6639-57-2Relevant articles and documents
A selective fluorescence probe based on benzothiazole for the detection of Cr3+
Lv, Ren-Gang,Chen, Shu-Wen,Gao, Yan
, p. 389 - 394 (2017)
A novel benzothiazole-functionalized Schiff-base derivative L was prepared and its metal-ion sensing properties were investigated. Sensor L displays selective naked-eye color change from yellow to green in the presence of Cr3+ in aqueous solution at pH 7.2, while other cations do not interfere with the recognition of Cr3+. The proposed mechanism is supported by Job's plot evaluation, IR and ESI-MS studies. The association constant and detection limit of sensor L to Cr3+ are 5.73×104 m-1 and 2.1×10-8 m, respectively. A B3LYP/6-31G (d,p) basis set was employed for optimization of L and L-Cr3+ complex.
Iodine-catalyzed oxidative annulation: Facile synthesis of pyrazolooxepinopyrazolones: Via methyl azaarene sp3C-H functionalization
Zhang, Xin-Ke,Miao, Xiao-Yu,Zhou, Yu,Wang, Yu-Mei,Song, Ying-Chun,Liu, Hang,Xiong, Yi-Lu,Li, Ling-Yu,Wu, An-Xin,Zhu, Yan-Ping
supporting information, p. 1236 - 1242 (2022/02/19)
An iodine-catalyzed methyl azaarene sp3 C-H functionalization has been developed for the synthesis of a seven-membered O-heterocyclic architecture containing three different heterocyclic aromatic hydrocarbons. This method can be applied to a wide range of substituted methyl azaarenes and diverse 2,4-dihydro-3H-pyrazol-3-ones, and brings about the efficient preparation of 2,9-dihydrooxepino[2,3-c:6,5-c′]dipyrazol-3(7H)-ones in high yields with the merits of low catalyst loading, good functional group tolerance and metal-free conditions.
[1,3]-Claisen rearrangement via removable functional group mediated radical stabilization
Alam, Md Nirshad,Dash, Soumya Ranjan,Mukherjee, Anirban,Pandole, Satish,Marelli, Udaya Kiran,Vanka, Kumar,Maity, Pradip
supporting information, p. 890 - 895 (2021/02/01)
A thermal O-to-C [1,3]-rearrangement of α-hydroxy acid derived enol ethers was achieved under mild conditions. The 2-aminothiophenol protection of carboxylic acids facilitates formation of the [1,3] precursor and its thermal rearrangement via stabilization of a radical intermediate. Experimental and theoretical evidence for dissociative radical pair formation, its captodative stability via aminothiophenol, and a unique solvent effect are presented. The aminothiophenol was deprotected from rearrangement products as well as after derivatization to useful synthons.
Synthesis of new Zn (II) complexes for photo decomposition of organic dye pollutants, industrial wastewater and photo-oxidation of methyl arenes under visible-light
Ahemed, Jakeer,Bhongiri, Yadagiri,Chetti, Prabhakar,Gade, Ramesh,Kore, Ranjith,Pasha, Jakeer,Pola, Someshwar,Rao D, Venkateshwar
, (2021/07/28)
Synthesis of new Schiff's base Zn-complexes for photo-oxidation of methyl arenes and xylenes are reported under visible light irradiation conditions. All the synthesized new ligands and Zn-complexes are thoroughly characterized with various spectral analyses and confirmed as 1:1 ratio of Zn and ligand with distorted octahedral structure. The bandgap energies of the ligands are higher than its Zn-complexes. These synthesized new Zn(II) complexes are used for the photo-fragmentation of organic dye pollutants, photodegradation of food industrial wastewater and oxidation of methyl arenes which are converted into its respective aldehydes with moderate yields under visible light irradiation. The photooxidation reaction dependency on the intensity of the visible light was also studied. With the increase in the dosage of photocatalyst, the methyl groups are oxidized to get aldehydes and mono acid products, which are also identified from LC-MS data. Finally, [Zn(PPMHT)Cl] is with better efficiency than [Zn(PTHMT)Cl] and [Zn(MIMHPT)Cl] for oxidation of methyl arenes is reported under visible-light-driven conditions.
