Tag: 200-300

The author of 《In Situ Formation of RSCl/ArSeCl and Their Application to the Synthesis of 4-Chalcogenylisocumarins/Pyrones from o-(1-Alkynyl)benzoates and (Z)-2-Alken-4-ynoates》 were Xing, Linlin; Zhang, Yong; Li, Bing; Du, Yunfei. And the article was published in Organic Letters in 2019. Recommanded Product: 1,2-Diphenyldisulfane The author mentioned the following in the article:

The reaction of diorganyl disulfides or diselenides with PhICl2 in acetonitrile was found for the first time to lead to the in situ formation of organosulfenyl chloride or selenenyl chloride, which enables the regioselective intramol. chalcogenylacyloxylation of alkynes resulting in the formation of 4-chalcogenylisocumarins/pyrones, e.g., I and II, in good to excellent yields under metal-free conditions. In the experiment, the researchers used many compounds, for example, 1,2-Diphenyldisulfane(cas: 882-33-7Recommanded Product: 1,2-Diphenyldisulfane)

1,2-Diphenyldisulfane(cas: 882-33-7) belongs to ethers.Ethers do have nonbonding electron pairs on their oxygen atoms, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Recommanded Product: 1,2-Diphenyldisulfane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

The author of 《Transition-metal-free carbonylation of aryl halides with arylboronic acids by utilizing stoichiometric CHCl3 as the carbon monoxide-precursor》 were Xu, Fangning; Li, Dan; Han, Wei. And the article was published in Green Chemistry in 2019. Application of 529-28-2 The author mentioned the following in the article:

Under transition-metal-free conditions, carbonylative Suzuki couplings of aryl halides with arylboronic acid using stoichiometric CHCl3 as the carbonyl source was developed. The simple, efficient and environmentally benign method was successfully applied to the synthesis of fenofibric acid, naphthyl phenstatin and carbon-13 labeled biaryl ketone.1-Iodo-2-methoxybenzene(cas: 529-28-2Application of 529-28-2) was used in this study.

1-Iodo-2-methoxybenzene(cas: 529-28-2) participates in palladium catalyzed enantioselective Heck arylation of 2,3-dihydrofuran in the presence of chiral ionic liquids containing L-prolinate and L-lactate anions and non-chiral quaternary ammonium cations.Application of 529-28-2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

The author of 《Take Immune Cells Back on Track: Glycopolymer-Engineered Tumor Cells for Triggering Immune Response》 were Liu, Qi; Jiang, Shuaibing; Liu, Bing; Yu, You; Zhao, Zhen-Ao; Wang, Chao; Liu, Zhuang; Chen, Gaojian; Chen, Hong. And the article was published in ACS Macro Letters in 2019. Category: ethers-buliding-blocks The author mentioned the following in the article:

The “”self-homing”” of cancer cells to primary or metastatic tumor sites indicates that they could serve as vehicles for self-targeted cancer therapy; this suggests a promising method for treating end-stage cancer. Inspired by this, we propose that engineering cancer cells to carry efficient “”coup”” mols. for in situ activation of immune cells in or near tumor sites to attack tumors is a promising strategy for cancer therapy. Therefore, herein we explored the potential of engineered tumor cells to enhance their anticancer activity by stimulating immune cells. We armed tumor cell surfaces with specific glycopolymer-ligands that bind to lectins on macrophages or dendritic cells by combining HaloTag protein (HTP) fusion technique with reversible addition-fragmentation chain transfer (RAFT) polymerization We demonstrated that two synthetic well-defined glycopolymers containing, resp., N-acetylglucosamine and N-acetylmannosamine units, were introduced and stably presented on the cell surfaces via the stable covalent binding of chloroalkane-terminated polymers with membrane-bound HTP. Furthermore, it was shown that the glycopolymer-engineered HeLa cells with HTP anchors increased expression of the typical marker for M1-type macrophages (CD86) and upregulated secretion of pro-inflammatory cytokines (IL-12p70, TNF-α, and iNOS), thereby accelerating HeLa cell lysis. The maturation of dendritic cells was also promoted. This study demonstrates the strong potential of glycopolymer-engineered tumor cells in cancer immunotherapy. In the experimental materials used by the author, we found tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6Category: ethers-buliding-blocks)

tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however. Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

In 2019,ACS Energy Letters included an article by Ren, Ming; Wang, Jianan; Xie, Xinrui; Zhang, Jing; Wang, Peng. Safety of Bis(4-methoxyphenyl)amine. The article was titled 《Double-Helicene-Based Hole-Transporter for Perovskite Solar Cells with 22% Efficiency and Operation Durability》. The information in the text is summarized as follows:

Amelioration of the mobility and, in particular, the thermal stability of a hole-transporting mol. semiconductor is a practicable strategy to attain the enhancement of both power conversion efficiency (PCE) and operational durability of perovskite solar cells (PSCs). Here, a cost-effective double-[4]helicene-based mol. semiconductor (DBC-OMeDPA) is synthesized for a solution-deposited thin film, exhibiting an improved hole mobility in comparison with state-of-the-art spiro-OMeTAD control. X-ray crystallog. anal. and theor. calculation reveal the 3-dimensional mol. stacking and multidirectional hole-transporting property of DBC-OMeDPA, clarifying the microscopic mechanism of the hole-transport process. A better PCE of 22% at the AM 1.5G conditions is achieved for PSCs with DBC-OMeDPA as the hole-transporter. PSCs using DBC-OMeDPA characteristic of an elevated intrinsic glass transition temperature of 154° maintain a stable PCE output for hundreds of hours at 60° under equivalent full sunglight soaking.Bis(4-methoxyphenyl)amine(cas: 101-70-2Safety of Bis(4-methoxyphenyl)amine) was used in this study.

Bis(4-methoxyphenyl)amine(cas: 101-70-2) is a diphenylamine derivative used as a chemical additive for cured rubber.Bis(4-methoxyphenyl)amine is highly toxic and may potentially induce chromosome abberation.Safety of Bis(4-methoxyphenyl)amine

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Li, Xujun; Li, Jia; Wang, Xiaoshuang; Wu, Lingang; Wang, Yanlan; Maestri, Giovanni; Malacria, Max; Liu, Xiang published their research in Dalton Transactions in 2021. The article was titled 《Photoelectric properties of aromatic triangular tri-palladium complexes and their catalytic applications in the Suzuki-Miyaura coupling reaction》.Category: ethers-buliding-blocks The article contains the following contents:

The photoelec. properties and catalytic activities of substituted triphenylphosphine and sulfur/selenium ligand supported aromatic triangular tri-palladium complexes 1-4, abbreviated as [Pd3]+, were studied. The cyclic voltammogram of [Pd3]+ in CH3CN-Bu4NPF6 showed a single quasi-reversible wave which was consistent with their robust property and provided preliminary proof for their electron transfer processes in catalysis. With excitation at 267 nm, [Pd3]+ exhibited strong ratiometric fluorescence at 550 and 780 nm at a temperature gradient from 77 K to 287 K. These peculiar triangular tri-palladium complexes showed excellent catalytic activities and exclusive reactivity with aryl iodides over the other halogenated aromatics in the Suzuki-Miyaura coupling reaction. The electronic and steric hindrance effects of substituents on the aryl iodides and aryl boronic acids including heteroaromatics like pyridine, pyrazine and thiophenes were explored and most substrates achieved up to 99% of yields. (2-[1,1′-Biphenyl]-2-ylbenzothiazole) which was analogous to the selective cyclooxygenase-2 (COX-2) inhibitors was also synthesized with the authors’ tri-palladium catalyst and gave good isolated yield (94%). The study of the catalytic process revealed that the mechanism of the reaction may involve the replacement of the sulfur ligand on [Pd3]+ by iodine from aryl iodides, which was beneficial for the matching of C-I bond energy. The results came from multiple reactions, including the reaction of 1-Iodo-2-methoxybenzene(cas: 529-28-2Category: ethers-buliding-blocks)

1-Iodo-2-methoxybenzene(cas: 529-28-2) is a useful synthetic intermediate. It can be used in the synthesis of piperidinyl diaminopyrimidines as cyclin-dependent kinase inhibitors with antitumor activity and polysubstituted benzofuran derivatives as novel inhibitors of parasitic growth.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

《Room-Temperature-Processed Fullerene/TiO2 Nanocomposite Electron Transporting Layer for High-Efficiency Rigid and Flexible Planar Perovskite Solar Cells》 was written by Wang, Ping-Cheng; Govindan, Venkatesan; Chiang, Chien-Hung; Wu, Chun-Guey. Electric Literature of C9H19NO4 And the article was included in Solar RRL in 2020. The article conveys some information:

Room-temperature-processed TiO2 (R-Lt-TiO2) electron transporting layers (ETLs) possess low conductivity and connectivity, resulting in poor photovoltaic performance. Herein, an ethanol (EtOH)-soluble, highly conducting fullerene derivative, C60RT6, was used as an additive for Lt-TiO2 ETLs. Room-temperature processed nanocomposite ETL (R-Fu/Lt-TiO2) is prepared simply by spin coating a C60RT6 and G-TiO2 NPs (TiO2 nanoparticle prepared by grinding the bulk TiO2 powder) mixture R-Fu/Lt-TiO2 has better aligned with the frontier orbitals of the FAxMA1-xPbI3, better continuity, conductivity, flatness, and higher surface hydrophilicity compared to Lt-TiO2 ETL. Perovskite films spin coated on R-Fu/Lt-TiO2 ETLs also have slightly larger grains and thickness compared to those deposited on Lt-TiO2. Perovskite solar cells (PSCs) based on a R-Fu/Lt-TiO2 ETL possess higher power conversion efficiency (PCE, up to 20% on glass substrate), less (negligible) current hysteresis, and better long-term stability compared to those using R-Lt-TiO2 as an ETL. The flexible PSC (used indium tin oxide/polyethylene terephthalate (ITO/PET) as a substrate) with a R-Fu/Lt-TiO2 ETL achieves a PCE of 18.06% and retains 90% of the initial PCE after 500 bending cycles with a bending radius of 6 mm. The PCE of the flexible cell with a Lt-TiO2 ETL is only 8.2%, and loses 60% of the initial value after 500 bending cycles. In the experiment, the researchers used tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6Electric Literature of C9H19NO4)

tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however. Electric Literature of C9H19NO4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

《Dechalcogenization of Aryl Dichalcogenides to Synthesize Aryl Chalcogenides via Copper Catalysis》 was published in ACS Catalysis in 2020. These research results belong to Wang, Yongqiang; Deng, Jiedan; Chen, Jinhong; Cao, Fei; Hou, Yongsheng; Yang, Yuhang; Deng, Xuemei; Yang, Jinru; Wu, Lingxi; Shao, Xiangfeng; Shi, Tao; Wang, Zhen. Reference of 1,2-Diphenyldisulfane The article mentions the following:

An application for dechalcogenization of aryl dichalcogenides via copper catalysis to synthesize aryl chalcogenides Ar1XAr2 [Ar1 = Ph, 4-MeOC6H4CH2, 4-O2NC6H4, etc.; Ar2 = Ph, 4-MeC6H4, 2-naphthyl, etc.; X = S, Se, Te] was disclosed. This approach was highlighted by the practical conditions, broad substrate scope and good functional group tolerance with several sensitive groups such as aldehyde, ketone, ester, amide, cyanide, alkene, nitro and methylsulfonyl. Furthermore, the robustness of this methodol. was depicted by the late-stage modification of estrone and synthesis of vortioxetine. Remarkably, synthesis of more challenging organic materials with large ring tension under milder conditions and synthesis of some halogen contained diaryl sulfides which could not be synthesized using metal-catalyzed coupling reactions of aryl halogen were successfully accomplished with this protocol. The results came from multiple reactions, including the reaction of 1,2-Diphenyldisulfane(cas: 882-33-7Reference of 1,2-Diphenyldisulfane)

1,2-Diphenyldisulfane(cas: 882-33-7) belongs to ethers. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Reference of 1,2-Diphenyldisulfane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

The author of 《Copper-Catalysed Suzuki-Miyaura Cross-Coupling of Highly Fluorinated Aryl Boronate Esters with Aryl Iodides and Bromides and Fluoroarene-Arene π-Stacking Interactions in the Products》 were Budiman, Yudha P.; Friedrich, Alexandra; Radius, Udo; Marder, Todd B.. And the article was published in ChemCatChem in 2019. Application In Synthesis of 1-Iodo-2-methoxybenzene The author mentioned the following in the article:

A combination of copper iodide and phenanthroline as the ligand is an efficient catalyst for Suzuki-Miyaura cross-coupling of highly fluorinated boronate esters (aryl-Bpin) with aryl iodides and bromides to generate fluorinated biaryls in good to excellent yields. This method represents a nice alternative to traditional cross-coupling methods which require palladium catalysts and stoichiometric amounts of silver oxide. The investigation revelaed that π···π stacking interactions dominated the mol. packing in the partly fluorinated biaryl crystals. They were present either between the arene and perfluoroarene, or solely between arenes or perfluoroarenes, resp. The results came from multiple reactions, including the reaction of 1-Iodo-2-methoxybenzene(cas: 529-28-2Application In Synthesis of 1-Iodo-2-methoxybenzene)

1-Iodo-2-methoxybenzene(cas: 529-28-2) participates in palladium catalyzed enantioselective Heck arylation of 2,3-dihydrofuran in the presence of chiral ionic liquids containing L-prolinate and L-lactate anions and non-chiral quaternary ammonium cations.Application In Synthesis of 1-Iodo-2-methoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

In 2019,Solar Energy included an article by Chen, Yung-Chung; Yen, Jui-Hua; Chung, Chung-Lin; Chen, Chih-Ping. Category: ethers-buliding-blocks. The article was titled 《Methoxy groups on bifluorenylidene-based hole transporting materials result in highly efficient and stable dopant-free inverted perovskite solar cells》. The information in the text is summarized as follows:

Three bifluororenylidene-based compounds featuring different numbers of methoxy groups (none for HTM-1, four for HTM-2, and eight for HTM-3) have been synthesized simply and inexpensively and applied as hole transporting materials (HTMs) in inverted perovskite solar cells (PSCs). For comparison, a typical inverted HTM material, PEDOT:PSS, was also applied in a corresponding inverted PSC. The corresponding cell performances were compared with respect to their number of methoxy groups. Of the PSCs containing the bifluororenylidene-based compounds, the HTM-2-based device exhibited the highest power conversion efficiency (PCE) of 12.0%, with a value of Jsc of 19.4 mA cm-2, a value of Voc of 0.94 V, and a fill factor of 65.6%. In addition, the PCE of this HTM-2-based device was higher than that (9.9%) of the PEDOT:PSS-based cell under similar testing conditions. The relatively high PCE of the HTM-2-based cell was due to its suitable energy levels, relatively high hole mobility, and relatively large grains. Furthermore, the HTM series of compounds were also more hydrophobic than PEDOT:PSS and, therefore, they imparted device stability superior to that of the PEDOT:PSS-based cell. In the experiment, the researchers used many compounds, for example, Bis(4-methoxyphenyl)amine(cas: 101-70-2Category: ethers-buliding-blocks)

Bis(4-methoxyphenyl)amine(cas: 101-70-2) is a diphenylamine derivative used as a chemical additive for cured rubber.Bis(4-methoxyphenyl)amine is highly toxic and may potentially induce chromosome abberation.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

In 2011,Liu, Run-feng; Zhang, Heng; Zhong, Wu published 《Preparation of 2-(2-((6-chlorohexyl)oxy)ethoxy)ethanamine》.Huaxue Shiji published the findings.Name: tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate The information in the text is summarized as follows:

A new method for the preparation of 2-(2-((6-chlorohexyl)oxy)ethoxy)ethanamine is described. 2-(2-Aminoethoxy)ethanol was protected by BOC group, followed by etherification and deprotection, providing the titled compd in overall yield of 11.4%. In the experimental materials used by the author, we found tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6Name: tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate)

tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. Name: tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem