Month: October 2022

In 2019,Organic & Biomolecular Chemistry included an article by Fang, Yuanding; Zhao, Rong; Yao, Yuan; Liu, Yang; Chang, Denghu; Yao, Ming; Shi, Lei. Recommanded Product: 2-Hydroxyphenylboronic acid. The article was titled 《Trichloroacetonitrile as an efficient activating agent for the ipso-hydroxylation of arylboronic acids to phenolic compounds》. The information in the text is summarized as follows:

A metal-free and base-free Cl3CCN mediated method was developed for the ipso-hydroxylation of aryl boronic acids to their corresponding phenols which was promoted by a key unstable Lewis adduct intermediate. This transformation was broad functional group tolerance and late-stage functionalization was successful as well. After simple investigation, two pathways (radical/ionic mechanism) were suggested and the beneficial action of blue light needs to be further studied. In the experimental materials used by the author, we found 2-Hydroxyphenylboronic acid(cas: 89466-08-0Recommanded Product: 2-Hydroxyphenylboronic acid)

2-Hydroxyphenylboronic acid(cas: 89466-08-0) belongs to acyl phenylboronic acid. Phenylboronic acid (PBA) has been used to extract β-blockers (a class of aminoalcohol-containing drugs) from aqueous solution, rat, and human plasma. Recommanded Product: 2-Hydroxyphenylboronic acid

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

In 2019,ACS Applied Materials & Interfaces included an article by Xiao, Ankang; Zhang, Zhe; Shi, Xiansong; Wang, Yong. Reference of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde. The article was titled 《Enabling Covalent Organic Framework Nanofilms for Molecular Separation: Perforated Polymer-Assisted Transfer》. The information in the text is summarized as follows:

Covalent organic frameworks (COFs) with ordered arrays of sub-2 nm regular pores are drawing increasing attention in membrane separation, and it remains highly desirable for effective and controllable strategies to fabricate COF-based membranes. Herein, we demonstrate a perforated polymer-assisted transfer strategy enabling COF nanofilms for mol. separation Solvothermal synthesis is used for the confined growth of TpPa, a stable, imine-linked COF, on the smooth surfaces of silicon substrates. Continuous, crystalline COF nanofilms are obtained, and their thicknesses are tunable in the range from a few tens to several hundred nanometers depending on monomer concentrations and reaction time. A block copolymer layer is coated on the COF nanofilms, which is then perforated to produce interconnected mesopores by the mechanism of selective swelling-induced pore generation. The perforated polymer coating functions as a protective but permeable layer enabling the easy transfer of the COF nanofilm onto porous substrates. Thus, we obtain a new type of composite membranes with the microporous COF nanofilm as the selective layer, sandwiched between the macroporous substrate and the mesoporous protective layer. The composite membranes exhibit good separation performances with water permeance up to ∼51 L m-2 h-1 bar-1 and high rejection rates to various dyes. This work demonstrates a new method to prepare COF-based membranes for mol. separation, and the invented perforated polymer-assisted transfer technol. is expected to find applications in transferring other ultrathin materials to demanded substrates. The results came from multiple reactions, including the reaction of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4Reference of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde)

2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4) is a member of phloroglucinol derivatives.Reference of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehydeFor acyl phloroglucinols, it is considered the largest category of compounds among phloroglucinols of natural characteristics.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

In 2019,Journal of Controlled Release included an article by Luebtow, Michael M.; Nelke, Lena C.; Seifert, Julia; Kuehnemundt, Johanna; Sahay, Gaurav; Dandekar, Gudrun; Nietzer, Sarah L.; Luxenhofer, Robert. Product Details of 156-87-6. The article was titled 《Drug induced micellization into ultra-high capacity and stable curcumin nanoformulations: Physico-chemical characterization and evaluation in 2D and 3D in vitro models》. The information in the text is summarized as follows:

Here, we report on a novel nanoformulation of CUR that enables CUR concentrations in water of at least 50 g/L with relative drug loadings of >50 wt% and high dose efficacy testing in 3D tumor models. Despite this high loading and concentration, the CUR nanoformulation comprises polymer-drug aggregates with a size <50 nm. Most interestingly, this is achieved using an amphiphilic block copolymer, that by itself does not form micelles due to its limited hydrophilic/lipophilic contrast. The ultra-high loaded nanoformulations exhibit a very good stability, reproducibility and redispersibility. In order to test effects of CUR in conditions closer to an in vivo situation, we utilized a 3D tumor test system based on a biol. de-cellularized tissue matrix that better correlates to clin. results concerning drug testing. We found that in comparison to 2D culture, the invasively growing breast cancer cell line MDA-MB-231 requires high concentrations of CUR for tumor cell eradication in 3D. In addition, we supplemented a 3D colorectal cancer model of the malignant cell line SW480 with fibroblasts and observed also in this invasive tumor model with stroma components a decreased tumor cell growth after CUR application accompanied by a loss of cell-cell contacts within tumor cell clusters. In a flow bioreactor simulating cancer cell dissemination, nanoformulated CUR prevented SW480 cells from adhering to a collagen scaffold, suggesting an anti-metastatic potential of CUR. In addition to this study using 3-Aminopropan-1-ol, there are many other studies that have used 3-Aminopropan-1-ol(cas: 156-87-6Product Details of 156-87-6) was used in this study.

3-Aminopropan-1-ol(cas: 156-87-6) belongs to anime. Nitrous acid converts secondary amines (aliphatic or aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl group is eliminated as an aldehyde or ketone, along with nitrous oxide, N2O.Product Details of 156-87-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《Mediator and Additive Free Trifluoromethyl-Fluorination of Terminal Alkenes by Persistent Perfluoroalkyl Radical》 were Sato, Azusa; Ponomarenko, Maksym V.; Ono, Taizo; Roeschenthaler, Gerd-Volker; Soloshonok, Vadim A.. And the article was published in European Journal of Organic Chemistry in 2019. Related Products of 821-41-0 The author mentioned the following in the article:

It was found that the persistent perfluoro-3-ethyl-2,4-dimethyl-3-pentyl radical (PPFR) could serve as a source of both trifluoromethyl-radical and fluorine atom in the reactions with terminal olefins. The dual reactivity of the persistent PPFR allowed for both trifluoromethylation and fluorination of terminal olefins. This new approach towards di-functionalized 1-CF3-2-F-alkanes RCHFCH2CF3 [R = CH2HC(CO2Et)2, Bn, 3-ClC6H4CH2, etc.] demonstrated the widespread synthetic potential. Preliminary data strongly suggested potentially high synthetic value of this methodol. new transformation. The results came from multiple reactions, including the reaction of 5-Hexen-1-ol(cas: 821-41-0Related Products of 821-41-0)

5-Hexen-1-ol(cas: 821-41-0) is a volatile organic compound. Further, it is used to prepare 6-bromo-hex-1-ene by reaction with phosphorus tribromide.Related Products of 821-41-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《Selective trimethylsilylation of alcohols and phenols with hexamethyldisilazane catalyzed by LaCoO3 perovskite》 were Mehdipour, Ebrahim; Baharlouei, Ehsan; Zarnegar, Zohre. And the article was published in Iranian Chemical Communication in 2019. Name: 3-Pyridinemethanol The author mentioned the following in the article:

Trimethylsilylation of alcs. and phenols were carried out under solvent-free conditions with hexamethyldisilazane (HMDS) using LaCoO3 perovskite. LaCoO3 as an efficient catalyst accelerated this reaction under milder condition. The advantages of this method are evident regarding, easy separation, low cost and low catalyst loading, lack of pollution, easy work-up, and selective protection of primary and secondary alcs. After reading the article, we found that the author used 3-Pyridinemethanol(cas: 100-55-0Name: 3-Pyridinemethanol)

3-Pyridinemethanol(cas: 100-55-0) belongs to pyridine. Pyridines form stable salts with strong acids. Pyridine itself is often used to neutralize acid formed in a reaction and as a basic solvent. Name: 3-Pyridinemethanol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《Reaction condition controlled nickel(II)-catalyzed C-C cross-coupling of alcohols》 were Zhang, Meng-Juan; Li, Hong-Xi; Young, David J.; Li, Hai-Yan; Lang, Jian-Ping. And the article was published in Organic & Biomolecular Chemistry in 2019. SDS of cas: 873-75-6 The author mentioned the following in the article:

A controlled approach to a diverse range of β-alkylated secondary alcs., α-alkylated ketones and α,β-unsaturated ketones using the acceptorless dehydrogenation coupling methodol. employing a Ni(II) 4,6-dimethylpyrimidine-2-thiolate cluster catalyst under different reaction conditions was reported. This catalyst could tolerate a wide range of substrates and exhibited a high activity for the annulation reaction of secondary alcs. with 2-aminobenzyl alcs. to yield quinolines. This work is an example of precise chemoselectivity control by careful choice of reaction conditions. In the part of experimental materials, we found many familiar compounds, such as (4-Bromophenyl)methanol(cas: 873-75-6SDS of cas: 873-75-6)

(4-Bromophenyl)methanol(cas: 873-75-6) undergoes three-component reaction with acetylferrocene and arylboronic acid to give ferrocenyl ketones containing biaryls.SDS of cas: 873-75-6 It undergoes efficient trimethylsilylation reaction with 1,1,1,3,3,3-hexamethyldisilazane in the presence of catalytic amount of aspartic acid in acetonitrile.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《N-Doped Yellow TiO2 Hollow Sphere-Mediated Visible-Light-Driven Efficient Esterification of Alcohol and N-Hydroxyimides to Active Esters》 were Singha, Krishnadipti; Ghosh, Subhash Ch.; Panda, Asit Baran. And the article was published in Chemistry – An Asian Journal in 2019. Safety of 3-Pyridinemethanol The author mentioned the following in the article:

A simple synthetic protocol for N-doped yellow TiO2 (N-TiO2) hollow spheres as an efficient visible-light-active photocatalyst using aqueous titanium peroxocarbonate complex (TPCC) solution as precursor and NH4OH was developed. In the developed strategy, the ammonium ion of TPCC and NH4OH acts as nitrogen source and structure-directing agent. The synthesized N-TiO2 hollow spheres were capable of promoting the synthesis of active esters ArCO2R [Ar = Et, 4-ClC6H4, 2-furyl, etc.; R = 2,5-dioxopyrrolidin-1-yl, 1,3-dioxoisoindolin-2-yl] of N-hydroxyimide and alc. through simultaneous selective oxidation of alc. to aldehyde followed by cross-dehydrogenative coupling (CDC) under ambient conditions upon irradiation of visible light. It was possible to develop a novel and cost-effective one-pot strategy for the synthesis of important esters and amides on gram scale using the developed strategy. The catalytic activity of N-TiO2 hollow spheres was much superior to that of other reported N-TiO2 samples as well as TiO2 with varying morphol. In addition to this study using 3-Pyridinemethanol, there are many other studies that have used 3-Pyridinemethanol(cas: 100-55-0Safety of 3-Pyridinemethanol) was used in this study.

3-Pyridinemethanol(cas: 100-55-0) belongs to pyridine. When pyridine is adsorbed on oxide surfaces or in porous materials, the following species are commonly observed: (i) pyridine coordinated to Lewis acid sites, (ii) pyridine H-bonded to weakly acidic hydroxyls, and (iii) protonated pyridine. At high coverage, physisorbed pyridine and protonated dimers can also be observed.Safety of 3-Pyridinemethanol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《Hydrophilic scaffolds of oxime as the potent catalytic inactivator of reactive organophosphate》 were Tang, Shengzhuang; Wong, Pamela T.; Cannon, Jayme; Yang, Kelly; Bowden, Sierra; Bhattacharjee, Somnath; O′Konek, Jessica J.; Choi, Seok Ki. And the article was published in Chemico-Biological Interactions in 2019. Quality Control of 2-Aminopropane-1,3-diol The author mentioned the following in the article:

Despite its efficacy as a skin decontaminant of reactive organophosphates (OP), Dekon 139-a potassium salt of 2,3-butanedione monooxime (DAM)-is associated with adverse events related to percutaneous absorption largely due to its small size and lipophilicity. In order to address this physicochem. issue, we synthesized and evaluated the activity of a focused library of 14 hydrophilic oxime compounds, each designed with either a DAM or monoisonitrosoacetone (MINA) oxime tethered to a polar or charged scaffold in order to optimize the size, hydrophilicity, and oxime acidity. High-throughput colorimetric assays were performed with paraoxon (POX) as a model OP to determine the kinetics of POX inactivation by these compounds under various pH and temperature conditions. This primary screening led to the identification of 6 lead compounds, predominantly in the MINA series, which displayed superb catalytic activity by reducing the POX half-life (t1/2) by 2-3 fold relative to Dekon 139. Our mechanistic studies show that POX inactivation by the oxime compounds occurred faster at a higher temperature and in a pH-dependent manner in which the neg. charged oximate species is = 10-fold more effective than the neutral oxime species. Lastly, using one of the lead compounds, we demonstrated its promising efficacy for POX decontamination in porcine skin ex vivo, and showed its potent ability to protect acetylcholine esterase (AChE) through POX inactivation. In summary, we report the rational design and chem. biol. validation of novel hydrophilic oximes which address an unmet need in therapeutic OP decontamination. In the experimental materials used by the author, we found 2-Aminopropane-1,3-diol(cas: 534-03-2Quality Control of 2-Aminopropane-1,3-diol)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Primary amines having a tertiary alkyl group (R3CNH2) are difficult to prepare with most methods but are made industrially by the Ritter reaction. In this method a tertiary alcohol reacts with hydrogen cyanide (HCN) in the presence of a concentrated strong acid; a formamide, RNH―CHO, is formed first, which then undergoes hydrolysis.Quality Control of 2-Aminopropane-1,3-diol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《Influence of polyethylene glycol molecular weight on the anticancer drug delivery of pH-sensitive polymeric micelle》 were Shan, Xiaotian; Mao, Jing; Long, Miaomiao; Ahmed, Kamel S.; Sun, Changling; Qiu, Lipeng; Chen, Jinghua. And the article was published in Journal of Applied Polymer Science in 2019. Electric Literature of C3H9NO2 The author mentioned the following in the article:

Polyethylene glycol (PEG) and pH-sensitive polymers have been widely utilized in anticancer drug delivery systems due to their characteristics of prolonging circulation time and tumor-responsive drug release. However, the effect of PEG mol. weight on the delivery of anticancer drug-encapsulating pH-sensitive polymer micelles has been poorly studied. Therefore, a simple method was used to prepare pH-sensitive doxorubicin (DOX)-loaded micelles (DOX/POD) based on polyethylene glycol-2-(octadecyloxy)-1, 3-dioxan-5-amine (POD) polymers, and the influence of PEG mol. weights (1 K, 2 K, and 5 K) on in vitro drug release and antitumor effect was further studied. Interestingly, as the mol. weight increased, the release amount of DOX was augmented. While the cytotoxicity and cellular uptake were increased, the mol. weight was decreased. It is reasonable to speculate that the high mol. weight of PEG may promote the dissolution rate of DOX, and their micelles with uncompact structure are being prone to disassembly in an acid environment. However, the low mol. weight of PEG may contribute to the formation of compact POD micelles, which make it easier to be uptaken by tumor cells resulting in the enhanced antitumor effect. Taken together, the results indicate that pH-sensitive POD micelles with low mol. weight can achieve the efficient delivery of drugs, and PEG mol. weight in pH-sensitive nanocarriers may influence the antitumor effect. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47854. The results came from multiple reactions, including the reaction of 2-Aminopropane-1,3-diol(cas: 534-03-2Electric Literature of C3H9NO2)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Electric Literature of C3H9NO2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

《N-Heterocyclic Carbene-Catalyzed Activation of Ynals for the Construction of Functional Pyridines》 was published in Asian Journal of Organic Chemistry in 2020. These research results belong to Li, Jia-Hui; Duan, Xiao-Yong; Tian, Zhao-Hui; Zheng, Yi-Fan; Qi, Jing. Electric Literature of C9H11NO The article mentions the following:

N-heterocyclic carbene-catalyzed activation of ynals for rapid synthesis of pyridine derivatives with important utilities was reported. This successful strategy using NHC-bound alkynyl acyl azolium as the key intermediate further improved the application of N-Ts 2-aminoacrylate as a nucleophile. Importantly, this work introduced an ester substituent to pyridines that was easily transformed to other functional groups.(1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-ol(cas: 126456-43-7Electric Literature of C9H11NO) was used in this study.

(1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-ol(cas: 126456-43-7) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.Electric Literature of C9H11NO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts