Category: esters-buliding-blocks

《Regio- and stereoselective synthesis of (Z)-(2,3-dihydro-1,4-thiaselenin-2-yl) vinyl sulfides from 2-bromomethyl-1,3-thiaselenole under phase-transfer catalysis conditions》 was published in Chemistry of Heterocyclic Compounds (New York, NY, United States) in 2020. These research results belong to Filippov, Andrey S.; Amosova, Svetlana V.; Potapov, Vladimir A.. Application In Synthesis of Ethyl propiolate The article mentions the following:

A one-pot regio- and stereoselective method for the synthesis of previously unknown (Z)-(2,3-dihydro-1,4-thiaselenin-2-yl) vinyl sulfides I (R = OMe, OEt, Ph; R1 = H, COOMe, COOEt) based on 2-bromomethyl-1,3-thiaselenole and activated acetylenes R1CCC(O)R at room temperature under phase-transfer catalysis conditions in 90-96% yields has been developed.Ethyl propiolate(cas: 623-47-2Application In Synthesis of Ethyl propiolate) was used in this study.

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Application In Synthesis of Ethyl propiolate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

The author of 《Polyacrylonitrile fiber with strongly acidic electrostatic microenvironment: Highly efficient and recyclable heterogeneous catalyst for the synthesis of heterocyclic compounds》 were Xiao, Jian; Xu, Gang; Wang, Lu; Li, Pengyu; Zhang, Wenqin; Ma, Ning; Tao, Minli. And the article was published in Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) in 2019. Synthetic Route of C7H12O3 The author mentioned the following in the article:

Four categories of sulfonic acid functionalized fiber catalysts with different surface microenvironments were synthesized by covalent grafting using polyacrylonitrile fiber (PANF) as the support. After the effect of acid structure on catalytic activity was investigated by Friedlander reaction, PANEOSF was chosen for the synthesis of quinolines and coumarin derivatives with high yields and extensive substrate scope (51 examples) in ethanol or water. The effect of electrostatic microenvironment and solvent was discussed and a “”release-catch-release-catch”” catalytic pattern was proposed accordingly. PANEOSF can be easily recycled for 20 times without any decrease of catalytic activity. In the experimental materials used by the author, we found Ethyl 3-oxopentanoate(cas: 4949-44-4Synthetic Route of C7H12O3)

Ethyl 3-oxopentanoate(cas: 4949-44-4) belongs to ketone compounds. They are most widely used as solvents, especially in industries manufacturing explosives, lacquers, paints, and textiles. Ketones are also used in tanning, as preservatives, and in hydraulic fluids.Synthetic Route of C7H12O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2019,Materials Science & Engineering, C: Materials for Biological Applications included an article by Li, Heran; Wu, Xueqian; Yang, Baixue; Li, Jing; Xu, Lu; Liu, Hongzhuo; Li, Sanming; Xu, Jinghua; Yang, Mingshi; Wei, Minjie. Product Details of 7524-52-9. The article was titled 《Evaluation of biomimetically synthesized mesoporous silica nanoparticles as drug carriers: Structure, wettability, degradation, biocompatibility and brain distribution》. The information in the text is summarized as follows:

Herein, three kinds of mesoporous silica nanoparticles (BMSs) were biomimetically synthesized by using heterocyclic amino acid derivatives as template and their the basic capacity in being drug carriers that covered structure, wettability, degradation, brain uptake, hemocompatibility and toxicity were systematically evaluated. The results indicated that BMSs were kinds of spherical nanoparticles with good biocompatibility. Their in vitro and in vivo behaviors, including degradation, biodistribution and biocompatibility were mainly governed by the wettability which was closely related to the structure and pore diameter of mesoporous silica nanoparticles. BMSs can degrade completely under simulated physiol. environments through a time period of 2-13 wk. They showed the tendency of brain distribution, and the distribution amount peaked at 4 h post administration. Particularly, Trp-BMS (BMS templated by C16-L-tryptophan) with the largest amount of -OH groups on the surface exhibited highest wettability, fastest degradation rate and the lowest brain distribution ability. Besides, His-BMS (BMS templated by C16-L-histidine) and Pro-BMS (BMS templated by C16-L-poline) were silica materials with good biocompatibility. Both in vitro and in vivo studies uncovered no significantly toxicity for BMSs and they were proved to be safe when they circulated into the blood. However, Trp-BMS might induce severe hemolysis and cell cycle arrest due to the high wettability. It is believed that appropriate wettability is required for the in vivo application of nanomaterials and the in vivo evaluation of mesoporous silica nanoparticles will provide useful information for understanding the underlining toxicity of biomaterials and bring new insights on designing efficient drug delivery systems.H-Trp-OMe.HCl(cas: 7524-52-9Product Details of 7524-52-9) was used in this study.

H-Trp-OMe.HCl(cas:7524-52-9) is one of amino acid derivatives. Amino acid derivatives represent an important category of skin penetration promoters. These compounds possess hydrophobic chains attached to an amino acid headgroup via a biodegradable ester bond. Due to the amphiphilic nature of these derivatives, it is possible for them to enter into the SC lipid barrier and significantly disorganize skin membrane lipids.Product Details of 7524-52-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Suppressing lithium dendrite growth by a synergetic effect of uniform nucleation and inhibition》 was written by Wu, Li-Na; Peng, Jun; Han, Fa-Ming; Sun, Ya-Ke; Sheng, Tian; Li, Yang-Yang; Zhou, Yao; Huang, Ling; Li, Jun-Tao; Sun, Shi-Gang. Related Products of 872-36-6 And the article was included in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. The article conveys some information:

The lithium dendrites issue presents a major challenge limiting the commercialization of Li metal anodes for high-energy-d. batteries. Herein, an AgPF6-LiNO3 hybrid electrolyte additive was introduced into a carbonate electrolyte, which was found to induce the formation of a homogeneous dense layer of Ag-Li alloy seeds with small sizes on the Li metal surface. The formation mechanism of such fine Ag-Li alloy seeds on the Li metal substrate was evaluated, which revealed an interesting synergistic effect between AgPF6 and LiNO3. The occurrence of such a dense layer of Ag-Li alloy seeds was found to play a significant pos. role in homogeneous nucleation and growth of Li dendrites, and LiNO3 could inhibit the growth of Li and act as a grain refiner during a repetitive plating/stripping process, thus enabling profoundly improved structural stability and excellent long-term cycle performance for the Li anode during the cycling process. With the co-presence of AgPF6-LiNO3 in the electrolyte, the relevant sym. cells could work steadily for 3000 h with slight polarization at a d. of 0.5 mA cm-2; and the Li-graphite battery can exhibit good cycle performances and deliver a specific energy d. of 374 W h kg-1 at a power d. of 747 W kg-1. The experimental process involved the reaction of Vinylene carbonate(cas: 872-36-6Related Products of 872-36-6)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Related Products of 872-36-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2007,Portilla, Jaime; Mata, Ernesto G.; Nogueras, Manuel; Cobo, Justo; Low, John N.; Glidewell, Christopher published 《Hydrogen-bonded chains of rings in methyl 4-[(5-methyl-1H-pyrazol-3-yl)amino]-3-nitrobenzoate and hydrogen-bonded sheets in methyl 1-(5-methyl-1H-pyrazol-3-yl)-1H-benzimidazole-5-carboxylate》.Acta Crystallographica, Section C: Crystal Structure Communications published the findings.COA of Formula: C8H6FNO4 The information in the text is summarized as follows:

Mols. of Me 4-[(5-Me-1H-pyrazol-3-yl)amino]-3-nitrobenzoate, C12H12N4O4, (I), exhibit a polarized (charge-separated) structure in the nitroaniline portion. The mols. are linked into chains of edge-fused R22(16) and R22(22) rings by a combination of N-H···O(carbonyl) and C-H···O(nitro) H bonds. Me 1-(5-Me-1H-pyrazol-3-yl)-1H-benzimidazole-5-carboxylate, C13H12N4O2, (II), which is readily formed from (I) by reduction followed by ring formation, crystallizes with Z’ = 2 in the space group P1̅. Each of the 2 independent mol. types is linked into sheets of R44(28) rings by a combination of N-H···N and C-H···O(carbonyl) H bonds. After reading the article, we found that the author used Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9COA of Formula: C8H6FNO4)

Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9) belongs to methyl benzoate. Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid to give methyl 3-nitrobenzoate.COA of Formula: C8H6FNO4Methyl 4-fluoro-3-nitrobenzoate is used to prepare dimethyl 3-nitro-3′,4-oxydibenzoate by reacting with 3-hydroxy-benzoic acid methyl ester.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2007,Portilla, Jaime; Mata, Ernesto G.; Cobo, Justo; Low, John N.; Glidewell, Christopher published 《Two isomeric reaction products: hydrogen-bonded sheets in methyl 4-(5-amino-3-phenyl-1H-pyrazol-1-yl)-3-nitrobenzoate and hydrogen-bonded chains of edge-fused rings in methyl 3-nitro-4-[(5-phenyl-1H-pyrazol-3-yl)amino]benzoate》.Acta Crystallographica, Section C: Crystal Structure Communications published the findings.Recommanded Product: 329-59-9 The information in the text is summarized as follows:

In Me 4-(5-amino-3-phenyl-1H-pyrazol-1-yl)-3-nitrobenzoate, C17H14N4O4, the mols. are linked into complex sheets by a combination of N-H···N, N-H···O, and C-H···O hydrogen bonds. In the isomeric Me 3-nitro-4-[(5-phenyl-1H-pyrazol-3-yl)amino]benzoate, mols. exhibit a polarized mol.-electronic structure and are linked into chains of edge-fused rings by a combination of N-H···O and C-H···O hydrogen bonds. The results came from multiple reactions, including the reaction of Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Recommanded Product: 329-59-9)

Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9) belongs to methyl benzoate. Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid to give methyl 3-nitrobenzoate.Recommanded Product: 329-59-9Methyl 4-fluoro-3-nitrobenzoate is used to prepare dimethyl 3-nitro-3′,4-oxydibenzoate by reacting with 3-hydroxy-benzoic acid methyl ester.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Almeida, Santos Claudia Lais Araujo; Macedo, Santos Jonh Anderson; Alves, Caiana Rodrigo Ribeiro; Maria, Souza Silvia; Rufino, Freitas Jucleiton Jose; Gadelha, Militao Gardenia Carmem; Rufino, Freitas Juliano Carlo published an article in 2021. The article was titled 《Synthesis, antineoplastic activity and in silico studies of (S)-N-(1-hydroxy-3-methylbutan-2-yl)-3-(p-tolyl)-1,2,4-oxadiazole-5-carboxamide》, and you may find the article in Research Journal of Chemistry and Environment.Electric Literature of C4H5ClO3 The information in the text is summarized as follows:

In this work, authors reports the synthesis, antineoplastic evaluation and in silico study of a new 1,2,4-oxadiazole. The (S)-N-(1-hydroxy-3-methylbutan-2-yl)-3-(p-toluyl)-1,2,4-oxadiazole-5-carboxamide was obtained after two reaction steps in excellent yield. Although it has shown low activity in relation to the MCF-7, HCT116 and HL60 tumor cell lines, the mol. docking study indicates that this compound acts in the colchicine site and can inhibit tubulin polymerization From the calculation of pharmacokinetic properties by the SwissADME and Osiris Property Explorer programs, it is possible to infer that the compound meets the Lipinski rules presenting good oral bioavailability and low toxicity. The experimental part of the paper was very detailed, including the reaction process of Ethyl oxalyl monochloride(cas: 4755-77-5Electric Literature of C4H5ClO3)

Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Electric Literature of C4H5ClO3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2013,Cortes, Edwar; Abonia, Rodrigo; Cobo, Justo; Glidewell, Christopher published 《Hydrogen-bonded sheet structures in methyl 4-(4-chloroanilino)-3-nitrobenzoate and methyl 1-benzyl-2-(4-chlorophenyl)-1H-benzimidazole-5-carboxylate》.Acta Crystallographica, Section C: Crystal Structure Communications published the findings.COA of Formula: C8H6FNO4 The information in the text is summarized as follows:

In Me 4-(4-chloroanilino)-3-nitrobenzoate, C14H11ClN2O4, (I), there is an intramol. N-H···O hydrogen bond and the intramol. distances provide evidence for electronic polarization of the o-quinonoid type. The mols. are linked into sheets built from N-H···O, C-H···O and C-H···π(arene) hydrogen bonds, together with an aromatic π-π stacking interaction. The mols. of Me 1-benzyl-2-(4-chlorophenyl)-1H-benzimidazole-5-carboxylate, C22H17ClN2O2, (II), are also linked into sheets, this time by a combination of C-H···π(arene) hydrogen bonds and aromatic π-π stacking interactions. In the experimental materials used by the author, we found Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9COA of Formula: C8H6FNO4)

Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9) belongs to methyl benzoate. Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid to give methyl 3-nitrobenzoate.COA of Formula: C8H6FNO4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 1964,Ricerca Scientifica, Parte 2: Rendiconti, Sezione A: Abiologica included an article by Chierici, Luigi; Scapini, Giancarlo. Safety of Dimethyl 1H-pyrrole-2,3-dicarboxylate. The article was titled 《Chromatographic study of pyrrole acids. Gas chromatography of the C-pyrrolecarboxylic acids》. The information in the text is summarized as follows:

Mixtures of C-pyrrolecarboxylic acids are separated as Me esters on a 100-cm. column packed with 3% ethylene-glycol-succinate on Chromosorb W. The instrument is operated with a 300° injection port temperature, a flame ionization detector, a 15 ml./min. N flow, and the column is temperature-programmed from 150 to 210° at 25°/min. The temperature program starts after separation of the 2-pyrrolecarboxylic acid.Dimethyl 1H-pyrrole-2,3-dicarboxylate(cas: 2818-08-8Safety of Dimethyl 1H-pyrrole-2,3-dicarboxylate) was used in this study.

Dimethyl 1H-pyrrole-2,3-dicarboxylate(cas: 2818-08-8) belongs to pyrroles. Pyrroles are components of more complex macrocycles, including the porphyrinogens and products derived therefrom, including porphyrins of heme, the chlorins, bacteriochlorins, and chlorophylls. Porphobilinogen, a trisubstituted pyrrole, is the biosynthetic precursor to many natural products such as heme.Safety of Dimethyl 1H-pyrrole-2,3-dicarboxylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Lan; Zhang, Yuhuan; Han, Ying; Zhang, Qi; Wen, Zhenfu; Li, Hongjuan; Sun, Shiguo; Chen, Xin; Xu, Yongqian published an article in 2021. The article was titled 《Nanoscale photosensitizer with tumor-selective turn-on fluorescence and activatable photodynamic therapy treatment for COX-2 overexpressed cancer cells》, and you may find the article in Journal of Materials Chemistry B: Materials for Biology and Medicine.SDS of cas: 51857-17-1 The information in the text is summarized as follows:

Effective targeting and in situ imaging-guided treatment are particularly important for accurate clin. photodynamic therapy (PDT) of malignant tumors. Herein, we propose a single mol., named IMC-DAH-SQ, which possesses dual-targeting components, including structure-inherent targeting (SIT) and cyclooxygenase-2 (COX-2) targeting units, and controllable turn-on near IR (NIR) fluorescence. Due to its amphiphilicity, IMC-DAH-SQ assembles into a nanoprobe with low background fluorescence. After incubation with tumor cells, the SIT and COX-2 recognition characteristics of IMC-DAH-SQ endow it with preferential tumor-targeting activity. The strong binding with overexpressed COX-2 can collapse the nanoprobe to monomers after accumulation in tumor cells, leading to turn-on NIR fluorescence that is completely different from normal cells. Addnl., benefiting from the single mol. model tactic, the nanoprobe has the advantages of simple synthesis without ever considering the loading rate and separation between the photosensitizer and targeting unit. Other favorite features, including superior biocompatibility, weak dark toxicity, and mitochondria enrichment capability, are implemented. All these traits not only afford nanoprobe precision tumor cell targeting capability but also provide promising imaging-guided antitumor therapy. We believe that the single mol. protocol will establish a novel strategy for simultaneous diagnosis and anticancer medicine treatment utilizing versatile but small compounds In the experimental materials used by the author, we found N-Boc-1,6-Diaminohexane(cas: 51857-17-1SDS of cas: 51857-17-1)

N-Boc-1,6-Diaminohexane(cas: 51857-17-1) is a compound useful in organic synthesis used in the preparation of mixed self-assembled monolayers (SAMs) that resist adsorption of proteins using the reaction of amines with a SAM that presents interchain carboxylic anhydride groupsSDS of cas: 51857-17-1

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics