Day: December 1, 2022

Ma, Dawei published the artcileEfficient and economical access to substituted benzothiazoles: copper-catalyzed coupling of 2-haloanilides with metal sulfides and subsequent condensation, Recommanded Product: 2-(4-Aminophenyl)-6-methylbenzothiazole, the publication is Angewandte Chemie, International Edition (2009), 48(23), 4222-4225, S4222/1-S4222/18, database is CAplus and MEDLINE.

The first metal-catalyzed direct coupling of metal sulfides with aryl halides and subsequent intramol. condensation provided substituted benzothiazoles. A wide range of functional groups are tolerated under the reaction conditions.

Angewandte Chemie, International Edition published new progress about 92-36-4. 92-36-4 belongs to thiazole, auxiliary class Organic Pigment, name is 2-(4-Aminophenyl)-6-methylbenzothiazole, and the molecular formula is C14H12N2S, Recommanded Product: 2-(4-Aminophenyl)-6-methylbenzothiazole.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Shang, Yuhao published the artcilePolyphenol Profiles and Antioxidant Activities of Non-centrifugal Sugars Derived from Different Varieties of Membrane-Clarified Sugarcane Juice, Safety of Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), the publication is Sugar Tech (2022), 24(2), 614-625, database is CAplus.

The objectives of this research were to determine the sugar compositions, polyphenol contents and antioxidant effects of non-centrifugal sugars (NCS) of different sugarcane varieties. The polyphenols contents and compounds of nine NCSs obtained from the juices of different sugarcane varieties clarified with a 50 nm ceramic membrane (M-NCSs) were measured via ultraperformance liquid chromatog.-mass spectrometry (UPLC-MS). Their antioxidant activities were investigated via 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging, 2, 2′-azino-bis-(3-Et benzothia-zoline-6-sulfonic acid) (ABTS) assay, β-carotene-linoleate assays, and ferrous and cupric ion chelating assays. Results showed that the phenolic compound with the highest content was gallic acid, and all samples were abundant in phenolics, including flavonoids, with high antioxidative activities. The content of phenolics and flavonoids, ranged from 17.24 to 21.14 mg/mL and from 203.55 to 350.37μg/mL, resp. Among these M-NCSs, Funong 41 (G) genotype had the best DPPH free radical scavenging activity. The GUC 23-2 (A1) genotype showed the best ABTS free radical scavenging activity. β-Carotene-linoleate assays revealed that the 15-6013 (B2) genotype exhibited the best antioxidant activity. The Guitang 42 (E) genotype displayed the best ferrous ion chelating activity. The Zhongzhe 9 (F) genotype presented the best cupric ion chelating activity. In summary, sugarcane variety influenced the polyphenols contents and antioxidant effects of M-NCSs. This study lays a foundation for the further study of M-NCSs.

Sugar Tech published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C22H23ClN4, Safety of Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate).

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Lin, Derong published the artcileComparison of apple polyphenol-gelatin binary complex and apple polyphenol-gelatin-pectin ternary complex: Antioxidant and structural characterization, HPLC of Formula: 30931-67-0, the publication is LWT–Food Science and Technology (2021), 111740, database is CAplus.

Polyphenol-gelatin binary complex and polyphenol-gelatin-pectin ternary complex were synthesized. The differences in antioxidant activity between the binary complex and ternary complex were evaluated by using ABTS, DPPH, and reducing power assays. The differences in structural characterization between the binary complex and ternary complex were investigated by SEM (SEM), NMR (¹H and ¹³C NMR), and Fourier transform IR (FT-IR) spectroscopy. The reducing power assays of the ternary complex was greater than that of the binary complex. The maximum of ABTS•+ scavenging activity of the binary complex and the ternary complex was 98.1% and 99.3%, resp., and the maximum DPPH• scavenging activity was 84.7% and 87.6%, resp. The results of structural characterization showed that they were very similar in structure. Both complexes are mainly composed of hydrogen bonds and hydrophobic interactions, but the ternary complex is more tightly bound. In addition, the surface is smoother, and the gap is smaller.

LWT–Food Science and Technology published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C18H24N6O6S4, HPLC of Formula: 30931-67-0.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Zhou, Huaxi published the artcileRole of NOM in the Photolysis of Chlorine and the Formation of Reactive Species in the Solar/Chlorine System, COA of Formula: C18H24N6O6S4, the publication is ACS Omega (2022), 7(9), 7769-7776, database is CAplus and MEDLINE.

The solar/chlorine system has been proposed as a novel advanced oxidation process (AOP) for efficient pollutant degradation and water disinfection by producing a series of reactive species including hydroxyl radicals (HO^•), chlorine radicals (Cl^•), and so forth. In this study, the role of natural organic matter (NOM) in the photolysis of free available chlorine (FAC) and the formation of HO^• and Cl^• in the solar/chlorine system was investigated employing nitrobenzene and benzoic acid as selective chem. probes. The decay rate of FAC was significantly accelerated in the presence of NOM at pH 5.5 under simulated solar irradiation, likely due to the photoreaction between FAC and the photoexcited NOM. The decay rate of FAC increased upon increasing the electron-donating capacity of NOM, which indicated that phenolic components play a significant role in the photodegradation of FAC. This acceleration mechanism was further verified using 4-nitrophenol as a model phenolic compound NOM promoted Cl^• formation and quenched HO^• in the solar/chlorine system. The proposed reaction mechanism included the reaction of excited singlet phenolic compounds in NOM with FAC, which yielded Cl^•. This study provides a useful insight into future applications for using the solar/chlorine system as a novel AOP for wastewater treatment or disinfection.

ACS Omega published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C11H15NO2, COA of Formula: C18H24N6O6S4.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Chen, Shanping published the artcileA Mild Two-Step Synthesis of Structurally Valuable Indole-Fused Derivatives, Computed Properties of 95-24-9, the publication is Journal of Organic Chemistry, database is CAplus and MEDLINE.

A mild two-step synthetic approach for the preparation of structurally valuable indolo[3′,2′:4,5]pyrrolo[3,2,1-kl]phenothiazines, e.g., I, was developed. In this work, cyclohexanone was used as the key bridge to connect the indole and phenothiazine frameworks to construct a structurally valuable indole-fused derivative The present protocol achieved the cascade construction of multiple C-hetero bonds, affording a convenient approach access to hexacyclic-fused system that contained both indole and phenothiazine, two privileged skeletons.

Journal of Organic Chemistry published new progress about 95-24-9. 95-24-9 belongs to thiazole, auxiliary class Organic Pigment, name is 6-Chlorobenzothiazol-2-ylamine, and the molecular formula is C7H5ClN2S, Computed Properties of 95-24-9.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica