7152-80-9Relevant academic research and scientific papers
Two-step synthesized sulfonic acid functionalized imidazolium thiocyanate solid acid catalyst for thiocyanation of various electron rich arenes by metal-free method in water
Naserifar, Zahra,Ramazani, Ali,Rezayati, Sobhan
, (2022/03/27)
An eco-friendly, highly efficient, and novel sulfonic acid functionalized imidazolium thiocyanate (Imidazole-SO3H)/SCN and sulfonic acid functionalized imidazolium chloride (Imidazole-SO3H)/Cl solid acid catalyst were successfully synthesized. The structure of catalyst was characterized by various analyses such as FT-IR, 1H NMR and 13C NMR spectroscopy. The thiocyanation reaction of various electron rich arenes such as anilines, indoles, phenols, and other aromatic compounds were selected to show the catalytic performance and efficiency of the as-prepared solid acid catalyst, and excellent yields of the corresponding aryl and heteroaryl thiocyanates derivatives were obtained under metal-free and green conditions in water. In addition, one of the important features of current method is when the thiocyanation reaction is carried out with (Imidazole-SO3H)/SCN, this reagent has a dual role in the reaction, both as thiocyanation agent and as acidic group. On the other hand, (Imidazole-SO3H)/Cl as a catalyst plays just as acidic group in reaction. The current procedure offers advantages such as metal-free and green conditions, simple procedure, the use of a commercially available reagent, simple reaction work-up, ease of separation using simple filtration, and suitable performance in the reusability of the catalyst.
Isoquinolinium-N-sulfonic acid thiocyanate/H2O2 as efficient reagent for thiocyanation of N-bearing (hetero)aromatic compounds
Rezayati, Sobhan,Kalantari, Fatemeh,Ramazani, Ali,Ezzatzadeh, Elham
, p. 575 - 590 (2021/05/31)
In the present study, isoquinoline sulfonic acid thiocyanate (isoquinoline-SO3H)SCN and isoquinoline sulfonic acid chloride (isoquinoline-SO3H)Cl as a novel and heterogeneous catalyst were designed and synthesized by a simple and ine
Porphyrin-Based Conjugated Microporous Polymer Tubes: Template-Free Synthesis and A Photocatalyst for Visible-Light-Driven Thiocyanation of Anilines
Zhang, Pengfei,Yin, Yucheng,Wang, Zhengxin,Yu, Chunyang,Zhu, Yizhou,Yan, Deyue,Liu, Weimin,Mai, Yiyong
, p. 3543 - 3553 (2021/04/12)
Conjugated microporous polymers (CMPs) represent an important type of functional materials. In this area, morphological engineering has remained a major challenge. Here, we report the synthesis of porphyrin-based CMP tubes (CMP-1) through a template-free
Selective electrochemical: Para -thiocyanation of aromatic amines under metal-, oxidant- And exogenous-electrolyte-free conditions
Zhang, Ying,Gao, Huanjie,Guo, Jiabao,Zhang, Hao,Yao, Xiaoquan
supporting information, p. 13166 - 13169 (2021/12/20)
An electrochemical oxidative para-C-H-thiocyanation of aromatic amines has been developed to construct thiocyanato aromatic compounds under metal-, oxidant-, and exogenous-electrolyte-free conditions in an undivided cell. The transformation is compatible
Visible light-induced recyclable g-C3N4catalyzed thiocyanation of C(sp2)-H bonds in sustainable solvents
Chen, Xiao-Lan,Qu, Ling-Bo,Yu, Bing,Zeng, Fan-Lin,Zhu, Hu-Lin
supporting information, p. 3677 - 3682 (2021/06/06)
A metal-free photocatalytic strategy for the preparation of thiocyanated heterocycles from inexpensive NH4SCN has been developed using carbon nitride (g-C3N4) as a general heterogeneous catalyst in a green solvent under an
An electrochemical method for deborylative seleno/thiocyanation of arylboronic acids under catalyst- And oxidant-free conditions
He, Dongdong,Yao, Jiaojiao,Ma, Boling,Wei, Jinghao,Hao, Guangguo,Tuo, Xun,Guo, Shengmei,Fu, Zhengjiang,Cai, Hu
supporting information, p. 1559 - 1564 (2020/03/26)
An electrochemical deborylative seleno/thiocyanation of arylboronic acids has been well established to synthesize the corresponding aryl seleno/thiocyanates with good functional group tolerance under ambient conditions. A gram-scale reaction has been performed to highlight the advantages of the protocol. Preliminary mechanistic studies indicate that the oxidation of the seleno/thiocyanate anion occurs prior to that of the arylboronic acid substrate in galvanostatic mode, and that free radicals are involved in the process.
Method for inducing thiocyanation of arylamine compound by visible light
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Paragraph 0083-0086, (2020/08/06)
The invention discloses a method for inducing thiocyanation of an arylamine compound by visible light. Specifically, in the atmosphere of oxygen or air, an arylamine compound, an ammonium thiocyanatecompound and copper chloride dihydrate are added into a
Visible-light-enabled regioselective aerobic oxidative C(sp2)-H thiocyanation of aromatic compounds by Eosin-Y photocatalyst
Yi, Bing,Wen, Xiaoyong,Yi, Ziqi,Xie, Yanjun,Wang, Qiang,Tan, Jian-Ping
supporting information, (2020/11/19)
Herein, visible-light-enabled regioselective aerobic oxidative C(sp2)-H thiocyanation of aromatic compounds has been developed by employing eosin-Y as effective photocatalyst and oxygen as the green terminal oxidant. This process featured green, efficient and operationally simple. Furthermore, the practicality and utility of this protocol was demonstrated by the gram scale synthesis. Mechanistic studies suggested that this reaction was realized via a photoredox radical pathway.
Imposing Latency in Ruthenium Sulfoxide-Chelated Benzylidenes: Expanding Opportunities for Thermal and Photoactivation in Olefin Metathesis
Alassad, Nebal,Goldberg, Israel,Kozuch, Sebastian,Lemcoff, N. Gabriel,Nechmad, Noy B.,Rozenberg, Illya,Segalovich-Gerendash, Gal
, p. 4827 - 4834 (2020/06/01)
Herein we show the design and synthesis of an electron-rich, sulfoxide-chelated, ruthenium benzylidene. In contrast to previously reported sulfoxide-chelated ruthenium benzylidenes, this complex is more stable in a cis-dichloro conformation and is thus latent in typical olefin metathesis reactions. The complex was characterized by NMR, UV-vis, and X-ray spectroscopy, alongside density functional theory computations. The latent precatalyst could be activated thermally and, depending on the solvent, by UV-C or visible light. In addition, an original "thermo-chromatic" orthogonal sequence was developed, further improved by the use of a thioether chelated complex, where a divergent two-step synthesis can lead to a dihydrofuran or a dihydropyran depending only on the order by which the different stimuli, heat or light, are applied.
ARS-TiO2 photocatalyzed direct functionalization of sp2 C-H bonds toward thiocyanation and cyclization reactions under visible light
Hosseini-Sarvari, Mona,Hosseinpour, Zeinab,Koohgard, Mehdi,Sarvestani, Abdollah Masoudi
, p. 1401 - 1407 (2020/03/26)
An ARS-TiO2 photocatalyst has been prepared, by a simple method through stirring a mixture of ARS and TiO2 at room temperature in the dark, to extend the photocatalytic response of titanium dioxide toward the visible light spectrum. The synergic effect of ARS and TiO2 in the photocatalyst system has catalyzed direct C-H functionalization of sp2 C-H bonds toward thiocyanation and cyclization reactions. Several aromatic and heteroaromatic scaffolds (2-phenylamino-thiazole, phenol, aniline, indole and pyrrole derivatives) were treated with the thiocyanate anion at room temperature. Herein, the first report on thiocyanation of phenol and synthesis of 2-aminobenzothiazole derivatives under visible light is presented.
