2987-53-3Relevant articles and documents
A rare cobalt(III) paramagnetic derivative incorporating 1-alkyl-2-[(o-thioalkyl)phenylazo]imidazole (SMeaaiNEt): EPR, redox and magnetic interpretation
Nandi, Soumendranath,Das, Kuheli,Datta, Amitabha,Roy, Suman,Garribba, Eugenio,Akitsu, Takashiro,Sinha, Chittaranjan
, p. 75 - 81 (2017)
The condensation of 1-alkyl-2-{(o-thioalkyl)phenylazo}imidazole (SMeaaiNEt), Co(ClO4)2, 6H2O and NaN3 in methanol affords a rare Co(III) paramagnetic complex [Co(SMeaaiNEt)(N3)3] (1). Single crystal X-ray diffraction study of complex 1 reveals that the Co(III) possesses a distorted octahedral environment. The EPR study interprets an unusual high-spin Co(III) species with configuration t2g4eg2 and S?=?2. The temperature dependent magnetic interpretation agrees with the existence of intermolecular antiferromagnetic coupling on the paramagnetic Co(III) center. A cyclic voltammetry study displays for complex 1 two quasi-reversible and one irreversible responses at the negative direction which may be assigned to different reduction systems. DFT computation using optimized geometry is governed to explain the electronic nature of cobalt derivative which is in accordance with the experimental evidence.
Synthesis method of benzo[b] naphtho [2,3-d] thiophene
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Paragraph 0056-0062; 0103-0106, (2022/03/27)
The present invention discloses a method for synthesizing benzo [b] naphthio [2,3-d] thiophene, comprising the following steps: 2-aminobenzo [d] thiazole as a raw material, under the action of alkali and haloalkanes, to prepare 2- (methylthio) aniline; using 2- (methylthio) aniline to prepare (2-iophenyl) (methyl) thiane preparation of 1-iodo-2-(methylsulfonyl) benzene; using 1-iodo-2-(methylsulfonyl) benzene; using 1-iodo-2-(methylsulfonyl) Benzene and compound S5 were prepared to obtain 1-(2-(methyl sulfoxide phenyl)) naphthalene, and 1-(2-(methyl sulfoxidephenyl)) naphthalene was used to obtain benzo[b]naphthalene [2,3-d]thiophene. The present invention employs a green route to obtain high yield, high quality benzo [b] naphthalene [2,3-d] thiophene.
Facile syntheses of 3-trifluoromethylthio substituted thioflavones and benzothiophenes via the radical cyclization
Wang, Lu,Wang, Huaiyu,Meng, Weidong,Xu, Xiu-Hua,Huang, Yangen
supporting information, p. 389 - 392 (2020/03/04)
3-CF3S substituted thioflavones and benzothiophenes were achieved via the reactions of AgSCF3 with methylthiolated alkynones and alkynylthioanisoles, respectively, promoted by persulfate. This protocol possesses good functional group tolerance and high yields. Mechanistic studies suggested that a classic two-step radical process was involved, which includes addition of CF3S radical to triple bond and cyclization with SMe moiety.
Palladium-Catalyzed 2-(Neopentylsulfinyl)aniline Directed C–H Acetoxylation and Alkenylation of Arylacetamides
Barysevich, Maryia V.,Laktsevich-Iskryk, Marharyta V.,Krech, Anastasiya V.,Zhabinskii, Vladimir N.,Khripach, Vladimir A.,Hurski, Alaksiej L.
supporting information, p. 937 - 943 (2020/02/25)
The 2-(neopentylsulfinyl)aniline directing group that promotes rapid palladium-catalyzed C–H acetoxylation and alkenylation of arylacetamides has been developed. The acetoxylation reaches completion within only 40 min at 100 °C and leads to the bis-functionalized products. Alternatively, the reaction can be carried out at room temperature, which is beneficial for sensitive substrates. For the alkenylation, we have developed a protocol in which easily available 1-substituted cyclopropanols were employed as equivalents of vinyl ketones.
