthenium alkylidine catalyst olefination; olefin preparation; Alkylidenes; Hydrazones; Olefination; Oximes; Ruthenium.

The development of an efficient method for the olefination of hydrazones and oximes was described. The key design approach that enabled this transformation was tuning of the energy/polarity of C=N π-bonds by employing heteroatom functionalities (NR2, OR). The resulting hydrazones or oximes facilitated olefination with ruthenium alkylidenes. Through this approach, showed that air-stable, com. available ruthenium alkylidenes provide access to functionalized alkenes (20 examples) in ring-closing reactions with yields up to 88%.

Angewandte Chemie, International Edition 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, Safety of But-3-en-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Yachao; Mao, Liang-Liang; Hu, Sifan; Luan, Yi; Cong, Huan published the artcile< Photo-induced anti-Markovnikov hydroalkylation of unactivated alkenes employing a dual-component initiator>, Recommanded Product: But-3-en-1-ol, the main research area is cyanoester preparation; unactivated alkene photochem anti Markovnikov hydroalkylation dual component initiator.

Metal-free anti-Markovnikov hydroalkylation of unactivated alkenes RCH=CH2 (R = cyclohexyl, 9-(1,3-dioxolan-2-yl)nonyl, 10-methoxy-10-oxodecyl, etc.) with Et cyanoacetate has been developed, featuring the use of a dual-component initiator containing an organic photocatalyst and a radical precursor. When combined, the two components can undergo visible light-induced single-electron transfer, and serve as a versatile and effective alkyl radical generator.

Chinese Chemical Letters 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, Recommanded Product: But-3-en-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts