Month: October 2021

Safety of 4-Nitrobenzoic acid. In 2019.0 CHEM-EUR J published article about ENANTIOSELECTIVE ACYL TRANSFER; ASYMMETRIC ESTERIFICATION; PIVALIC ANHYDRIDE; FACILE SYNTHESIS; DIPHENYLACETIC ACID; CARBOXYLIC-ACIDS; BASICITY SCALE; ALCOHOLS; SECONDARY; DERIVATIVES in [Qu, Shen; Greenhalgh, Mark D.; Smith, Andrew D.] Univ St Andrews, Sch Chem, EaStCHEM, St Andrews KY16 9ST, Fife, Scotland in 2019.0, Cited 104.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7.

An operationally simple isothiourea-catalysed acylative kinetic resolution of unprotected 1,1 ‘-biaryl-2,2 ‘-diol derivatives has been developed to allow access to axially chiral compounds in highly enantioenriched form (s values up to 190). Investigation of the reaction scope and limitations provided three key observations: i) the diol motif of the substrate was essential for good conversion and high s values; ii) the use of an alpha,alpha-disubstituted mixed anhydride (2,2-diphenylacetic pivalic anhydride) was critical to minimize diacylation and give high selectivity; iii) the presence of substituents in the 3,3 ‘-positions of the diol hindered effective acylation. This final observation was exploited for the highly regioselective acylative kinetic resolution of unsymmetrical biaryl diol substrates bearing a single 3-substituent. Based on the key observations identified, acylation transition state models have been proposed to explain the atropselectivity of this kinetic resolution.

About 4-Nitrobenzoic acid, If you have any questions, you can contact Qu, S; Greenhalgh, MD; Smith, AD or concate me.. Safety of 4-Nitrobenzoic acid

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

An article Synthesis of alpha-Quaternary Aldehydes via a Stereoselective Semi-Pinacol Rearrangement of Optically Active Epoxy Alcohols WOS:000480591800024 published article about CATALYTIC ENANTIOSELECTIVE CONSTRUCTION; UNPRECEDENTED STEREOCHEMICAL CONTROL; PRACTICAL ASYMMETRIC-SYNTHESIS; ALLYLIC ALKYLATION; NATURAL-PRODUCTS; ORGANOALUMINUM REAGENTS; CLAISEN REARRANGEMENT; STEREOGENIC CENTERS; SILYL ETHERS; THREO ALDOLS in [Hirama, Naomichi; Sakamoto, Ryu; Maruoka, Keiji] Kyoto Univ, Grad Sch Sci, Dept Chem, Sakyo Ku, Kyoto 6068502, Japan; [Maruoka, Keiji] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China in 2019.0, Cited 71.0. Recommanded Product: 62-23-7. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

This article describes a Lewis-acid-promoted semi-pinacol rearrangement of chiral epoxy alcohols to provide chiral beta-hydroxy aldehydes with a quaternary center at the alpha-position that are otherwise difficult to access in modern organic synthesis. The aldehydes thus obtained are highly useful synthetic intermediates, which is demonstrated by the synthesis of a serotonin antagonist.

About 4-Nitrobenzoic acid, If you have any questions, you can contact Hirama, N; Sakamoto, R; Maruoka, K or concate me.. Recommanded Product: 62-23-7

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Recently I am researching about SM-ND AGE; MG-SUITE; YOUNG; CONSTRAINTS; ORIGIN; CRUST; MOON; GEOCHEMISTRY; SYSTEMATICS; CHRONOLOGY, Saw an article supported by the U.S. Department of Energy by Lawrence Livermore National LaboratoryUnited States Department of Energy (DOE) [DE-AC5207NA27344, LLNL-JRNL-790599]; Laboratory Directed Research and Development grant [17-ERD-001]. Published in ELSEVIER in AMSTERDAM ,Authors: Sio, CK; Borg, LE; Cassata, WS. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid. Recommanded Product: 62-23-7

Ferroan anorthosite suite (FAS) rocks are widely interpreted to represent primordial lunar crust. Despite their importance in pinpointing the timing of lunar crust formation, robust chronological investigations for this rock type are scarce. Here, we report the Ar-Ar, Rb-Sr, and Sm-Nd isotopic systematics for the FAS troctolitic anorthosite 62237. The Ar-Ar isotopic system has been reset by a thermal event at 3710 +/- 48 Ma, and the Rb-Sr isotopic systematics has been disturbed such that a Rb-Sr isochron age cannot be determined. However, an internal isochron for the Sm-Nd isotopic system has yielded an age of 4350 +/- 73 Ma (MSWD = 2.0) with an initial epsilon Nd-143(CHUR) of -0.53 +/- 0.26. The mineral and whole-rock fractions of 62237 plot on the same internal isochron as FAS sample 60025. The combined datasets define an age of 4372 +/- 35 Ma (MSWD = 4.0) with an initial epsilon Nd-143(CHUR) of -0.17 +/- 0.22. Literature Sm-Nd data for FAS and Mg-suite whole-rocks also plot on the 60025-62237 isochron. The coherence of data from both FAS and Mg-suite rocks examined thus far suggests that both rock suites formed contemporaneously from identical, or nearly identical, sources. In addition, the concordance of FAS and Mg-suite ages suggests that primordial crust solidification either involved both magmatic suites, or that Mg-suite magmatism was contemporaneous with FAS magmatism within resolution of the Sm-Nd chronometer. The ages for FAS and Mg-suite also coincide with the formation ages of the mare basalt source regions and urKREEP. Ferroan anorthosite suite rocks and urKREEP are thought to represent primordial LMO solidification products, whereas Mg-suite and the mare basalt source regions are argued to represent mixtures of various LMO crystallization products that were formed during density-driven overturn of the LMO. The concordance of ages implies that the 4372 +/- 35 Ma Sm-Nd isochron records the age of mantle overturn, and that overturn occurred during, or shortly after, solidification of the LMO. (C) 2020 Elsevier B.V. All rights reserved.

Recommanded Product: 62-23-7. About 4-Nitrobenzoic acid, If you have any questions, you can contact Sio, CK; Borg, LE; Cassata, WS or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

I found the field of Chemistry very interesting. Saw the article Synthesis of novel alpha-acyloxyamides using choline chloride-based deep eutectic solvent published in 2019. Formula: C7H5NO4, Reprint Addresses Yavari, I (corresponding author), Tarbiat Modares Univ, Dept Chem, POB 14115-175, Tehran, Iran.. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid

The Passerini three-component reaction between acenaphthylene-1,2-dione, alkyl isocyanides, and carboxylic acids, leading to the formation of alpha-acyloxyamides in common organic solvents (CH2Cl2, MeOH) and choline chloride-based deep eutectic solvent, is described. The reaction in the latter solvent proceeded faster compared to common organic solvents. The structure of a typical product was confirmed by X-ray crystallography. [GRAPHICS] .

Formula: C7H5NO4. About 4-Nitrobenzoic acid, If you have any questions, you can contact Yavari, I; Khajeh-Khezri, A; Ghorbanzadeh, M; Halvagar, MR or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Category: phthalazines. In 2020.0 GREEN CHEM published article about CHEMOSELECTIVE HYDROGENATION; 1 ATM; REDUCTION; CATALYST; NITROBENZENE; PERFORMANCE; ANILINE; BONDS; H-2 in [Sun, Shuting; Zhao, Ruixiang; Jv, Xinchun; Hu, Pan; Zhang, Qun; Wang, Bo] Hainan Univ, Minist Educ, Key Lab Adv Mat Trop Isl Resources, 58 Renmin AVE, Haikou 570228, Hainan, Peoples R China; [Wang, Bo] Shandong Agr Univ, Coll Sci & Engn, 7 Panhe AVE, Tai An 271017, Shandong, Peoples R China; [Du, Muyao] Shandong Univ Sci & Technol, Sch Chem & Environm Engn, 579 Qianwangang Rd, Qingdao 266590, Peoples R China in 2020.0, Cited 21.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7.

The hydrogenation of nitroarenes is one of the most important strategies for the preparation of anilines. However, it is still a great challenge to develop mild and efficient synthetic routes toward aniline synthesis, particularly those employing both non-precious metal catalysts and low-pressure H-2. Herein, we report a highly efficient protocol for the selective hydrogenation of nitroarenes in neutral H2O using H-2(1 atm) over a heterogeneous Zn(0) catalyst under mild conditions. The nitro groups of an array of nitroarenes can be converted into -NH(2)with up to 99% conversions and a selectivity of >99%, even when functionalized with easily reducible substituents, or in the presence of aromatic ketones or styrene. This study might open an avenue for the selective hydrogenation of nitroarenes over a zinc catalyst using 1 atm H-2.

About 4-Nitrobenzoic acid, If you have any questions, you can contact Sun, ST; Du, MY; Zhao, RX; Jv, XC; Hu, P; Zhang, Q; Wang, B or concate me.. Category: phthalazines

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

An article Synthesis and antiviral activity of some imidazo[1,2-b] [1,3,4]thiadiazole carbohydrate derivatives WOS:000471601300007 published article about DESIGN; FEVER; ACID in [Fascio, Mirta L.; D’Accorso, Norma B.] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Quim Organ, Buenos Aires, DF, Argentina; [Damonte, Elsa B.] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Quim Biol, Buenos Aires, DF, Argentina; [Fascio, Mirta L.; D’Accorso, Norma B.] Univ Buenos Aires, CONICET, Ctr Invest Hidratos Carbono CIHIDECAR, Buenos Aires, DF, Argentina; [Sepulveda, Claudia S.; Damonte, Elsa B.] Univ Buenos Aires, CONICET, Inst Quim Biol, Fac Ciencias Exactas & Nat IQUIBICEN, Buenos Aires, DF, Argentina in 2019.0, Cited 21.0. Category: phthalazines. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

Herein we describe the synthesis of imidazo [2,1-b][1,3,4]thiadiazoles from carbohydrates with D-ribo and D-xylo configuration. The antiviral activity of these compounds was tested against Junin virus (the etiological agent of Argentine hemorrhagic fever). The p-chlorophenyl derivatives showed antiviral activity in a range of micromolar concentration.

Category: phthalazines. About 4-Nitrobenzoic acid, If you have any questions, you can contact Fascio, ML; Sepulveda, CS; Damonte, EB; D’Accorso, NB or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Qiu, QQ; Zhu, JL; Chen, QT; Jiang, ZQ; Xu, JT; Jiang, XT; Huang, WL; Liu, ZQ; Ye, J; Xu, XJ in [Qiu, Qianqian; Zhu, Jilan; Chen, Qiutong; Jiang, Ziqian; Xu, Jiting; Jiang, Xueting; Liu, Zhongquan; Ye, Jing; Xu, Xiaojuan] Yancheng Teachers Univ, Sch Pharm, Jiangsu Prov Key Lab Coastal Wetland Bioresources, Yancheng 224007, Peoples R China; [Huang, Wenlong] China Pharmaceut Univ, Ctr Drug Discovery, State Key Lab Nat Med, Nanjing, Jiangsu, Peoples R China; [Huang, Wenlong] China Pharmaceut Univ, Jiangsu Key Lab Drug Discovery Metab Dis, Nanjing, Jiangsu, Peoples R China published Discovery of aromatic amides with triazole-core as potent reversal agents against P-glycoprotein-mediated multidrug resistance in 2019, Cited 49. Category: phthalazines. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7.

P-glycoprotein (P-gp)-mediated multidrug resistance (MDR) is a major impediment for clinical cancer therapy. 19 novel aromatic amides with triazole-core as MDR reversal agents were designed and synthesized via click chemistry to reverse MDR. Among them, compound 42 was identified as the most promising candidate with high potency (EC50 = 78.1 +/- 5.4 nM), low cytotoxity (SI > 1282) and persistent duration in reversing doxorubicin (DOX) resistance in K562/A02 cells. 42 also enhanced the potency of other P-gp associated cytotoxic agents with different structures. In further study, remarkably increased intracellular accumulation of Rh123 and DOX in K562/A02 cells was achieved by compound 42, while CYP3A4 activity had no change by compound 42. These results indicate that compound 42 as a relatively safe modulator of P-gp-mediated MDR has good potential for further development.

Category: phthalazines. About 4-Nitrobenzoic acid, If you have any questions, you can contact Qiu, QQ; Zhu, JL; Chen, QT; Jiang, ZQ; Xu, JT; Jiang, XT; Huang, WL; Liu, ZQ; Ye, J; Xu, XJ or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Recently I am researching about CHARGE-TRANSPORT PROPERTIES; PLATELET-AGGREGATION; MOLECULAR DOCKING; CROSS-TALK; ANTIOXIDANTS; RESONANCE; ASPIRIN; DRUGS, Saw an article supported by the Higher Education Commission of PakistanHigher Education Commission of Pakistan; Deanship of Scientific Research at King KhalidUniversity [R.G.P.2/15/40]. HPLC of Formula: C7H5NO4. Published in WALTER DE GRUYTER GMBH in BERLIN ,Authors: Ramzan, A; Nazeer, A; Irfan, A; Al-Sehemi, AG; Verpoort, F; Khatak, ZA; Ahmad, A; Munawar, MA; Khan, MA; Basra, MAR. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid

A novel series of 2-(3-methyl-1,6-diphenyl-1H-pyrazolo[3,4-b]pyridin4-yl)-5-aryl-1,3,4-oxadiazoles (4a-4h) has been synthesized from corresponding hydrazones (3a-3h) and evaluated their antiplatelet aggregation effect induced by arachidonic acid and collagen. Spectral data and elemental evaluation were used to confirm the structure of the compounds while molecular docking against cyclooxygenase 1 and 2 (COX1 & COX2) and quantitative structure-activity relationship (QSAR) were performed in describing their antiplatelet potential. All synthesized compound exhibited more than 50% platelet aggregation inhibition against both arachidonic acid and collagen. Antiplatelet activities results showed that 4b and 4f compounds have highest % inhibition against arachidonic acid. High Egap and ionization potential values showed that the compound 4d, 4e and 4f were supposed to be more active and good electron donor while 4b, 4c, 4d, 4e, 4g and 4h might be more active due to more electrophilic sites. Interaction with more than one residues in the binding pocket of COX-1 in comparison with aspirin and ligand efficacy (LE) consequences showed that compounds have excellent action potential for COX-1. Computational evaluations are in good agreement with antiplatelet activities of the compounds. All compounds might be promising antiplatelet agents especially 4b, 4f and helpful in the synthesis of new drugs for the treatment of cardiovascular diseases (CVDs).

About 4-Nitrobenzoic acid, If you have any questions, you can contact Ramzan, A; Nazeer, A; Irfan, A; Al-Sehemi, AG; Verpoort, F; Khatak, ZA; Ahmad, A; Munawar, MA; Khan, MA; Basra, MAR or concate me.. HPLC of Formula: C7H5NO4

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

An article Retention of acidic and basic analytes in reversed phase column using fluorinated and novel eluent additives for liquid chromatography-tandem mass spectrometry WOS:000517851300016 published article about ELECTROSPRAY; FLUOROALCOHOLS; PROTEINS; ALCOHOLS; PH in [Veigure, Ruta; Lossmann, Krit; Hecht, Max; Parman, Elisabeth; Born, Rasmus; Leito, Ivo; Herodes, Koit; Kipper, Karin] Univ Tartu, Inst Chem, 14a Ravila St, EE-50411 Tartu, Estonia; [Veigure, Ruta; Hecht, Max; Kipper, Karin] St Georges Univ London, Analyt Serv Int, Cranmer Terrace, London SW17 0RE, England in 2020.0, Cited 18.0. SDS of cas: 62-23-7. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

This research focuses on retention mechanisms in a LC column with C18 stationary phase when novel eluent additives (HFIP, HFTB and TFE as well as NFTB and perfluoropinacol) are used. The retention factors between novel eluent additives and conventional ones like ammonium acetate and ammonium bicarbonate at different eluent pH values were compared. A simple set of drug-like molecules, widely spread over different logP values, containing protonated and deprotonated acids and bases was selected for this investigation. HFIP, HFTB, NFTB and PP demonstrated strong influence on basic polar analytes in basic medium. These additives drastically increased retention. A decrease in retention was observed for acidic analytes when novel eluent additives were used. Additionally, for the first time, the absolute pH (pH(abs)) scale was used for expressing the mobile phase pH. (C) 2020 The Authors. Published by Elsevier B.V.

SDS of cas: 62-23-7. About 4-Nitrobenzoic acid, If you have any questions, you can contact Veigure, R; Lossmann, K; Hecht, M; Parman, E; Born, R; Leito, I; Herodes, K; Kipper, K or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Recently I am researching about CROSS-COUPLINGS; ENANTIOSELECTIVE ADDITION; ESTERIFICATION; ACTIVATION; CONVERSION; REAGENTS; ALKENES, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21931010]; National Key Research and Development Program of China [2017YFA0207302]; Program for Changjiang Scholars and Innovative Research Team in University of the Ministry of Education, China. Published in SCIENCE PRESS in BEIJING ,Authors: Chen, H; Chen, DH; Huang, PQ. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid. Name: 4-Nitrobenzoic acid

N-Acylpyrrole-type amides are a class of versatile building blocks in asymmetric synthesis. We report that by employing Ni(COD)(2)/2,2 ‘-bipyridine (5 mol%) catalytic system, the direct, catalytic alcoholysis of N-acylpyrrole-type aromatic and aliphatic amides with both primary and secondary alcohols can be achieved efficiently under very mild conditions (rt, 1 h) even at gram scale. By increasing the catalyst loading to 10 mol%, prolonging reaction time (18 h), and/or elevating reaction temperature to 50 degrees C/80 degrees C, the reaction could be extended to both complex and hindered N-acylpyrroles as well as to N-acylpyrazoles, Nacylindoles, and to other (functionalized) primary and secondary alcohols. In all cases, only 1.5 equiv. of alcohol were used. The value of the method has been demonstrated by the racemization-free, catalytic alcoholysis of chiral amides yielded from other asymmetric methodologies.

Name: 4-Nitrobenzoic acid. About 4-Nitrobenzoic acid, If you have any questions, you can contact Chen, H; Chen, DH; Huang, PQ or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem