Tag: M.W=150-200

An article Ligand-Controlled C-O Bond Coupling of Carboxylic Acids and Aryl Iodides: Experimental and Computational Insights WOS:000497548100001 published article about FORMING REDUCTIVE ELIMINATION; DIRECT ORTHO-ARYLATION; METAL-METAL BONDS; SUPPORTED PRECATALYSTS; OXIDATIVE ADDITION; PD-IV; PALLADIUM; COMPLEXES; HALIDES; ACTIVATION in [Li, Li; Song, Feifei; Wu, Yun-Dong; Zhang, Xinhao; Chen, Jiean; Huang, Yong] Peking Univ, Shenzhen Grad Sch, State Key Lab Chem Oncogen, Key Lab Chem Genom, Shenzhen 518055, Guangdong, Peoples R China; [Zhong, Xiumei; Zhang, Xinhao; Chen, Jiean] Shenzhen Bay Lab, Shenzhen 518055, Guangdong, Peoples R China; [Huang, Yong] Hong Kong Univ Sci Technol, Dept Chem, Kowloon, Clear Water Bay, Hong Kong, Peoples R China in 2020.0, Cited 90.0. Safety of 4-Nitrobenzoic acid. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

Palladium-catalyzed cross-coupling reactions between carboxylic acids and aryl halides have several possible competitive pathways. Decarboxylative C-C bond coupling and C-H arylation are well established in the literature. However, direct C-O bond coupling between carboxylic acids and aryl halides has received little success. In this report, we describe a protocol for exclusive C-O bond formation, enabled by a bidentate N,N-ligand such as 1,10-phenanthroline. The reaction is general for a broad range of carboxylic acids and iodoarenes. Experimental evidence and computational results suggest a high energy barrier for the alternative pathway of decarboxylative carbon-carbon bond coupling.

Safety of 4-Nitrobenzoic acid. Welcome to talk about 62-23-7, If you have any questions, you can contact Li, L; Song, FF; Zhong, XM; Wu, YD; Zhang, XH; Chen, J; Huang, Y or send Email.

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

HPLC of Formula: C7H5NO4. Chang, Z; Guillot, R; Boddaert, T; Aitken, DJ in [Boddaert, Thomas; Aitken, David J.] Univ Paris Saclay, Univ Paris Sud, CNRS UMR 8182, CP3A Organ Synth Grp,ICMMO, 15 Rue Georges Clemenceau, F-91405 Orsay, France; Univ Paris Saclay, Univ Paris Sud, CNRS UMR 8182, Serv Communs,ICMMO, 15 Rue Georges Clemenceau, F-91405 Orsay, France published Stereocontrolled Preparation of Diversely Trifunctionalized Cyclobutanes in 2019.0, Cited 47.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7.

The expedient and stereoselective syntheses of small libraries of trifunctionalized cyclobutane scaffolds bearing an acid, an amine, and a third functional group are described. Starting from a single precursor, the readily available protected derivative of all-cis-2-amino-3-hydroxycyclobutane-1-carboxylic acid, cis-trans stereoisomers are obtained following an S(N)2-type reaction, while all-trans stereoisomers are obtained using the same strategy preceded by a C1 epimerization reaction.

HPLC of Formula: C7H5NO4. Welcome to talk about 62-23-7, If you have any questions, you can contact Chang, Z; Guillot, R; Boddaert, T; Aitken, DJ or send Email.

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

Recently I am researching about DIELS-ALDER REACTIONS; ALPHA,BETA-UNSATURATED IMINES; TANDEM REACTION; 1,2,3-TRIAZOLES; TRANSANNULATION; CYCLOADDITION; 2H-AZIRINES; ANNULATION; ALKYNES; 1-SULFONYL-1,2,3-TRIAZOLES, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21801224]; Natural Science Foundation of Zhejiang provinceNatural Science Foundation of Zhejiang Province [LQ18B020009]; Scientific Research Foundation of Zhejiang Sci-Tech University [16062193-Y]. Published in PERGAMON-ELSEVIER SCIENCE LTD in OXFORD ,Authors: Xu, ZF; An, YH; Chen, YD; Duan, SG. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid. Quality Control of 4-Nitrobenzoic acid

A new synthetic application of N-sulfonyl-1,2,3-triazoles acting as a 1-aza-[4C] synthon via the 1,2-shift reaction of an alpha-imine rhodium carbene was developed for the synthesis of fused pyrimidine derivatives. The high reactivity of the strained three-membered 2H-azirine ring facilitated the unusual cyclization of electron-deficient dienes with electron-deficient dienophiles. The compatibility was good with common functionalities tolerated. Excellent chemoselectivity was observed, and no reactions occurred between the rhodium carbene and 2H-azirine. The products could be converted into seven-membered multi-functionalized 1H-1,4-diazepine derivatives, illustrating the potential application of the protocol in medium-sized N-heterocycle synthesis. (C) 2019 Elsevier Ltd. All rights reserved.

Quality Control of 4-Nitrobenzoic acid. Welcome to talk about 62-23-7, If you have any questions, you can contact Xu, ZF; An, YH; Chen, YD; Duan, SG or send Email.

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

Formula: C7H5NO4. I found the field of Chemistry very interesting. Saw the article Access to Phenothiazine Derivatives via Iodide-Mediated Oxidative Three-Component Annulation Reaction published in 2020.0, Reprint Addresses Zhang, M (corresponding author), South China Univ Technol, Key Lab Funct Mol Engn Guangdong Prov, Sch Chem & Chem Engn, Guangzhou 510641, Peoples R China.. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid.

Herein, a new iodide-mediated three-component annulation reaction of secondary anilines, cyclohexanones, and elemental sulfur is demonstrated, which allows access to various phenothiazines with the merits of formation of multiple chemical bonds in one single operation, high step and atom efficiency, readily available feedstocks and catalyst system, and good substrate and functional group compatibility. The developed chemistry capable of constructing novel phenothiazines with structural diversity offers a significant basis for further applications.

Formula: C7H5NO4. Welcome to talk about 62-23-7, If you have any questions, you can contact Chen, QH; Xie, R; Jia, HH; Sun, JL; Lu, GP; Jiang, HF; Zhang, M or send Email.

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

Authors Santos, SN; De Souza, GA; Pereira, TM; Franco, DP; Del Cistia, CD; Sant’Anna, CMR; Lacerda, RB; Kummerle, AE in ROYAL SOC CHEMISTRY published article about SOLID-PHASE SYNTHESIS; ASSISTED SYNTHESIS; ACETYLCHOLINESTERASE; DISCOVERY; 1,2,4-TRIAZOLES; DERIVATIVES; ABSORPTION; POTENT in [Santos, Sabrina Neves; de Souza, Gabriela Alves; Pereira, Thiago Moreira; Franco, Daiana Portella; Lacerda, Renata Barbosa; Kummerle, Arthur Eugen] Univ Fed Rural Rio Janeiro, Chem Inst, Mol Divers & Med Chem Lab, Lab Diversidade Mol & Quim Med LaDMol QM, BR-23989700 Seropedica, RJ, Brazil; [Santos, Sabrina Neves; de Souza, Gabriela Alves; Pereira, Thiago Moreira; Franco, Daiana Portella; Del Cistia, Catarina de Nigris; Sant’Anna, Carlos Mauricio R.; Lacerda, Renata Barbosa; Kummerle, Arthur Eugen] Univ Fed Rural Rio Janeiro, Programa Posgrad Quim PPGQ, BR-23989700 Seropedica, RJ, Brazil in 2019.0, Cited 39.0. Recommanded Product: 4-Nitrobenzoic acid. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

Herein we describe the development of an efficient one-pot regioselective synthesis protocol to obtain N-protected or N-deprotected 1,5-diaryl-3-amino-1,2,4-triazoles from N-acyl-N-Boc-carbamidothioates. This improved protocol using microwave irradiation and low reaction times (up to 1 h) furnished desired compounds in yields ranging from 50 to 84%. This chemistry is useful for a variety of aromatic groups with electronically diverse substituents. The design and correct derivation of the amino group led to compounds able to inhibit cholinesterases with good IC50 of up to 1 mu M. Also, the mode of action (mixed-type) and SAR analysis for this series of compounds was described by means of kinetic and molecular modelling evaluations, showing potential for this class of compounds as new scaffolds for this biological activity.

Recommanded Product: 4-Nitrobenzoic acid. Welcome to talk about 62-23-7, If you have any questions, you can contact Santos, SN; De Souza, GA; Pereira, TM; Franco, DP; Del Cistia, CD; Sant’Anna, CMR; Lacerda, RB; Kummerle, AE or send Email.

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

An article POCl3 promoted metal-free synthesis of tertiary amides by coupling of carboxylic acids and N,N-disubstituted formamides WOS:000465007200007 published article about BOND; AMINOCARBONYLATION; TRANSFORMATIONS; IODIDES; ARYL in [Bi, Xiaojing; Li, Junchen; Shi, Enxue; Li, Yu; Liu, Ying; Wang, Hongmei; Xiao, Junhua] State Key Lab NBC Protect Civilian, Beijing, Peoples R China in 2019, Cited 14. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. Formula: C7H5NO4

Herein we report a robust and synthetically useful catalyst-free amination methodology by the coupling of carboxylic acids and N-substituted formamides using POCl3 as a promoter. Versatile amides with a wide array of substituent groups were prepared within only 1 h in good to excellent yields. And even multi-substituted aromatic carboxylic acids could give the desired products with satisfactory results.

Formula: C7H5NO4. Welcome to talk about 62-23-7, If you have any questions, you can contact Bi, XJ; Li, JC; Shi, EX; Li, Y; Liu, Y; Wang, HM; Xiao, JH or send Email.

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

An article Amide Synthesis through the In Situ Generation of Chloro- and Imido-Phosphonium Salts WOS:000546100300092 published article about N-C CLEAVAGE; CARBOXYLIC-ACIDS; CATALYZED AMINOCARBONYLATION; AMINO-ACIDS; OXIDATIVE AMIDATION; FREE TRANSAMIDATION; SECONDARY AMIDES; ARYL IODIDES; METAL-FREE; ALDEHYDES in [Irving, Charles D.; Floreancig, Jack T.; Laulhe, Sebastien] Indiana Univ Purdue Univ Indianapolis IUPUI, Dept Chem & Chem Biol, Indianapolis, IN 46202 USA in 2020, Cited 84. Application In Synthesis of 4-Nitrobenzoic acid. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

We describe a methodology for the amidation of carboxylic acids by generating phosphonium salts in situ from N-chlorophthalimide and triphenylphosphine. Aliphatic, benzylic, and aromatic carboxylic acids can be transformed into their amide counter parts using primary and secondary amines. This functional group interconversion is achieved at room temperature in good to excellent yields. Mechanistic work shows the in situ formation of chloro- and imido-phosphonium salts that react as activating agents for carboxylic acids and generate an acyloxyphosphonium species.

Application In Synthesis of 4-Nitrobenzoic acid. Welcome to talk about 62-23-7, If you have any questions, you can contact Irving, CD; Floreancig, JT; Laulhe, S or send Email.

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

Recently I am researching about STEREOSELECTIVE-SYNTHESIS; ASYMMETRIC-SYNTHESIS; GLYCOSYLATION; 2-DEOXY-BETA-GLYCOSIDES; DIGITOXIN; SUGARS; ANTIBIOTICS; DONORS, Saw an article supported by the National Research Foundation of KoreaNational Research Foundation of Korea [NRF-2017R1A2B1010757]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Seo, K; Rhee, YH. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid. SDS of cas: 62-23-7

Here, we report a de novo synthetic strategy toward beta-2,6-dideoxypyranoglycosides. The key event is the ruthenium-catalyzed regioselective olefin migration of dihydropyran allylic acetals to homoallylic acetals. In combination with other metal-catalyzed reactions, this new protocol led to the synthesis of beta-2,6-dideoxypyranoglycosides in a highly efficient manner. Using this sequential metal catalysis, various mono-, di-, and trisaccharide forms of beta-2,6-dideoxypyranoglycosides were prepared.

SDS of cas: 62-23-7. Welcome to talk about 62-23-7, If you have any questions, you can contact Seo, K; Rhee, YH or send Email.

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

Application In Synthesis of 4-Nitrobenzoic acid. In 2019.0 J CHROMATOGR A published article about HYDROPHILIC INTERACTION CHROMATOGRAPHY; SILICA; ANION; SEPARATION; POLAR in [Wang, Xiang; Peng, Jingdong; Peng, Huanjun; Chen, Jun; Xian, Hong; Ni, Ranxi; Li, Shiyu; Long, Dengying; Zhang, Zhongying] Southwest Univ, Sch Chem & Chem Engn, Chongqing 400715, Peoples R China in 2019.0, Cited 36.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7.

The present work describes the preparation of two ionic liquid and carboxyl acid silane reagents via photo-initiated thiol-ene click chemistry that have been bonded to silica to afford two mixed-mode stationary phases (Sil-C4Im-C9Co and Sil-C9Im-C4Co). The two stationary phases provided satisfactory retention repeatability and efficiencies. The influence of acetonitrile content, salt concentration and pH of the mobile phase was investigated to clarify the retention properties of the prepared stationary phases. The results showed that the prepared Sil-C4Im-C9Co and Sil-C9Im-C4Co undergo multiple interactions with solutes under different chromatographic conditions. The retention mechanisms were further studied by the linear energy solvation relationship and Van’t Hoff plots. Finally, the stationary phases were employed to separate hydrophobic solutes (alkylbenzenes and polycyclic aromatic hydrocarbons) under reversed phase liquid chromatography (RPLC) mode, hydrophilic solutes (carboxylic acids, nucleosides and bases) under hydrophilic interaction liquid chromatography (HILIC) mode and inorganic anions under ion-exchange chromatography (IEC) mode, providing excellent performance and varying selectivity when compared with a commercial column. The bonding method in this work is feasible and the prepared stationary phases are promising when employed in RPLC/HILIC/IEC mixed-mode chromatography applications. (C) 2019 Elsevier B.V. All rights reserved.

Application In Synthesis of 4-Nitrobenzoic acid. Welcome to talk about 62-23-7, If you have any questions, you can contact Wang, X; Peng, JD; Peng, HJ; Chen, J; Xian, H; Ni, RX; Li, SY; Long, DY; Zhang, ZY or send Email.

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

HPLC of Formula: C7H5NO4. In 2020 CHEMISTRYSELECT published article about ACIDIC IONIC LIQUIDS; BUTYL ACETATE SYNTHESIS; DUAL SOLVENT-CATALYSTS; FACILE SYNTHESIS; FISCHER ESTERIFICATION; ALDEHYDES; SYSTEM; GREEN; CYCLOALKANONES; KETONES in [Bano, Kulsum; Sarkar, Ratan; Panda, Tarun K.] Indian Inst Technol Hyderabad, Dept Chem, Sangareddy 502285, Telangana, India; [Jain, Archana] Mahatma Gandhi Inst Technol, Dept Phys & Chem, Hyderabad 500075, Telangana, India in 2020, Cited 78. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7.

Bronsted acidic ionic liquids (BAILs) have been used as catalyst and solvent in organic synthesis, due to their negligible volatility, remarkable solubility, good catalytic activity, and easily structurally tunable properties. In the present study, we have investigated the catalytic efficiency of economically viable ionic liquids bearing different cations pyridinium ([PyH](+) and triethylammonium [TEAH](+)) for the esterification of aromatic acid with various aliphatic alcohols and crossed aldol condensation of aromatic aldehydes with cyclohexanone under ambient condition. We also examined the effect of various process parameters on the yield of aromatic esters and alpha,alpha’-bis(arylidene)cycloalkanones.

HPLC of Formula: C7H5NO4. Welcome to talk about 62-23-7, If you have any questions, you can contact Bano, K; Jain, A; Sarkar, R; Panda, TK or send Email.

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