Tag: M.W=100-150

Wang, Wenchao published the artcileMedium-Bandgap (Acceptor’-Donor)2Acceptor-Type Small-Molecule Donors Based on an Asymmetric Thieno[3,2-c]isochromene Building Block for Organic Solar Cells with High Efficiency and Voltage, Category: benzothiophene, the main research area is medium bandgap donor acceptor complex solar cell; organic solar cell heterojunction donor acceptor complex.

Small-mol. donors have a critical effect on the properties of the small-mol.-based organic solar cells (SM-OSCs). In order to develop novel small-mol. donors, two (A’-D)2A-type (A = acceptor; D = donor) small mols. (IDO-TiC-T)2-DFBT and (Rh-TiC-T)2-DFBT are designed and synthesized, in which 5,6-difluoro-2,1,3-benzothiadiazole (DFBT) and novel asymmetry electron-rich thieno[3,2-c] isochromene (TiC) are introduced as the central electron-accepting (A) and the armed electron-donating (D) units, resp. Also, their photoelectronic properties are studied. A significant effect of the TiC and electron-accepting (A’) end units on these properties is observed A deep HOMO energy level of -5.45 eV with a medium bandgap of 1.77 eV is exhibited. A significantly improved power conversion efficiency (PCE) of 7.55% is received in the (IDO-TiC-T)2-DFBT/PC71BM-based OSCs with a high open circuit voltage (VOC) of 0.9 V, which is 1.38 times higher than that in the (Rh-TiC-T)2-DFBT/PC71BM-based cells. Our results illuminate that the asym. TiC unit has a great potential to build up small-mol. donors for OSCs with high PCE and VOC.

ACS Applied Energy Materials published new progress about Band gap (of small-mol. donors, for solar cells). 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

Xu, Kai published the artcileDesymmetrization of meso-Dicarbonatecyclohexene with β-Hydrazino Carboxylic Esters via a Pd-Catalyzed Allylic Substitution Cascade, Category: benzothiophene, the main research area is desymmetrization cyclohexene carbonate hydrazino carboxylic ester allylic substitution cascade.

The desymmetrization of meso-dicarbonatecyclohexene with β-hydrazino carboxylic esters has been achieved via a RuPHOX/Pd-catalyzed allylic substitution cascade for the construction of chiral hexahydrocinnoline derivatives with high performance. Mechanistic studies reveal that the reaction exploits a pathway different from that of our previous work and that the first nitrogen nucleophilic process is the rate-determining step. The protocol could be conducted on a gram scale without any loss of catalytic behavior, and the corresponding chiral hexahydrocinnolines can undergo diverse transformations.

Organic Letters published new progress about Allylic substitution reaction (stereoselective). 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

Xu, Yi published the artcileVinylethylene Carbonates as α,β-Unsaturated Aldehyde Surrogates for Regioselective [3 + 3] Cycloaddition, Recommanded Product: 3-Acetylthiophene, the main research area is vinylethylene carbonate alpha beta unsaturated aldehyde regioselective cycloaddition; polysubstituted terphenyl preparation.

Herein, the authors report a novel stepwise addition-controlled ring size method, to access tetrahydropyrimidines through an operationally simple [3 + 3] cycloaddition of vinylethylene carbonates with triazinanes. The authors could also use this method for a [3 + 3] oxidative cycloaddition, which allows the facile synthesis of polysubstituted terphenyls under mild conditions. Mechanistic studies suggest that vinylethylene carbonates could generate α,β-unsaturated aldehydes as 3-carbon synthons for cycloaddition via a combination process of Pd-catalyzed decarboxylation and β-H elimination.

Organic Letters published new progress about [3+3] Cycloaddition reaction (regioselective). 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

Su, Jianke published the artcileDifluorocarbene enables to access 2-fluoroindoles from ortho-vinylanilines, Name: 3-Acetylthiophene, the main research area is vinylaniline difluorocarbene chemoselective cycloaddition; fluoroindole preparation.

Herein, an efficient and general strategy for the construction of 2-fluoroindoles in which a wide variety of 2-fluoroindoles were accessed with high efficiency and chemoselectivity was reported. Instead of starting from indole skeletons, in this strategy constructed indole scaffolds alongside the incorporation of fluorine atom on C2 position in a formal [4+1] cyclization from readily accessible ortho-vinylanilines and difluorocarbene. In this protocol, com. accessible halodifluoroalkylative reagents provide one carbon and one fluorine atom by cleaving one C-N tertiary bond and forming one C-N bond and one C-C double bond with ortho-vinylanilines. Downstream transformations on 2-fluoroindoles led to various valuable bioactive mols. which demonstrated significant synthetic advantages over previous reports. And mechanistic studies suggest that the reaction undergoes a cascade difluorocarbene-trapping and intramol. Michael addition reaction followed by Csp3-F bond cleavage.

Nature Communications published new progress about [4+1] Cycloaddition reaction (chemoselective). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Name: 3-Acetylthiophene.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Rastogi, Gaurav K. published the artcileVisible-Light-Driven Z -Selective Reaction of Methyl Ketones with DMSO: A Mild Synthetic Approach to Methylthio-Substituted 1,4-Enedione Promoted by Selectfluor, Synthetic Route of 1468-83-3, the main research area is methylthio enedione preparation diastereoselective photochem; methyl ketone dimethyl sulfoxide Kornblum reaction aldol.

Here a simple, visible-light-driven Z-selective synthesis of methylthio-substituted 1,4-enediones I (Ar = C6H5, 3-ClC6H4, 2-furyl, etc.) in a single step promoted by Selectfluor is disclosed. DMSO is used as both the ‘thio’ source and the solvent. Mol. iodine and potassium persulfate are used as catalyst and oxidant, resp. White light (CFL-30W) is used as the light source. The proposed mechanism involves a Kornblum reaction followed by aldol reaction.

Synthesis published new progress about Aldol condensation catalysts, stereoselective. 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Synthetic Route of 1468-83-3.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Shen, Lu published the artcilePhosphine-Based Hyper-Cross-Linked Polymer-Supported Neutral Gold(I) Complex as a Recyclable Catalyst for the Regioselective Hydration of Alkynes to Ketones, Product Details of C6H6OS, the main research area is phosphine based hypercross linked polymer supported gold catalyst preparation; methyl ketone regioselective preparation; terminal alkyne hydration gold catalyst.

A phosphine-based hyper-cross-linked polymer-supported neutral gold(I) complex, Au@HCPs-PPh3, which was synthesized by incorporation of [(Me2S)AuCl] into a phosphine-based hyper-cross-linked polymer, was proven to be an efficient and general heterogeneous catalyst for the regioselective hydration of a series of alkynes to ketones RC(O)Me [R = t-Bu, 4-MeC6H4, 4-BrC6H4, etc.]. Furthermore, the synthesized catalyst was recycled six times without an obvious decrease in the catalytic activity.

ACS Applied Polymer Materials published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Product Details of C6H6OS.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Tanaka, Kouichi published the artcileReductive Amination of Ketonic Compounds Catalyzed by Cp*Ir(III) Complexes Bearing a Picolinamidato Ligand, HPLC of Formula: 1468-83-3, the main research area is ketone reductive amination picolinamidato iridium; amine preparation; picolinamidato iridium reductive amination catalyst.

Cp*Ir complexes bearing a 2-picolinamide moiety serve as effective catalysts for the direct reductive amination of ketonic compounds to give primary amines under transfer hydrogenation conditions using ammonium formate as both the nitrogen and hydrogen source. The clean and operationally simple transformation proceeds with a substrate to catalyst molar ratio (S/C) of up to 20,000 at relatively low temperature and exhibits excellent chemoselectivity toward primary amines.

Journal of Organic Chemistry published new progress about Amines Role: SPN (Synthetic Preparation), PREP (Preparation). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, HPLC of Formula: 1468-83-3.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Luo, Xianglin published the artcileMetal-Free Oxidative Esterification of Ketones and Potassium Xanthates: Selective Synthesis of α-Ketoesters and Esters, Recommanded Product: 3-Acetylthiophene, the main research area is ketone potassium xanthate oxidative esterification bond formation cleavage; ketoester preparation; ester preparation.

A novel and efficient oxidative esterification for the selective synthesis of α-ketoesters and esters has been developed under metal-free conditions. In the protocol, various α-ketoesters and esters are available in high yields from com. available ketones and potassium xanthates. Mechanistic studies have proven that potassium xanthate not only promotes oxidative esterification but also provides an alkoxy moiety for the reaction, which involves the cleavage and reconstruction of C-O bonds.

Journal of Organic Chemistry published new progress about Esters Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Chai, Guo-Li published the artcileChiral Hydroxytetraphenylene-Catalyzed Asymmetric Conjugate Addition of Boronic Acids to Enones, Formula: C6H6OS, the main research area is chiral hydroxytetraphenylene catalyst enone asym conjugate addition boronic acid.

(S)-2,15-Br2-DHTP-catalyzed asym. conjugate addition of boronic acids to β-trifluoromethyl α,β-unsaturated ketones and enones was studied. The reaction afforded the corresponding Michael addition products in moderate to high yields with excellent enantioselectivities (up to 99:1 er). This catalytic system features mild reaction conditions, high efficiency, and tolerance to heteroarylboronic acids.

Organic Letters published new progress about Addition reaction catalysts (chiral hydroxytetraphenylenes). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Formula: C6H6OS.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Wu, Qiuyue published the artcileRegio- and stereoselective synthesis of thiazoline derivatives via the thioketene-induced ring expansion of aziridines, Quality Control of 1468-83-3, the main research area is thiazoline preparation regioselective stereoselective; thiadiazole alkylaziridine ring expansion.

Metal-free thioketene-induced ring expansion of aziridines I (R = C6H5, CH(CH3)2, 1-naphthyl, etc.) gave 4-alkylthiazolines II (R1 = Me, Ph, 2-pyridyl, etc.; R2 = H) stereospecifically from 2-alkylaziridines I through an intramol. substitution at the less substituted ring carbon and 5-arylthiazolines II stereoselectively from 2-arylaziridines I via tandem ring cleavage and formation through intimate ion-pair intermediates after nucleophilic addition of aziridines to thioketenes generated from 4-substituted 1,2,3-thiadiazoles III in the presence of a base.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aziridines Role: RCT (Reactant), RACT (Reactant or Reagent). 1468-83-3 belongs to class benzothiophene, name is 3-Acetylthiophene, and the molecular formula is C6H6OS, Quality Control of 1468-83-3.

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem