Month: November 2022

《Overexpression of Citrus reticulata SAMT in Nicotiana tabacum increases MeSA volatilization and decreases Xylella fastidiosa symptomsã€?was published in Planta in 2020. These research results belong to Gomez, Laura M.; Teixeira-Silva, Natalia S.; Caserta, Raquel; Takita, Marco A.; Marques, Marcia O. M.; de Souza, Alessandra A.. Computed Properties of C8H8O3 The article mentions the following:

Main conclusion: Nicotiana tabacum overexpressing CrSAMT from Citrus reticulata increased production of MeSA, which works as an airborne signal in neighboring wild-type plants, inducing PR1 and increasing resistance to the pathogen Xylella fastidiosa. Xylella fastidiosa is one of the major threats to plant health worldwide, affecting yield in many crops. Despite many efforts, the development of highly productive resistant varieties has been challenging. In studying host plant resistance, the S-adenosyl-L-methionine: salicylic acid carboxyl methyltransferase gene (SAMT) from Citrus reticulata, a X. fastidiosa resistant species, was upregulated in response to pathogen infection. SAMT is involved with the catalysis and production of Me salicylate (MeSA), an airborne signal responsible for triggering systemic acquired resistance. Here we used tobacco as a model system and generated transgenic plants overexpressing C. reticulata SAMT (CrSAMT). We performed an in silico structural characterization of CrSAMT and investigated its biotechnol. potential in modulating the immune system in transgenic plants. The increase of MeSA production in transgenic lines was confirmed by gas chromatog. (GC-MS). The transgenic lines showed upregulation of PR1, and their incubation with neighboring wild-type plants activated PR1 expression, indicating that MeSA worked as an airborne signal. In addition, transgenic plants showed significantly fewer symptoms when challenged with X. fastidiosa. Altogether, these data suggest that CrSAMT plays a role in host defense response and can be used in biotechnol. approaches to confer resistance against X. fastidiosa.Methyl Salicylate(cas: 119-36-8Computed Properties of C8H8O3) was used in this study.

Methyl Salicylate(cas: 119-36-8) has been used: as a component of clarifying solution for treating Mongolian gerbil cochlea intact for immunofluorescence analysis, as a plant elicitor to test its effect on reducing the whitefly population from tomato plants.Computed Properties of C8H8O3

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

《Sweeping potential regulated structural and chemical evolution of solid-electrolyte interphase on Cu and Li as revealed by cryo-TEMã€?was published in Nano Energy in 2020. These research results belong to Xu, Yaobin; Wu, Haiping; Jia, Hao; Engelhard, Mark H.; Zhang, Ji-Guang; Xu, Wu; Wang, Chongmin. Product Details of 872-36-6 The article mentions the following:

A fundamental understanding of solid-electrolyte interphase (SEI) is paramount importance for controlling the cycling performance of rechargeable lithium metal batteries. The structural and chem. evolution of SEI with respect to electrochem. operating condition remains barely established. Here we develop a unique method for imaging the evolution of SEI formed on the Cu foil under sweeping electrochem. potential. By using cryogenic TEM imaging combined with energy dispersive X-ray spectroscopy and XPS electronic structure analyses, we reveal that, for the vinylene carbonate (VC)-free electrolyte, the SEI formed at 1.0 V is a monolithic amorphous structure, which evolves to amorphous matrix embedded with Li2O particles as the voltage decreases to 0 V. In the case of VC-containing electrolyte, the SEI is featured by an amorphous matrix with Li2O particles from 1.0 V to 0 V. The thickness of SEI formed on Cu foil increases with decreasing voltage. Associated with the localized charge modulation by the surface topog. feature and defects in the Cu foil, the SEI layer shows direct spatial correlation with these structural defects in the Cu. In addition, upon Li deposition, the SEI formed on the Li metal has similar thickness with, but different composition from the SEI formed on the Cu foil at 0 V. Those results provide insight toward SEI engineering for enhanced cycling stability of Li metal. The experimental part of the paper was very detailed, including the reaction process of Vinylene carbonate(cas: 872-36-6Product Details 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.Product Details of 872-36-6

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

《A new class of chiral pincer-type PNN ligands for Pd-catalyzed asymmetric allylic alkylationã€?was published in Youji Huaxue in 2020. These research results belong to Wu, Dunqi; Cheng, Xuan; Liu, Yankai; Cheng, Guo; Guan, Xiaoyu; Deng, Qinghai. Synthetic Route of C8H14O4 The article mentions the following:

A new class of chiral tridentate P,N,N-donor pincer ligands bearing two or three stereocenters, 1-(4,5-dihydrooxazol-2-yl)-N-(2-(diphenylphosphanyl)benzyl) methanamines (oxpma) I (R1 = i-Pr, t-Bu; R2 = Me, i-Pr, Ph, Bn; R3 = H, Me; R4 = H, i-Pr, Ph), were synthesized starting from readily available amino acids R1CH(NH2)COOH in five or six steps. They were applied in palladium-catalyzed asym. allylic alkylation of allylic acetates ArCH(OAc)CH=CHAr (Ar = Ph, 3-chlorophenyl, 2-naphthyl, etc.) to afford the desired products (R/S,E)-ArCH(R5)CH=CHAr (R5 = CH2COOMe, CH2CC(O)Me, CH2CN, etc.) with high enantioselectivities (up to 96% ee). The results came from multiple reactions, including the reaction of Diethyl 2-methylmalonate(cas: 609-08-5Synthetic Route of C8H14O4)

Diethyl 2-methylmalonate(cas: 609-08-5) belongs to aliphatic hydrocarbons. Aliphatic hydrocarbons belong to the most abundant fraction in crude oil. Aliphatics molecules are linear or branched open-chain structures such as n-alkanes, isoalkanes, cycloalkanes (naphthenes), terpenes and steranes.Synthetic Route of C8H14O4

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

《Efficient synthesis of 1-iodoalkynes via Al2O3 mediated reaction of terminal alkynes and N-iodosuccinimideã€?was written by Yao, Ming; Zhang, Jingjing; Yang, Sen; Xiong, Hangxing; Li, Li; Liu, E.; Shi, Hong. HPLC of Formula: 623-47-2 And the article was included in RSC Advances in 2020. The article conveys some information:

Iodination of terminal alkynes using N-iodosuccinimide (NIS) in the presence of γ-Al2O3 was developed to afford 1-iodoalkynes RC≡CI [R = CH2CH2OH, Ph, 2-pyridyl, etc.] with good to excellent yields (up to 99%). This described approach featured excellent chemoselectivity, good functional group tolerance and utilization of an inexpensive catalyst. The experimental process involved the reaction of Ethyl propiolate(cas: 623-47-2HPLC of Formula: 623-47-2)

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.HPLC of Formula: 623-47-2

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

《Design, synthesis and acaricidal activity of phenyl methoxyacrylates containing 2-alkenylthiopyrimidineã€?was written by Hao, Shulin; Cai, Zengfei; Cao, Yangyang; Du, Xiaohua. Related Products of 4949-44-4 And the article was included in Molecules in 2020. The article conveys some information:

A series of novel Ph methoxyacrylate derivatives I [R1 = CF3, Me, Et, etc.; R2 = allyl, 3-chloroallyl, 3-methylbut-2-enyl, etc.; A = N, CH] containing a 2-alkenylthiopyrimidine substructure were designed, synthesized and evaluated in terms of acaricidal activity. (E)-Me 2-(2-((2-(3,3-dichloroallylthio)-6-(trifluoromethyl)pyrimidin-4-yloxy) methyl)phenyl)-3-methoxyacrylate I [R1 = CF3; R2 = 3,3-dichloroallyl; A = CH] exhibited significant acaricidal activity against Tetranychus cinnabarinus (T. cinnabarinus) in greenhouse tests possessing nearly twice the larvicidal and ovicidal activity compared to fluacrypyrim. Furthermore, the results of the field trials demonstrated that I [R1 = CF3; R2 = 3,3-dichloroallyl; A = CH] (II) could effectively control Panonychuscitri with long-lasting persistence and rapid action. The toxicol. data in terms of LD50 value confirmed that II had a relatively low acute toxicity to mammals, birds and honeybees. In the part of experimental materials, we found many familiar compounds, such as Ethyl 3-oxopentanoate(cas: 4949-44-4Related Products of 4949-44-4)

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.Related Products of 4949-44-4

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

He, Jian; Wang, Huaping; Zhou, Qing; Qi, Shihan; Wu, Mingguang; Li, Fang; Hu, Wei; Ma, Jianmin published their research in Small Methods in 2021. The article was titled 《Unveiling the Role of Li+ Solvation Structures with Commercial Carbonates in the Formation of Solid Electrolyte Interphase for Lithium Metal Batteriesã€?Related Products of 872-36-6 The article contains the following contents:

Solid electrolyte interphase (SEI), determined by the components of electrolytes, can endow batteries with the ability to repress the growth of Li dendrites. Nevertheless, the mechanism of com. carbonates on in situ-generated SEI and the consequential effect on cycling performance is not well understood yet, although some carbonates are well used in electrolytes. In this work, quantum chem. calculations and mol. dynamics are used to reveal the formation mechanisms of SEI with carbonate-based electrolyte additives on the at. level. It is confirmed that the Li-coordinated carbonate species are the leading participant of SEI formation and their impact on battery performance is clarified. Fluoroethylene carbonate (FEC) exhibits a completely different behavior from vinyl ethylene carbonate (VEC), ethylene carbonate (EC), and vinylene carbonate (VC). High reduction potential Li+-coordinated additives, e.g. FEC and VEC can dominate the formation of SEI by excluding propylene carbonate (PC) and LiPF6 from the decomposition, and the corresponding Li||Li sym. cells show enhanced long-term performance compared with those with pure PC electrolyte, while the low reduction priority additives (e.g., EC and VC) cannot form a uniform SEI by winning the competitive reaction. In addition to this study using Vinylene carbonate, there are many other studies that have used Vinylene carbonate(cas: 872-36-6Related Products of 872-36-6) was used in this study.

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

Luo, Xiai; Zhao, Yu; Tao, Susu; Yang, Zhong-Tao; Luo, Hui; Yang, Weiguang published their research in RSC Advances in 2021. The article was titled 《A simple and efficient copper-catalyzed three-component reaction to synthesize (Z)-1,2-dihydro-2-iminoquinolinesã€?Electric Literature of C5H6O2 The article contains the following contents:

A operationally simple synthesis of (Z)-1,2-dihydro-2-iminoquinolines I (R = H, F, Cl, OMe; R1 = H, Br, Me, OMe; R2 = Me, Ph, 4-bromophenyl; R3 = n-pentyl, Ph, OEt, i-Pr, OMe, Ot-Bu; R4 = Me, n-Bu, 4-chlorophenyl, etc.) that proceeds under mild conditions is achieved by copper-catalyzed reaction of 1-(2-aminophenyl)ethan-1-ones II, sulfonyl azides R4SO2N3 and terminal ynones R3C(O)CC. In particular, the reaction goes through a base-free CuAAC/ring-opening process to obtain the Z-configured products due to hydrogen bonding. In the experiment, the researchers used many compounds, for example, Ethyl propiolate(cas: 623-47-2Electric Literature of C5H6O2)

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.Electric Literature of C5H6O2

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

Yang, Lijun; Wang, Dawei; Ma, Dejun; Zhang, Di; Zhou, Nuo; Wang, Jing; Xu, Han; Xi, Zhen published an article in 2021. The article was titled 《In Silico Structure-Guided Optimization and Molecular Simulation Studies of 3-Phenoxy-4-(3-trifluoromethylphenyl)pyridazines as Potent Phytoene Desaturase Inhibitorsã€? and you may find the article in Molecules.Formula: C7H12O3 The information in the text is summarized as follows:

A series of novel 3-phenoxy-4-(3-trifluoromethylphenyl)pyridazines I [R1 = Me, Et, CH(CH3)2, cyclopropyl; R2 = 3-F, 3-F-4-Br, 3,4,5-tri-F, etc.] were designed. The results showed that some of these new compounds showed a good herbicidal activity at the rate of 750 g ai/ha by both pre- and post-emergence applications, especially compound I [R1 = Me; R2 = 4-CF3], which displayed a comparable pre-emergence herbicidal activity to diflufenican at 300-750 g ai/ha, and a higher post-emergence herbicidal activity than diflufenican at the rates of 300-750 g ai/ha. Addnl., compound I [R1 = Me; R2 = 4-CF3] was safe to wheat by both pre- and post-emergence applications at 300 g ai/ha, showed the compound’s potential for weed control in wheat fields. Our mol. simulation studies revealed the important factors involved in the interaction between compound I [R1 = Me; R2 = 4-CF3] and Synechococcus PDS. This work provided a lead compound for weed control in wheat fields.Ethyl 3-oxopentanoate(cas: 4949-44-4Formula: C7H12O3) was used in this study.

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.Formula: C7H12O3

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

Computed Properties of C5H6O2In 2019 ,《Regiospecific synthesis of polysubstituted furans with mono- to tricarboxylates from various sulfonium acylmethylides and acetylenic estersã€?appeared in RSC Advances. The author of the article were Dong, Jun; Du, Hongguang; Xu, Jiaxi. The article conveys some information:

Polysubstituted furans I [R1 = CO2Me, CO2Et; R2 = H, CF3, CO2Me, CO2Et; R3 = H, CO2Me, CO2Et; R4 = Me, Ph, 1-naphthyl, etc.] were prepared in moderate to good yields from sulfur ylides and acetylenic esters. The direct reactions of dimethylsulfonium acylmethylides with acetylenic esters afforded furans I through a tandem sequence of Michael addition, intramol. nucleophilic addition, 4π ring opening, intramol. Michael addition and elimination. The method was extended to synthesize furan-3-carboxylate, -2,4-dicarboxylates, and -2,3,4-tricarboxylates as well. The current method provided a direct and simple strategy in synthesis of structurally diverse polysubstituted furans with mono- to tricarboxylate groups from safe and readily available dimethylsulfonium acylmethylides and different acetylenic esters. In the experiment, the researchers used Ethyl propiolate(cas: 623-47-2Computed Properties of C5H6O2)

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.Computed Properties of C5H6O2

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

《Copper/Silver Co-catalyzed Regioselective C5-H Functionalization of 8-Aminoquinoline Amides with 1,3-Dicarbonyl Compoundsã€?was written by Zhan, Fuxu; Zhang, Wei; Zhao, Huaiqing. HPLC of Formula: 30414-53-0 And the article was included in Synthesis on April 30 ,2020. The article conveys some information:

A copper/silver co-catalyzed cross-dehydrogenative coupling reaction is developed to achieve exclusively remote C5-H coupling of 8-aminoquinoline amides I (R = tert-Bu, Me, Ph, cyclohexyl, etc.) with the methylenic sp3 C-H bond of 1,3-dicarbonyl compds R1COCH2COR2 (R1 = Me, methoxy, ethoxy, isopropyloxy; R2 = Me, Et, cyclopropyl, iso-Pr, phenyl). This protocol provides a highly regioselective synthetic route for the preparation of 8-aminoquinoline amides II under mild conditions. Preliminary experiments reveal that radicals may be involved in this catalytic transformation. In the experiment, the researchers used Methyl 3-oxovalerate(cas: 30414-53-0HPLC of Formula: 30414-53-0)

Methyl 3-oxovalerate(cas: 30414-53-0) 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.HPLC of Formula: 30414-53-0

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