Category: 76-84-6

Zhou, Pan; Li, Yuqiang; Tao, XU published the artcile< Molybdenum-Catalyzed Cross-Coupling of Benzyl Alcohols: Direct C-OH Bond Transformation via [2 + 2]-Type Addition and Elimination>, Electric Literature of 76-84-6, the main research area is benzyl alc deoxygenative cross coupling molybdenum catalyst.

Traditional cross-couplings catalyzed by transition metal catalysts generally rely on the classic oxidative addition-transmetalation-reductive elimination process, which requires low-valent precious metals and an inert atm. and which initiates from carbon-alide or pesudo carbon-halide bonds. Herein, an unprecedented molybdenum-oxo-complex-catalyzed intermol. cross-coupling of benzyl alcs. has been reported. Various alcs. including primary, secondary, and tertiary substrates can proceed efficiently under these conditions. Several functional groups sensitive to the low-valent transition metals, such as aryl halides, can be well tolerated. The mechanistic studies and DFT calculations suggest that an intramol. concerted cyclization was involved in the reverse [2 + 2]-type elimination process.

Organic Letters published new progress about Addition reaction ([2 + 2]). 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Electric Literature of 76-84-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Von Nehring, Erich Scott; Dragojlovic, Veljko published the artcile< Handling of air-sensitive and moisture-sensitive reagents in an undergraduate chemistry laboratory: the importance of the syringe>, Formula: C19H16O, the main research area is air moisture sensitive reagent graduate education chem laboratory.

A relatively large number of organic and inorganic chem. reagents are air- or moisture-sensitive, and undergraduate students should be trained in their use. When handling such reagents, it is important to select the correct syringe and to use that syringe correctly. We have found that the best syringe for use in an undergraduate setting is a fully plastic polypropylene (PP) Luer lock syringe. While generally safe, such a syringe should be treated as a single-use syringe. Repeated exposure to an organic solvent causes progressively more resistance to the movement of the plunger, or its complete freeze. Thus, when drawing in a volume of liquid that is close to the capacity of the syringe, the plunger could be inadvertently pulled out causing a spill.

Journal of Chemical Education published new progress about Chemical spills. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Formula: C19H16O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Na; Zhang, Jince; Wen, Jingyi; You, Xiaolei; Fang, Dawei published the artcile< Immortal polymerization of LA: the influence of steric effects, electronic effects and pKa on chain transfer agents>, Safety of Triphenylmethanol, the main research area is lactide immortal ring opening polymerization chain transfer agent; steric electronic effect.

The “”immortal”” ring-opening polymerization (iROP) of L-LA, catalyzed by ligand-free Ca[N(SiMe3)2]2(THF)2 in combination with different chain transfer agents (alcs., phenols and PhCH2NH2) was systematically investigated for the first time. When alcs. were used as CTAs (pKa: 14.36-12.73), the polymerization proceeded smoothly and efficiently in excess of PhCH2OH and Ph2CHOH feeding, through which the mol. weights of the obtained PLAs could be precisely controlled by the monomer/alcs. and the mol. weight distributions were maintained at a very narrow level, showing a typically immortal characterization. Upon increasing the steric effect of the alc. (Ph3COH), the activity became lower and the mol. weight distribution became broader than those of PhCH2OH and Ph2CHOH, indicating that the steric effect of alcs. has a significant influence on the iROP of LA. Whereas for the phenol-based CTAs (pKa: 10.17-7.15), the electronic effect was obvious for the ROP of L-LA. The study of the active species indicated that the Ca-O group was the initiation group for alc.- and phenol-based systems. There exists two active species (Ca-NHCH2Ph/Ca-N(SiMe3)2) in the Ca[N(SiMe3)2]2(THF)2/PhCH2NH2 system. The polymerization kinetic behaviors showed that the catalytic activity follows the order of PhCH2OH > Ph2CHOH > PhOH > PhCH2NH2. The kapp of Ph2CHOH increased firstly and then decreased with the increase of the CTA, indicating that the CTA promoted the propagation of polymerization firstly and then decreased the propagation of polymerization

Polymer Chemistry published new progress about Chain transfer agents. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Safety of Triphenylmethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mondal, Prasenjit; Lovisari, Marta; Twamley, Brendan; McDonald, Aidan R. published the artcile< Fast Hydrocarbon Oxidation by a High-Valent Nickel-Fluoride Complex>, Category: alcohols-buliding-blocks, the main research area is hydrocarbon oxidation kinetics bond dissociation enthalpy activation entropy; fluorination; high-valent oxidants; metal-oxo species; oxidation catalysis; reactive intermediates.

In the search for highly reactive oxidants we have identified high-valent metal-fluorides as a potential potent oxidant. The high-valent Ni-F complex [NiIII(F)(L)] (2, L=N,N’-(2,6-dimethylphenyl)-2,6-pyridinedicarboxamidate) was prepared from [NiII(F)(L)]- (1) by oxidation with selectfluor. Complexes 1 and 2 were characterized by using 1H/19F NMR, UV-vis, and EPR spectroscopies, mass spectrometry, and X-ray crystallog. Complex 2 was found to be a highly reactive oxidant in the oxidation of hydrocarbons. Kinetic data and products anal. demonstrate a hydrogen atom transfer mechanism of oxidation The rate constant determined for the oxidation of 9,10-dihydroanthracene (k2=29 M-1 s-1) compared favorably with the most reactive high-valent metallo-oxidants. Complex 2 displayed reaction rates 2000-4500-fold enhanced with respect to [NiIII(Cl)(L)] and also displayed high kinetic isotope effect values. Oxidative hydrocarbon and phosphine fluorination was achieved. Our results provide an interesting direction in designing catalysts for hydrocarbon oxidation and fluorination.

Angewandte Chemie, International Edition published new progress about Activation enthalpy. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Meng, Shan-Shui; Tang, Xiaowen; Luo, Xiang; Wu, Ruibo; Zhao, Jun-Ling; Chan, Albert S. C. published the artcile< Borane-Catalyzed Chemoselectivity-Controllable N-Alkylation and ortho C-Alkylation of Unprotected Arylamines Using Benzylic Alcohols>, Computed Properties of 76-84-6, the main research area is borane catalyzed chemoselectivity controllable nitrogen ortho carbon alkylation; alkylation unprotected arylamine benzylic alc DFT calculation.

An unprecedented protocol for the efficient and highly chemoselective alkylation of unprotected arylamines using alcs. catalyzed by B(C6F5)3 has been developed. The reaction gives N-alkylated products and ortho C-alkylated products in different solvents in good chemoselectivities and yields. Control experiments and DFT calculations indicated that the borane underwent alc./arylamine exchange to ensure catalytic activity, and a possible mechanism involving a carbocation is proposed.

ACS Catalysis published new progress about Alkylation. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Computed Properties of 76-84-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Shi-Yue; Gong, Wei-Tao; Qu, Wei-Dong; Deng, Xiao-Rong; Dong, Kai-Xun; Zhang, Shu-Guang; Ning, Gui-Ling published the artcile< Construction of Ionic Porous Organic Polymers (iPOPs) via Pyrylium Mediated Transformation>, Formula: C19H16O, the main research area is chromium carbon dioxide ionic porous organic polymer adsorption.

Two new ionic porous organic polymers (iPOPs) with different counter anions were successfully fabricated via well-known pyrylium mediated transformation into pyridinium. 13C solid-state NMR, XPS, and FTIR were analyzed and confirmed the formation of pyridinium in the network. Containing charged and aromatic networks, both iPOPs exhibit a high affinity towards toxic hexavalent chromium Cr(VI) ions. What is more, it has been demonstrated that both CO2 adsorption and Cr(VI) removal properties can be tuned by simply varying counter anions.

Chinese Journal of Polymer Science published new progress about Adsorption. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Formula: C19H16O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Xiao, Shuhuan; Liu, Chen; Song, Bin; Wang, Liang; Qi, Yan; Liu, Yongjun published the artcile< Samarium-based Grignard-type addition of organohalides to carbonyl compounds under catalysis of CuI>, Synthetic Route of 76-84-6, the main research area is alc ketone aldehyde preparation chemoselective; organohalide carbonyl compound Grignard addition copper catalysis.

Grignard-type additions were readily achieved under the mediation of CuI (10 mol%) and samarium (2 equivalent) by employing various organohalides, e.g. benzyl, aryl, heterocyclic and aliphatic halides (Cl, Br or I), and diverse carbonyl compounds (e.g. carbonic esters, carboxylic esters, acid anhydrides, acyl chlorides, ketones, aldehydes, propylene epoxides and formamides) to afford alcs., ketones and aldehydes, resp., with high efficiency and chemoselectivity, in which the organosamarium intermediate might be involved.

Chemical Communications (Cambridge, United Kingdom) published new progress about Addition reaction. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Synthetic Route of 76-84-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Barbieri, Alessia; Lanzalunga, Osvaldo; Lapi, Andrea; Di Stefano, Stefano published the artcile< N-Hydroxyphthalimide: A Hydrogen Atom Transfer Mediator in Hydrocarbon Oxidations Promoted by Nonheme Iron(IV)-Oxo Complexes>, HPLC of Formula: 76-84-6, the main research area is Hydroxyphthalimide hydrogen atom transfer mediator hydrocarbon oxidations; promotor nonheme Iron Oxo complex.

The oxidation of a series of hydrocarbons by the nonheme iron(IV)-oxo complex [(N4Py)FeIV=O]2+ is efficiently mediated by N-hydroxyphthalimide. The increase of reactivity is associated to the oxidation of the mediator to the phthalimide N-oxyl radical, which efficiently abstracts a hydrogen atom from the substrates, regenerating the mediator in its reduced form.

Journal of Organic Chemistry published new progress about Hydrogen transfer. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, HPLC of Formula: 76-84-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dowson, George R. M.; Cooper, Joshua; Styring, Peter published the artcile< Reactive capture using metal looping: the effect of oxygen>, Application In Synthesis of 76-84-6, the main research area is oxygen Grignard reagent reactive capture metal looping flue gas.

In the effort to create a sustainable future economy, the ability to directly convert dilute gas-phase CO2 in waste gas streams into useful products would be a valuable tool, which may be achievable using Grignard reagents as both the capture and the conversion materials. The magnesium salt byproduct can be recovered, and metallic magnesium regenerated through conventional high-efficiency electrolysis. This stoichiometric approach is known as metal looping, where the magnesium acts as the energy vector for the capture and conversion, allowing both to occur at room temperature and atm. pressure. However, the process has only previously been demonstrated with 12% CO2 in nitrogen mixtures If we consider this process in a real post-combustion flue gas conversion scenario, the sensitivity of Grignard reagents to other gases (and water vapor) must be considered. While some of these gases and the water vapor are relatively easily removed, in most flue gas streams the most common other gas present, oxygen, would be far more challenging to excise, and oxygen is known to react with Grignard reagents, albeit slowly. In order to determine if higher oxygen concentrations could be tolerated, allowing the possibility of a variety of relatively inexpensive and possibly profitable direct CO2 conversion pathways to be developed, a range of industrially relevant CO2/O2 mixtures were made and carefully bubbled through phenylmagnesium bromide solutions

Faraday Discussions published new progress about Decomposition. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Application In Synthesis of 76-84-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Okuda, Yuta; Nagaoka, Masahiro; Yamamoto, Tetsuya published the artcile< Bulky N-Heterocyclic-Carbene-Coordinated Palladium Catalysts for 1,2-Addition of Arylboron Compounds to Carbonyl Compounds>, Safety of Triphenylmethanol, the main research area is nitrogen heterocyclic carbene pentanylaniline cyclometallated palladium complex preparation catalyst; primary secondary tertiary alc preparation; arylboronic acid boronate aldehyde ketone addition.

The synthesis of primary, secondary, and tertiary alcs. by the 1,2-addition of arylboronic acids or boronates to carbonyl compounds, including unactivated ketones, using novel bulky yet flexible N-heterocyclic carbene (NHC)-coordinated 2,6-di(pentan-3-yl)aniline (IPent)-based cyclometallated palladium complexes (CYPs) as catalysts is reported. The PhS-IPent-CYP-catalyzed reactions are efficient at low catalyst loadings (0.02-0.3 mol% Pd), and the exceptional catalytic activity for 1,2-addition is attributed to the steric bulk of the NHC ligand. These reactions can yield a wide range of functionalized benzylic alcs. that are difficult to synthesize by classical protocols using highly active organomagnesium or lithium reagents.

ChemCatChem published new progress about 1,2-Addition reaction. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Safety of Triphenylmethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts