Day: November 15, 2022

Shen, Jiabin published the artcileSelective Mono- and Diamination of Ketones in a Combined Copper-Organocatalyst System, Recommanded Product: 3-Acetylthiophene, the main research area is pyrazole ketone chemoselective preparation; ketone azole copper organocatalyst mono amination; dipyrazole ketone chemoselective preparation; azole ketone copper organocatalyst di amination.

Herein, a simple and mild protocol for syntheses of α-pyrazoles I [R = 4-Me, 5-I, 3-Ph, etc.; Ar = Ph, 3-MeC6H4, 4-ClC6H4, etc.] and α,α-dipyrazole ketone derivatives II [R2 = R3 = H, 4-Cl, 4-Br, etc.; Ar1 = Ph, 3-FC6H4, 4-ClC6H4, etc.] via combined copper-organocatalyzed chemoselective mono- and diamination of ketones using azoles as amine source were reported. Various substrates were compatible and provided the corresponding products I and II in moderate to good yields.

Organic Letters published new progress about Amination (chemoselective). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Recommanded Product: 3-Acetylthiophene.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Tanaka, Toshimasa published the artcileCharacterization of the CYP2C8 active site by homology modeling, Quality Control of 40180-04-9, the main research area is CYP2C8 active site homol model pharmacophore CYP2C9 CYP2C19.

To compare the features of the active sites of CYP2C8, CYP2C9, and CYP2C19, homol. modeling was performed based on the crystallog. coordinates of mammalian CYP2C5. It was found that CYP2C8 has a much larger pocket than the other forms due to the existence of an addnl. pocket. The approach to the addnl. pocket is comprised of Ile102, Ser114, Leu208, Val366, and Ile476, and the side chains of Ser114, Val366, and Ile476, which are smaller than the corresponding residues in the other CYPs, enable access to the pocket. The general features of the active site in the CYP2C8 model are similar to those of the previously constructed CYP3A4 model, which may account for the 2 CYPs sharing some of their substrates. The CYP2C8 model was validated by examining the bound orientation of paclitaxel and showing that it is consistent with the formation of the 6-beta hydroxylated derivative during metabolism Docked paclitaxel was found to form a hydrogen bond with the side chain of Asn99, which is a characteristic residue of CYP2C8 and is located in the addnl. pocket. Descriptors for CYP2C8 and CYP2C9 substrates were also examined with the mol. operating environment (MOE). The descriptor by which CYP2C8 and CYP2C9 substrates were classified most distinctly was found to be molar refractivity, which might be related to the longer shape and more polar nature of the active site of CYP2C8 in the CYP2C subfamily.

Chemical & Pharmaceutical Bulletin published new progress about Conformation (homol. model). 40180-04-9 belongs to class benzothiophene, name is 2-(2,3-Dichloro-4-(thiophene-2-carbonyl)phenoxy)acetic acid, and the molecular formula is C13H8Cl2O4S, Quality Control of 40180-04-9.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Gao, Ya published the artcileDefluorinative Alkylation of Trifluoromethyl Alkenes with Soft Carbon Nucleophiles Enabled by a Catalytic Amount of Base, COA of Formula: C6H6OS, the main research area is gem difluoroalkene fluoro pyran preparation; trifluoromethyl alkene soft carbon nucleophile defluorinative alkylation.

Direct manipulation of readily accessible trifluoromethyl alkenes (TAs) represents an attractive approach to the preparation of diversified fluorine-containing compounds In this study, defluorinative alkylation reactions of TAs with a broad array of soft carbon nucleophiles have been documented. Nucleophilic substitutions occur enabled by a catalytic amount of base, providing access to tertiary alkyl substituted gem-difluoroalkenes and 2-fluoro-4H-pyrans. By extending the nucleophiles to silyl enol ethers, defluorination can be achieved in the absence of base to give gem-difluoroalkenes. This process, which eliminates the requirement of organometallic reagents, transition metals, or strong bases for the C-F bond cleavage, is applicable to late-stage modification of complex mols.

Advanced Synthesis & Catalysis published new progress about Alkylation (defluorinative). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, COA of Formula: C6H6OS.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Fagbemi, Kehinde Oluwakemi published the artcileBioactive compounds, antibacterial and antioxidant activities of methanol extract of Tamarindus indica Linn., Application In Synthesis of 1468-83-3, the main research area is Tamarindus indica methanol extract bioactive compound antibacterial antioxidant activity.

Tamarindus indica is one of the tropical medicinal plants that has been attributed curative potential of numerous diseases by many rural dwellers. This study was designed to evaluate the antioxidant, antibacterial activities and also to determine the various chem. constituents responsible for its pharmacol. activities. The methanol extract of Tamarindus indica fruit pulp was analyzed by Gas Chromatog./Mass Spectrometer to determine the volatile compounds present. The antioxidant activities were performed using DPPH and FRAP method and the antibacterial activity was tested against some common pathogens by macro broth dilution method. The GCMS anal. shows the presence of 37 compounds, out of which 14 had their peak area percentages ≥ 1% and only two compounds had no reported pharmacol. activities. Most of the bioactive compounds including 5-Hydroxymethylfurfural (31.06%)-3-O-Methyl-d-glucose (16.31%), 1,6-anhydro-β-D-Glucopyranose (9.95%), 5-methyl-Furancarboxaldehyde (3.2%), Triethylenediamine (1.17%), 1-(2-furanyl)-1-Propcanone (2.18%), Me 2-furoate (3.14%), Levoglucosenone (3.21%), Me ester-Hepta-2,4-dienoic acid, (8.85%), 2,3-dihydro-3,5-dihydrox-4H-Pyran-4-one (3.4%), O-α-D-glucopyranosyl-(1.fwdarw.3)-β-D-fructofuranosyl-α-D-Glucopyranoside (2.18%), n-Hexadecanoic acid (1.38%), 2-Heptanol, acetate (1.29%), 5-[(5-methyl-2-fur-2-Furancarboxaldehyde)] (1.08%), 3-Methyl-2-furoic acid (1.05%) and cis-Vaccenic acid (2.85%)have been reported with different activities such as antibacterial, antifungal, antitubercular, anticancer, antioxidant and other prophylactic activities. The extract demonstrated inhibitory potential against all tested pathogen. However, Plesiomonas shigellosis ATCC 15903 and Bacillus pumillus ATCC 14884 are more sensitive with the MIC of 0.22 and 0.44 mg/mL resp. The antioxidant activity was relatively low due to the low phenolic content of the extract This shows that there is a strong correlation between antioxidant activities and phenolic content. GC-MS anal. revealed the presence of bioactive phytoconstituents with various biol. activities and this justifies the rationale behind its usage as a curative therapy by many local dwellers.

Scientific Reports published new progress about Acinetobacter calcoaceticus. 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Application In Synthesis of 1468-83-3.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Xing, Yidan published the artcileSynthesis of Tertiary Benzylic Nitriles via Nickel-Catalyzed Markovnikov Hydrocyanation of α-Substituted Styrenes, Safety of 3-Acetylthiophene, the main research area is benzylic nitrile preparation Markovnikov hydrocyanation styrene nickel catalyst.

The Markovnikov hydrocyanation of α-substituted styrenes enables the synthesis of tertiary benzylic nitriles under nickel catalysis. The Lewis-acid-free transformation features an unprecedented functional groups tolerance, including the -OH and -NH2 groups. A broad range of tertiary benzylic nitriles were obtained in good to excellent yields. In addition, an asym. version of this reaction was preliminarily investigated.

Organic Letters published new progress about Hydrocyanation (Markovnikov). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Safety of 3-Acetylthiophene.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Huang, Yubing published the artcileTransition-metal-free N-difluoromethylation of hydrazones with TMSCF2Br as the difluoromethylation reagent, SDS of cas: 1468-83-3, the main research area is tosyl hydrazone bromodifluoromethyl trimethylsilane difluoromethylation.

A novel and practical protocol to synthesize a series of N-difluoromethyl hydrazones via base-promoted N-difluoromethylation was reported. With hydrazones as chain substrates containing N-N bonds and TMSCF2Br as the difluoromethylation reagent, the reaction delivers N-difluoromethyl hydrazones in good yields, which exhibit good functional group tolerance and stereoselectivity.

Organic Chemistry Frontiers published new progress about Diastereoselective synthesis. 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, SDS of cas: 1468-83-3.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Xu, Jun published the artcileA combination of heterogeneous catalysis and photocatalysis for the olefination of quinoxalin-2(1H)-ones with ketones in water: a green and efficient route to (Z)-enaminones, Safety of 3-Acetylthiophene, the main research area is enaminone quinoxalinone acylmethylene preparation diastereoselective green chem; quinoxalinone diastereoselective photochem olefination ketone.

Herein, a novel aqueous reaction for the olefination of quinoxalin-2(1H)-ones I (R1 = H, 5-Me, 6-OMe, 6,7-Cl2, etc.; R2 = H, Me, cyclohexylmethyl, allyl, Ph, 2,6-F2C6H3CH2, etc.) with ketones R3C(O)CH2R4 [R3 = Me, cyclopropyl, Ph, 3-thienyl, etc., R4 = H; R3R4 = (CH2)3, CH(cyclopentyl)CH2CH2] through a combinational strategy is described. This reaction features very mild conditions using a simple and cheap catalyst for the synthesis of (Z)-enaminones II in moderate-to-good yields. Such a methodol. successfully combines the heterogeneous Mannich reaction with photocatalysis, and provides a green and practical approach for the synthesis of potentially bioactive (Z)-enaminones with a 3,4-dihydroquinoxalin-2(1H)-one skeleton.

Green Chemistry published new progress about Diastereoselective synthesis. 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Safety of 3-Acetylthiophene.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Peng, Yongzhen published the artcileEnantiocomplementary C-H Bond Hydroxylation Combining Photo-Catalysis and Whole-Cell Biocatalysis in a One-Pot Cascade Process, Computed Properties of 1468-83-3, the main research area is whole cell biocatalysis photocatalysis enantiocomplementary hydroxylation cascade.

Enantiocomplementary hydroxylation of alkyl aromatics through a one-pot photo-biocatalytic cascade reaction is described. The photoredox process is implemented in aqueous phase with O2 as oxidant and the subsequent (R)- or (S)-selective bioreduction is performed by whole cell system without the addition of the expensive cofactor (NADPH). This mild, operationally simple protocol transforms a wide variety of readily available aromatic compounds into valuable chiral alcs. with high yield (up to 90%) and stereoselectivity (up to 99%), thereby displaying important potentials in organic synthesis.

European Journal of Organic Chemistry published new progress about Biochemical reaction kinetics. 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Computed Properties of 1468-83-3.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Fan, Jiajie published the artcileDouble Enzyme-Catalyzed One-Pot Synthesis of Enantiocomplementary Vicinal Fluoro Alcohols, Computed Properties of 1468-83-3, the main research area is enzymic enantiocomplementary vicinal fluoro alc synthesis.

A double-enzyme-catalyzed strategy for the synthesis of enantiocomplementary vicinal fluoro alcs. through a one-pot, three-step process including lipase-catalyzed hydrolysis, spontaneous decarboxylative fluorination, and subsequent ketoreductase-catalyzed reduction was developed. With this approach, β-ketonic esters were converted to the corresponding vicinal fluoro alcs. with high isolated yields (up to 92%) and stereoselectivities (up to 99%). This new cascade process addresses some issues in comparison with traditional methods such as environmentally hazardous reaction conditions and low stereoselectivity outcome.

Organic Letters published new progress about Biochemical reaction kinetics. 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Computed Properties of 1468-83-3.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Ma, Jinliang published the artcileMetal-Free-Catalyzed Three-Component [2+2+2] Annulation Reaction of [60]Fullerene, Ketones and Indoles: Access to Diverse [60]Fullerene-Fused 1,2-Tetrahydrocarbazoles, Category: benzothiophene, the main research area is ketone indole fullerene iodine catalyst three component cycloaddition; fullerene tetrahydrocarbazole preparation.

The first example of metal-free-catalyzed multicomponent annulation reaction of [60]fullerene was developed for concise and efficient construction of novel [60]fullerene-fused 1,2-tetrahydrocarbazoles. Using inexpensive and readily available I2 as a catalyst, [60]fullerene, ketones, and indoles underwent a formal [2+2+2] annulation process to conveniently assemble diverse 1,2-tetrahydrocarbazoles. Mechanistic studies indicated that this reaction proceeded through I2-promoted generation of a 3-vinylindole structure with the characteristics of a conjugated diene followed by cycloaddition to [60]fullerene.

Organic Letters published new progress about [2+2+2] Cycloaddition reaction. 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Category: benzothiophene.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem