Category: 3240-10-6

Yang, Yongjie; Jiang, Kai; Zhu, Hua; Yin, Biaolin published the artcile< Synthesis of Highly Conjugated Functionalized 2-Pyridones by Palladium-Catalyzed Aerobic Oxidative Dicarbonation Reactions of N-(Furan-2-ylmethyl) Alkyne Amides and Alkenes as Coupling Partners>, COA of Formula: C9H5ClO2, the main research area is furanylmethylpropynamide ethene palladium catalyst diastereoselective aerobic oxidative dicarbonation; oxopropenyl ethenyl pyridinone preparation.

A mild, step-economical method for the synthesis of highly conjugated functionalized 2-pyridones from N-(furan-2-ylmethyl) alkyne amides was reported. This method involved Pd-catalyzed aerobic oxidative dicarbonation reactions of alkynes with carbon nucleophiles of a furan ring and an acrylate or styrene as coupling partners. The UV-vis absorption spectra of some of the 2-pyridones indicated that they absorbed shortwave radiation, suggested their potential utility for filtration of such radiation.

Journal of Organic Chemistry published new progress about Alkenes Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, COA of Formula: C9H5ClO2.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Zhang, Lin; Bu, Ran; Liu, Xiao-Yan; Mu, Peng-Fei; Gao, En-Qing published the artcile< Schiff-base molecules and COFs as metal-free catalysts or silver supports for carboxylation of alkynes with CO2>, Category: chlorides-buliding-blocks, the main research area is alkynoic acid preparation; alkyne terminal carboxylation carbon dioxide organocatalyst; Schiff base covalent organic framework preparation alkyne carboxylation catalyst.

Carboxylation of terminal alkynes with CO2 to produce propiolic acids is an atom economical and high-value route for CO2 fixation and utilization, but the conversion under mild conditions needs transition metal catalysts. In this article, the application of transition-metal-free organocatalysts for the reaction have been demonstrated for the first time. These efficient catalysts are Schiff bases derived from 1,3,5-triformylphloroglucinol, either homogeneous (discrete mols.) or heterogeneous (covalent organic frameworks, COFs). The key catalytic sites are phenoxo and imine groups, which activate CO2 through phenoxo-CO2 complexation and also activate the C(sp)-H bond through bifurcate C-H···Nimine and C-H···Ophenoxo hydrogen bonds. The 2,2′-bipyridyl sites in the COF also contribute to the catalytic performance. The COF catalyst is less active than the mol. one but has the advantages of heterogeneous catalysis. Higher performance was also demonstrated by combining silver nanoparticles with the intrinsically catalytic COF. This work opens up the potential of developing transition-metal-free catalysts for the CO2 conversion reaction and demonstrates the new prospects of COFs as tailorable platforms for heterogeneous catalysis.

Green Chemistry published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Category: chlorides-buliding-blocks.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Lan, Xingwang; Li, Qing; Cao, Lili; Du, Cheng; Ricardez-Sandoval, Luis; Bai, Guoyi published the artcile< Rebuilding supramolecular aggregates to porous hollow N-doped carbon tube inlaid with ultrasmall Ag nanoparticles: A highly efficient catalyst for CO2 conversion>, Application In Synthesis of 3240-10-6, the main research area is alkyne carboxylation nitrogen doped carbon tube silver nanoparticle catalyst.

Fabrication of novel heterogeneous catalysts with well-designed structures is unusually intriguing for CO2 conversion. In this study, we have prepared a porous hollow N-doped carbon tube through the pyrolysis of self-assembled melamine cyanurate aggregate supramol. precursor. Ultrasmall Ag nanoparticles were tightly anchored in the hollow N-doped carbon tube via an in-situ fabrication. The average size of Ag nanoparticles was confined in only 2.19 nm with the assistance of abundant surface functional groups and porous structures. Addnl., inherent hollow N-doped carbon tube structure could prevent nanoparticles aggregating and leaching; also, they facilitated gas adsorption and mass transfer in CO2 catalysis. Due to their remarkable properties, the novel material was utilized as heterogeneous catalyst for the carboxylation of alkynes with CO2, and exhibited outstanding catalytic activity and stability at ambient pressure and low temperature

Applied Surface Science published new progress about Alkynes Role: RCT (Reactant), RACT (Reactant or Reagent). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Application In Synthesis of 3240-10-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Ghosh, Swarbhanu; Ghosh, Aniruddha; Riyajuddin, Sk.; Sarkar, Somnath; Chowdhury, Arpita Hazra; Ghosh, Kaushik; Islam, Sk. Manirul published the artcile< Silver Nanoparticles Architectured HMP as a Recyclable Catalyst for Tetramic Acid and Propiolic Acid Synthesis through CO2 Capture at Atmospheric Pressure>, SDS of cas: 3240-10-6, the main research area is recyclable silver nanoparticle architecture hypercrosslinked microporous polymer preparation; propargylic amine preparation carbon dioxide silver catalyst green chem; tetramic acid preparation; phenylacetylene carbon dioxide silver catalyst green chem; phenylpropiolic acid preparation.

The synthesis of hypercrosslinked microporous polymer (HMP-2) was assembled significant concentration by the virtue of its adjustable porosity, operative design and absolutely ordering structure. This perfectly structured Ag NPs supported carbocatalyst (Ag-HMP-2) was been synthesized by Friedel-Crafts alkylation between 4,4′-Bis(bromomethyl)-1,1′-biphenyl and carbazole over anhydrous iron(III)chloride catalysis followed by the appending of the silver nanoparticles (Ag NPs) onto the material. The silver nanoparticle was decorated over the HMP-2 to prepare the corresponding catalyst (Ag-HMP-2). The characterization of the newly produced material was conducted by N2 adsorption/desorption studies, XPS, FE-SEM, transmission electron microscopy (TEM) and Powder X-ray diffraction (PXRD) methods. This microporous catalyst was spectacular activities for the production of tetramic acids from various types of propargylic amine derivatives at 60C under atm. carbon dioxide pressure. Parallel attempt on fixation of CO2 was executed over terminal alkynes to synthesize propiolic acids under 1 atm pressure. The catalyst (Ag-HMP-2) exhibited sufficient recycling ability for the generation of tetramic acids and propiolic acids up to five catalytic runs without reduction in its catalytic activity.

ChemCatChem published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, SDS of cas: 3240-10-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wan, Zi-juan; Wang, Jin-yuan; Luo, Jun published the artcile< NiCl2-catalyzed radical cross decarboxylative coupling between arylpropiolic acids and cyclic ethers>, Reference of 3240-10-6, the main research area is internal alkene preparation diastereoselective; arylpropiolic acid cyclic ether cross decarboxylative coupling nickel catalyst.

A direct alkenylation of cyclic ethers with arylpropiolic acids was developed for the synthesis of internal alkenes ArCH=CHR [Ar = Ph, 4-CNC6H4, 2-thienyl, etc.; R = tetrahydrofuran-2-yl, 1,3-dioxolan-4-yl, 1,4-dioxan-2-yl] via radical cross decarboxylative coupling process catalyzed by NiCl2 and using DTBP as radical initiator and oxidant. Mechanistic experiments were conducted to determine the nature of the reaction intermediates and a plausible reaction mechanism involving NiCl2-promoted radical process was proposed.

Tetrahedron Letters published new progress about Alkenes Role: SPN (Synthetic Preparation), PREP (Preparation). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Reference of 3240-10-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Zhang, Zhongzheng; Shi, Jialin; Zhu, Tianyang; Zhang, Lina; Wei, Wei published the artcile< Nitrogen-doped mesoporous carbon single crystal-based Ag nanoparticles for boosting mild CO2 conversion with terminal alkynes>, Category: chlorides-buliding-blocks, the main research area is nitrogen carbon silver nanoparticle diffusion porosity particle size; Ag nanoparticles; CO(2) conversion; Mild condition; N-doped mesoporous carbon; Terminal alkynes.

Fabrication of efficient heterogeneous catalysts with high turnover frequency (TOF) is intriguing for rapid and scalable CO2 conversion under mild conditions, but it still faces some challenges due to use of some bulky and irregular supports causing inaccessible inner pores and insufficient utilization of active sites. Herein, using a unique nitrogen-doped mesoporous single-crystal carbon (named IRFC) as a host for loading Ag nanoparticles for the first time, a series of Ag/IRFC catalysts with high TOF (8.7-22.3 h-1) were facilely prepared by a novel “”impregnation and in-situ reduction”” strategy. The neat morphol. and high porosity of IRFC with abundant N species, providing homogeneous surface, adequate space and anchoring sites for Ag immobilization, greatly facilitated the formation of highly-distributed ultrasmall Ag nanoparticles (2.3 nm). Meanwhile, smooth and short diffusion pathways were inherited from the ordered mesopores and small particle sizes of IRFC. Owing to these unparalleled structural features, the Ag/IRFC catalysts exhibited excellent catalytic activity, stability, and generality for mild CO2 conversion even under diluted conditions. This work not only presents a novel catalyst for mild CO2 conversion, but also brings some inspirations to designing highly efficient catalysts using well-shaped supporting nanomaterials for direct utilization of low-concentration CO2, such as flue gas.

Journal of Colloid and Interface Science published new progress about Binding energy. 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Category: chlorides-buliding-blocks.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Shi, Jialin; Zhang, Lina; Sun, Nannan; Hu, Deng; Shen, Qun; Mao, Fang; Gao, Qiang; Wei, Wei published the artcile< Facile and Rapid Preparation of Ag@ZIF-8 for Carboxylation of Terminal Alkynes with CO2 in Mild Conditions>, Computed Properties of 3240-10-6, the main research area is silver zeolitic imidazolate framework carboxylation catalyst terminal alkyne; CO; MOF; ZIF; carboxylation; catalysis.

Metal-organic frameworks (MOFs) are promising hosts for catalytic active sites due to their adjustable porosity and framework chem. Strategies to improve synergistic effects between the installed sites and the parent MOF are highly desired. A facile and rapid method for the preparation of xAg@ZIF-8 materials was reported. The materials were systematically characterized and used as catalysts for carboxylation of terminal alkynes via direct insertion of CO2 to the C(sp)-H bond (CTACO2). The integrity of the ZIF-8 structure could be retained upon Ag loading, but short-range crystalline ordering was modified. Two types Ag species could be installed, namely, highly dispersed Ag(I) in the backbone (AgHD) and aggregated Ag(0) nanoparticles on the outer surface (AgNP). The AgNP sites are highly effective for the activation of terminal alkynes due to its high accessibility, while the AgHD-modified ZIF-8 framework worked as a CO2 reservoir with enhanced affinity. Combination of these factors translated to high activity in the CTACO2 process, the measured turnover frequency and time yield are among the highest among most heterogeneous catalysts.

ACS Applied Materials & Interfaces published new progress about Adsorption. 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Computed Properties of 3240-10-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Jeon, Hyojin; Ko, Soo-Byung; Lee, Sunwoo published the artcile< Palladium-catalyzed decarboxylative gem-selective addition of alkynoic acids to terminal alkynes>, Recommanded Product: 3-(4-Chlorophenyl)propiolic acid, the main research area is gem enyne preparation regioselective DFT study; alkynoic acid terminal alkyne decarboxylative addition palladium catalyst.

The regioselective palladium-catalyzed decarboxylative head-to-tail addition of alkynoic acid derivatives to terminal alkynes furnished gem-1,3-enynes. Both aryl- and alkyl-substituted alkynoic acids showed favorable reactivity and high selectivity. The proposed method provided good yields and showed broad functional group tolerance. In addition, the reaction of alkynoic acids with propiolic acid provided the corresponding gem-1,3-enynes via double decarboxylation. This is the first example of propiolic acid being employed as an acetylene surrogate for the formation of gem-1,3-enynes. D. functional theory calculations were conducted to rationalize the high selectivity observed in the formation of head-to-tail addition products.

Organic Chemistry Frontiers published new progress about Addition reaction (decarboxylative). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Recommanded Product: 3-(4-Chlorophenyl)propiolic acid.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Pan, Jin-Long; Liu, Tuan-Qing; Chen, Chao; Li, Quan-Zhe; Jiang, Wei; Ding, Tong-Mei; Yan, Zhi-Qiang; Zhu, Guo-Dong published the artcile< Rhodium(III)-catalysed cascade [3 + 2] annulation of N-aryloxyacetamides with 3-(hetero)arylpropiolic acids: synthesis of benzofuran-2(3H)-ones>, Application of C9H5ClO2, the main research area is benzofuranone preparation stereoselective regioselective fluorescence; aryloxyacetamide arylpropiolic acid annulation rhodium catalyst.

Herein, a cascade [3 + 2] annulation of N-aryloxyacetamides with 3-(hetero)arylpropiolic acids affording benzofuran-2(3H)-ones I (R = 7-CH3, 7-Cl, 6-CF3,etc.; Ar = C6H5, 4-MeC6H4, 3-FC6H4, etc.) via rhodium(III)-catalyzed redox-neutral C-H functionalization/isomerization/lactonization using an internal oxidative directing group O-NHAc was achieved. This catalytic system provides a regio- and stereoselective approach to synthesize (Z)-3-(amino(aryl)methylene)benzofuran-2(3H)-ones with exclusive Z configuration selectivity, acceptable yields and good functional group tolerance. Preliminary investigations on UV-visible and fluorescence behaviors reveal that the annulation products may be applied as a promising fluorescent probe for sensing metal cations, especially for cerium (Ce3+).

Organic & Biomolecular Chemistry published new progress about Acetamides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (N-aryloxy). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Application of C9H5ClO2.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Lu, Shi-Chao; Chang, Zhi-Xin; Xiao, Yu-Liang; Li, Hong-Shuang published the artcile< Regio- and Stereoselective Synthesis of 2-Hydroxymethyl-1,3-enynes by Rhodium-Catalyzed Decarboxylative C-C Coupling>, Name: 3-(4-Chlorophenyl)propiolic acid, the main research area is hydroxymethyl enyne preparation regioselective diastereoselective; propiolic acid propargyl alc decarboxylative coupling rhodium catalyst.

A regio- and stereoselective protocol for rhodium(I)-catalyzed decarboxylative C-C coupling between propiolic acids R1CCC(O)2H (R1 = CH3, C6H5, 1-benzothiophen-2-yl, etc.) and propargyl alcs. R2R3C(OH)CCR2 (R2R3 = -(CH2)4-, R4 = CH3; R2 = R3 = H, R4 = CH3; R2 = CH3, R3 = C6H5, R4 = H, etc.) has been achieved. This efficient catalytic approach could facilitate the preparation of a diversity of synthetically valuable 2-hydroxymethyl-1,3-enynes (Z)-R2R3C(OH)C(CCR1)=CHR4 with high Z-stereoselectivity. Notably, non-terminal alkynes were smoothly transformed into the target products that show intriguing synthetic utility.

Advanced Synthesis & Catalysis published new progress about Alcohols, propargyl Role: RCT (Reactant), RACT (Reactant or Reagent). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Name: 3-(4-Chlorophenyl)propiolic acid.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics