2262-08-0Relevant academic research and scientific papers
Pd-Catalyzed Intermolecular Transthiolation of Ar-OTf Using Methyl 3-(Methylthio) Propanoate as a Thiol Surrogate
Pan, Dandan,Xu, Shasha,Tian, Qingqiang,Li, Yahui
supporting information, p. 4616 - 4619 (2021/09/10)
A method for the odorless synthesis of unsymmetrical sulfides via Csp2?O and Csp3?S bond activation is presented. Using methyl 3-(methylthio) propanoate as a MeSH surrogate, a series of substituted aryl methyl sulfides have been obtained in moderate to good yields. This catalytic protocol can also tolerate methyl 3-(methylthio)propionate derivatives to afford the corresponding aryl sulfides.
Electrochemical Trifluoromethylation of Thiophenols with Sodium Trifluoromethanesulfinate
Zhu, Xing-Xing,Wang, Huai-Qin,Li, Chen-Guang,Xu, Xiao-Lan,Xu, Jun,Dai, Jian-Jun,Xu, Hua-Jian
, p. 16114 - 16120 (2021/02/03)
We developed an electrochemical trifluoromethylation of thiophenols without the use of metal catalysts and oxidants. This reaction features mild reaction conditions, readily available substrate, as well as moderate to good yields. In addition, this protocol can be easily scaled up with moderate efficiency.
Transition-Metal-Free Synthesis of Aryl Trifluoromethyl Thioethers through Indirect Trifluoromethylthiolation of Sodium Arylsulfinate with TMSCF3
Zheng, Changge,Jiang, Chao,Huang, Shuai,Zhao, Kui,Fu, Yingying,Ma, Mingyu,Hong, Jianquan
supporting information, p. 6982 - 6986 (2021/09/08)
Herein, we report an indirect trifluoromethylthiolation of sodium arylsulfinates. This transition-metal-free reaction significantly provides an environmentally friendly and practical synthetic method for aryl trifluoromethyl thioethers using commercial Ruppert-Prakash reagent TMSCF3. This approach is also a potential alternative to the current industrial production method owing to facile substrates, excellent functional group compatibility, and operational simplicity.
Metal-Free Trifluoromethylthiolation of Arylazo Sulfones
Li, Ankun,Li, Yuxuan,Liu, Junjie,Chen, Jingqi,Lu, Kui,Qiu, Di,Fagnoni, Maurizio,Protti, Stefano,Zhao, Xia
, p. 1292 - 1299 (2021/01/14)
A visible-light-driven protocol for the synthesis of aryl trifluoromethyl thioethers under photocatalyst- and metal-free conditions has been pursued. The procedure exploits the peculiar properties of arylazo sulfones (having electron-rich or electron-poor substituents on the (hetero)aromatic ring) as photochemical precursors of aryl radicals and S-trifluoromethyl arylsulfonothioates as easy-to-handle trifluoromethylthiolating agents.
A process for converting substituted phenyl diazonium salts into [(trifluoromethyl)thio]benzene
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Paragraph 0062-0069, (2019/12/02)
The invention discloses a synthetic method of [(trifluoromethyl)thio]benzene compounds, particularly a method for converting substituted phenyl diazonium salts into [(trifluoromethyl)thio]benzene. Themethod comprises the following steps: under white light
Transition-Metal-Free ipso-Trifluoromethylthiolation of Lithium Aryl Boronates
Shen, Feng,Zheng, Hanliang,Xue, Xiao-Song,Lu, Long,Shen, Qilong
, p. 6347 - 6351 (2019/08/20)
A transition-metal-free direct trifluoromethylthiolation of the ipso-carbon of lithium aryl boronates with trifluoromethanesulfenate under mild conditions was described. In addition, late-stage site-selective C-H borylation/trifluoromethylation and C-Cl b
Copper(I)-promoted trifluoromethylthiolation of arenediazonium salts with AgSCF3
Zheng, Changge,Liu, Yang,Hong, Jianquan,Huang, Shuai,Zhang, Wei,Yang, Yupeng,Fang, Ge
, p. 1404 - 1407 (2019/05/01)
An efficient method for trifluoromethylthiolation of arenediazonium salts has been developed in mild conditions with a stable and convenient AgSCF3. It provides a straightforward and convenient way for the synthesis of trifluoromethylthiolated compound from diazonium salts in moderate to good yields.
Metal-free trifluoromethylthiolation of arenediazonium salts with Me4NSCF3
Bertoli, Giulia,Exner, Benjamin,Evers, Mathies V.,Tschulik, Kristina,Goo?en, Lukas J.
, p. 132 - 136 (2018/04/05)
A metal-free entry to the pharmaceutically meaningful substrate class of trifluoromethyl thioethers has been developed starting from widely available arenediazonium salts and commercially available Me4N+SCF3?. This reaction proceeds within one hour at 0 °C and is applicable to a wide range of functionalized substrates.
Sandmeyer-Type Trifluoromethylthiolation and Trifluoromethylselenolation of (Hetero)Aromatic Amines Catalyzed by Copper
Matheis, Christian,Wagner, Victoria,Goossen, Lukas J.
supporting information, p. 79 - 82 (2016/01/25)
Aromatic and heteroaromatic diazonium salts were efficiently converted into the corresponding trifluoromethylthio- or selenoethers by reaction with Me4NSCF3 or Me4NSeCF3, respectively, in the presence of catalytic amounts of copper thiocyanate. These Sandmeyer-type reactions proceed within one hour at room temperature, are applicable to a wide range of functionalized molecules, and can optionally be combined with the diazotizations into one-pot protocols.
A mild and fast photocatalytic trifluoromethylation of thiols in batch and continuous-flow
Straathof, Natan J. W.,Tegelbeckers, Bart J. P.,Hessel, Volker,Wang, Xiao,Nol, Timothy
, p. 4768 - 4773 (2015/01/09)
S-CF3 bonds are important structural motifs in various pharmaceutical and agrochemical compounds. However, their preparation remains a major challenge in synthetic organic chemistry. Here, we report the development of a mild and fast photocatalytic trifluoromethylation of thiols. The combination of commercially available Ru(bpy)3Cl2, visible light and inexpensive CF3I gas proved to be an efficient method for the direct trifluoromethylation of thiols. The protocol is demonstrated on a wide range of aromatic, hetero-aromatic and aliphatic substrates in both batch and continuous microflow (32 examples, 52-98% yield). Process intensification through continuous microflow application resulted in a 15-fold increase in production rate (0.25 mmol min-1) due to improved gas-liquid mass transfer, enhanced irradiation as well as convenient handling of the gaseous CF3 source. Furthermore, the efficiency of the flow process allowed to reduce the amount of CF3I (1.1 equivalent) to reach full conversion. This journal is
