Day: October 27, 2021

I found the field of Agriculture; Chemistry; Food Science & Technology very interesting. Saw the article Synthesis of Three Bioactive Aromatic Compounds by Introducing Polyketide Synthase Genes into Engineered Escherichia coli published in 2019. Formula: C9H7NO2, Reprint Addresses Ahn, JH (corresponding author), Konkuk Univ, Bio Mol Informat Ctr, Dept Biosci & Biotechnol, Seoul 05029, South Korea.. The CAS is 86-95-3. Through research, I have a further understanding and discovery of 4-Hydroxyquinolin-2(1H)-one

Intermediates in aromatic amino acid biosynthesis can serve as substrates for the synthesis of bioactive compounds. In this study we used two intermediates in the shikimate pathway of Escherichia coli, chorismate and anthranilate, to synthesize three bioactive compounds: 4-hydroxycoumarin (4-HC), 2,4-dihydroxyquinoline (DHQ), and 4-hydroxy-1-methyl-2(1H)-quinolone (NMQ). We introduced genes for the synthesis of salicylic acid from chorismate to supply the substrate for 4-HC and the gene encoding N-methyltransferase for the synthesis of N-methylanthranilate from anthranilate. Polyketide synthases and coenzyme (Co)A ligases were tested to determine the optimal combination of genes for the synthesis of each compound. We also tested several constructs and identified the best one for increasing levels of endogenous substrates for chorismate, anthranilate, and malonyl-CoA. With the use of these strategies, 255.4 mg/L 4-HC, 753.7 mg/L DHQ, and 17.5 mg/L NMQwere synthesized. This work provides a basis for the synthesis of diverse coumarin and quinoline derivatives with potential medical applications.

Formula: C9H7NO2. About 4-Hydroxyquinolin-2(1H)-one, If you have any questions, you can contact Choo, HJ; Ahn, JH or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Gendron, T; Pereira, R; Abdi, HY; Witney, TH; Arstad, E in [Gendron, Thibault; Arstad, Erik] UCL, Ctr Radiopharmaceut Chem, 5 Gower Pl, London WC1E 6BS, England; [Gendron, Thibault; Abdi, Hafsa Y.; Arstad, Erik] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England; [Pereira, Raul; Witney, Timothy H.] UCL, Ctr Adv Biomed Imaging, 72 Huntley St, London WC1E 6DD, England; [Pereira, Raul; Witney, Timothy H.] Kings Coll London, St Thomas Hosp, Sch Biomed Engn & Imaging Sci, Dept Imaging Chem & Biol, London SE1 7EH, England published Iron(II)/Persulfate Mediated Newman-Kwart Rearrangement in 2020.0, Cited 20.0. SDS of cas: 150-19-6. The Name is m-Methoxyphenol. Through research, I have a further understanding and discovery of 150-19-6.

Herein, we report that iron(II)/ammonium persulfate in aqueous acetonitrile mediates the Newman-Kwart rearrangement of O-aryl carbamothioates. Electron-rich substrates react rapidly under moderate heating to afford the rearranged products in excellent yields. The mild conditions, rapid reaction rates, and suitability for scale up offers immediate practical benefits to access functionalized thiophenols.

SDS of cas: 150-19-6. About m-Methoxyphenol, If you have any questions, you can contact Gendron, T; Pereira, R; Abdi, HY; Witney, TH; Arstad, E or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

HPLC of Formula: C7H8O. I found the field of Polymer Science very interesting. Saw the article Improvement in zinc complexes bearing Schiff base in ring-opening polymerization of epsilon-caprolactone: A five-membered ring system published in 2019.0, Reprint Addresses Wu, KH (corresponding author), Univ Tokyo, Grad Sch Sci, Dept Chem, Tokyo 1130033, Japan.; Chen, HY (corresponding author), Kaohsiung Med Univ, Dept Med & Appl Chem, Kaohsiung 80708, Taiwan.. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol.

The ring-opening polymerizations of e-caprolactone (CL) using 5- and 6-membered ring Zn complexes bearing Schiff base as catalysts were comparatively studied. The 5-membered ring Zn complexes exhibited a considerably higher polymerization rate than the 6-membered ring Zn complexes (2-12 fold for CL polymerization) did. X-ray data revealed that 5-membered ring L-2(5-Ph) Zn creates larger empty space around the Zn center than 6-membered ring L-2(6-Bn) Zn. This allows higher interaction between the initiator and Zn complex and easy CL coordination.

HPLC of Formula: C7H8O. About Benzyl Alcohol, If you have any questions, you can contact Lai, FJ; Chiu, LL; Lee, CL; Lu, WY; Lai, YC; Ding, SW; Chen, HY; Wu, KH or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Second-Generation meta-Phenolsulfonic Acid-Formaldehyde Resin as a Catalyst for Continuous-Flow Esterification WOS:000506088700033 published article about DIRECT ESTER CONDENSATION; CARBOXYLIC-ACIDS; SULFONIC-ACID; WATER-TOLERANT; NONCATALYTIC TRANSESTERIFICATION; DEHYDRATIVE ESTERIFICATION; EQUIMOLAR AMOUNTS; ALCOHOLS; POLYMER; BIODIESEL in [Hu, Hao; Ota, Hajime; Baek, Heeyoel; Shinohara, Kenta; Uozumi, Yasuhiro; Yamada, Yoichi M. A.] RIKEN, Ctr Sustainable Resource Sci, Wako, Saitama 3510198, Japan; [Mase, Toshiaki; Uozumi, Yasuhiro] Inst Mol Sci, Okazaki, Aichi 4448787, Japan in 2020, Cited 38. The Name is (E)-2-Methylbut-2-enoic acid. Through research, I have a further understanding and discovery of 80-59-1. Computed Properties of C5H8O2

A second-generation m-phenolsulfonic acid-formaldehyde resin (PAFR II) catalyst was prepared by condensation polymerization of sodium m-phenolsulfonate and paraformaldehyde in an aqueous H2SO4 solution. This reusable, robust acid resin catalyst was improved in both catalytic activity and stability, maintaining the characteristics of the previous generation catalyst (p-phenolsulfonic acid-formaldehyde resin). PAFR II was applied in the batchwise and continuous-flow direct esterification without water removal and provided higher product yields in continuous-flow esterification than any other commercial ion-exchanged acid catalyst tested.

Computed Properties of C5H8O2. About (E)-2-Methylbut-2-enoic acid, If you have any questions, you can contact Hu, H; Ota, H; Baek, H; Shinohara, K; Mase, T; Uozumi, Y; Yamada, YMA or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recently I am researching about CYCLIC THIOAMIDES; REUSABLE CATALYST; BORONIC ACIDS; EFFICIENT; DERIVATIVES; 3,4-DIHYDROPYRIMIDIN-2(1H)-ONE; DEHYDROGENATION; PYRIMIDINES; PHENOLS; DESIGN, Saw an article supported by the National Research Foundation of Korea (NRF) – Korea government (MSIT) [2017R1A2B2003614]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Phan, TNH; Lee, J; Shin, H; Sohn, JH. The CAS is 150-76-5. Through research, I have a further understanding and discovery of Mequinol. SDS of cas: 150-76-5

A Pd-catalyzed/Cu-mediated oxidative dehydrosulfurative carbon-oxygen cross-coupling reaction of 3,4-dihydropyrimidin-1H-2-thiones (DHPMs) with aryl alcohols is described. Due to the ready availability of diverse DHPMs and aryl alcohols, the reaction method offers facile access to biologically and pharmacologically valuable 2-aryloxypyrimidine derivatives with rapid diversification.

SDS of cas: 150-76-5. About Mequinol, If you have any questions, you can contact Phan, TNH; Lee, J; Shin, H; Sohn, JH or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Formula: C8H8O2. In 2021 J CHIN CHEM SOC-TAIP published article about DOMINO REACTIONS; 4-COMPONENT SYNTHESIS; NATURAL-PRODUCTS; EFFICIENT; CATALYST; PHENAZINES; BENZOPHENAZINES; DABCO; BENZO in [Olyaei, Abolfazl; Aghajanzadeh, Atiye; Feizy, Elaheh] Payame Noor Univ PNU, Dept Chem, POB 19395-4697, Tehran, Iran; [Sadeghpour, Mahdieh] Islamic Azad Univ, Dept Chem, Takestan Branch, Takestan, Iran in 2021, Cited 35. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5.

A simple and efficient synthesis of novel 6,6 ‘-(arylmethylene)bis(benzo[a]phenazin-5-ol) derivatives has been developed via a sequential one-pot, two-step, pseudo-five-component tandem reaction starting from 2-hydroxynaphthalene-1,4-dione, o-phenylenediamine, and aromatic aldehydes in the presence of 2-aminopyridine as co-catalyst and p-TsOH as catalyst at 90 degrees C under solvent-free conditions. This sequential green process offers several advantages, such as operational simplicity, high yield, low cost, easy handling, clean reactions, absence of any tedious work-up, and purification of products by non-chromatographic methods.

Formula: C8H8O2. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Olyaei, A; Aghajanzadeh, A; Feizy, E; Sadeghpour, M or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Authors Maran, BAV; Josmeh, D; Tan, JK; Yong, YS; Shah, MD in MDPI published article about in [Venmathi Maran, Balu Alagar; Josmeh, Dawglas; Shah, Muhammad Dawood] Univ Malaysia Sabah, Borneo Marine Res Inst, Jalan UMS 88450, Kota Kinabalu, Sabah, Malaysia; [Tan, Jen Kit] Univ Kebangsaan Malaysia, Dept Biochem, Med Ctr, Kuala Lumpur 56000, Malaysia; [Yong, Yoong Soon] Xiamen Univ Malaysia, Lab Ctr, Jalan Sunsuria, Bandar Sunsuria 43900, Sepang, Malaysia in 2021.0, Cited 52.0. Quality Control of 4-Methoxybenzaldehyde. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5

Zeylanicobdella arugamensis (Hirudinea), a marine parasitic leech, not only resulted in the mortality of the host fish (Groupers) but also caused economic losses. The current study aimed to elucidate the antiparasitic efficacy of the aqueous extract of the Azadirachta indica leaves against Z. arugamensis and to profile the composition via LC-Q Exactive HF Orbitrap mass spectrometry. Different concentrations (25, 50 and 100 mg/mL) of A. indica extract were prepared and tested on the parasitic leeches. The total mortality of leeches was noticed with an exposure to the A. indica aqueous extract. The average times required for the aqueous extract at concentrations of 25, 50 and 100 mg/mL to kill the leeches were 42.65 +/- 9.20, 11.69 +/- 1.11 and 6.45 +/- 0.45 min, respectively, in a dose-dependent manner. The Orbitrap mass spectrometry analysis indicated the presence of five flavonoids (myricetin 3-O-galactoside, trifolin, isorhamnetin, quercetin and kaempferol), four aromatics (4-methoxy benzaldehyde, scopoletin, indole-3-acrylic acid and 2,4-quinolinediol), three phenolics (p-coumaric acid, ferulic acid and phloretin) and two terpenoids (pulegone and caryophyllene oxide). Thus, our study indicates that A. indica aqueous extract is a good source of metabolites with the potential to act as a biocontrol agent against the marine parasitic leech in aquaculture.

About 4-Methoxybenzaldehyde, If you have any questions, you can contact Maran, BAV; Josmeh, D; Tan, JK; Yong, YS; Shah, MD or concate me.. Quality Control of 4-Methoxybenzaldehyde

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Computed Properties of C7H8O. Recently I am researching about STRUCTURAL-CHARACTERIZATION; O-AMINOBENZAMIDES; CATALYSTS; QUINOLINES; OXIDATION; METAL; ALLOY; DERIVATIVES; FABRICATION; ABSORPTION, Saw an article supported by the New Energy and Industrial Technology Development Organization (NEDO)New Energy and Industrial Technology Development Organization (NEDO) [JPNP16010]. Published in ELSEVIER in AMSTERDAM ,Authors: Poly, SS; Hashiguchi, Y; Sultana, A; Nakamura, I; Shimizu, KI; Yasumura, S; Fujitani, T. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol

Carbon supported Pd@Pt core-shell nanoparticles catalyst was prepared in a flow reactor toachieve enhanced catalytic activities with low Pt loading for the acceptorless dehydrogenative synthesis of pyrimidines. Spectroscopic (XAS analysis) and microscopic (HAADF-STEM) techniques reveled that the core-shell structure was formed by the applied preparation method. The Pd@Pt/PVP (polyvinylpyrrolidone)/C catalyst showed the activity for the three component one pot synthesis of pyrimidines through a series of consecutive reactions including oxidation of alcohols, C?C, and C?N coupling, followed by heterocyclization and dehydrogenation employing various primary alcohols, secondary alcohols, and amidines. The reaction mechanism on Pd@Pt/ PVP/C catalyst was explored by comparison with the control experiments.

About Benzyl Alcohol, If you have any questions, you can contact Poly, SS; Hashiguchi, Y; Sultana, A; Nakamura, I; Shimizu, KI; Yasumura, S; Fujitani, T or concate me.. Computed Properties of C7H8O

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Simple practical method for synthesis of trisubstituted imidazoles: an efficient copper catalyzed multicomponent reaction WOS:000667711300005 published article about LACTIM-LACTAM TAUTOMERISM; PHOTOPHYSICAL PROPERTIES; SUBSTITUTED IMIDAZOLES; SPECTROSCOPIC APPROACH; ANTIFUNGAL AGENTS; IONIC LIQUIDS; GREEN; OXIDATION; HYDROGEN; SYSTEM in [Kadu, Vikas D.; Mali, Ganesh A.; Khadul, Siddheshwar P.; Kothe, Gokul J.] Punyashlok Ahilyadevi Holkar Solapur Univ, Sch Chem Sci, Solapur 413255, Maharashtra, India in 2021.0, Cited 59.0. The Name is 3,4-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 120-14-9. Computed Properties of C9H10O3

A rapid practical process has been developed for synthesis of 2,4,5-trisubstituted-imidazoles in excellent yields up to 95% from readily available starting materials. In this CuI catalyzed synthesis, trisubstituted imidazoles were afforded in short reaction times, wherein the substrate scope is well explored with benzoin as well as benzil reacting with different aldehydes in the presence of ammonium acetate as the nitrogen source.

Computed Properties of C9H10O3. About 3,4-Dimethoxybenzaldehyde, If you have any questions, you can contact Kadu, VD; Mali, GA; Khadul, SP; Kothe, GJ or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

SDS of cas: 120-14-9. Recently I am researching about HYDROGEN TRANSFER HYDROGENOLYSIS; N-DOPED CARBON; BIO-OIL; NONOXIDATIVE DEHYDROGENATION; ETHANOL DEHYDROGENATION; MECHANISTIC INSIGHTS; VERATRYL ALCOHOL; PD; AU; NANOPARTICLES, Saw an article supported by the National Key R&D Program of China [2017YFD0601003]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2019M662927]. Published in ELSEVIER in AMSTERDAM ,Authors: Zhang, HC; Liu, Y; Fu, SY; Deng, YL. The CAS is 120-14-9. Through research, I have a further understanding and discovery of 3,4-Dimethoxybenzaldehyde

Upgrading of lignin derived bio-oil is an essential step for producing sustainable bio-based chemicals and fuel. Taken into account that alpha hydroxyl is the abundant functional group in lignin, high effective and selective catalytic alcoholysis for cleaving the C-alpha-OH linkages would be desirable. However, an in-depth understanding of the reaction mechanisms involved in the cleavage of C-aromatic-C-alpha and C-alpha-O bonds over a novel catalyst is still needed. Herein, we report an efficient liquid-phase hydrogen transfer strategy for the selective hydrodeoxygenation of a non-phenolic lignin model compound, 3,4-dimethoxybenzyl (veratryl) alcohol, under mild conditions. By employing iso-propanol as solvent and H-donor, and palladium nanoparticles immobilized on nitrogen-doped carbon (Pd/CNX) as efficient multifunctional catalyst, veratryl alcohol dehydroxylation exhibited almost 100% conversion along with very high selectivity for 1,2-dimethoxy-benzene (46%) and 3,4-dimethoxytoluene (54%). Compared with other Pd catalysis, the Pd/CNX has excellent catalytic performances and exhibits higher selectivity for 3,4-dimethoxytoluene under incorporation with 1% HCOOH at 220 degrees C. The proportion of Pd (0) significantly increases in Pd/CNX catalyst when introduced into N precursor because of its highly dispersed Pd NPs and preventing the reoxidation of Pd (0). The dehydrogenation reaction occurred through the hydrogen generation of a secondary alcohol. Then, the C-alpha-OH and C-aromatic-C-alpha bonds of veratryl alcohol were selectively cleaved by catalytic transfer hydrogenolysis. The alcoholysis mechanism is supported by dispersion-corrected density functional theory computations. (C) 2020 Elsevier B.V. All rights reserved.

About 3,4-Dimethoxybenzaldehyde, If you have any questions, you can contact Zhang, HC; Liu, Y; Fu, SY; Deng, YL or concate me.. SDS of cas: 120-14-9

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles