56075-36-6Relevant academic research and scientific papers
Additive- and Photocatalyst-Free Borylation of Arylazo Sulfones under Visible Light
Xu, Yuliang,Yang, Xinying,Fang, Hao
, p. 12831 - 12837 (2018)
We developed a photocatalyst-free and additive-free, visible light induced borylation reaction using arylazo sulfones as starting material. This protocol shows some advantages such as mild conditions, simple equipment, and wide substrate scope, which gives a complementary protocol for the preparation of arylboronates.
Process for converting substituted arylamine into arylazomethyl sulfone
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Paragraph 0076-0081, (2021/06/26)
The invention discloses a method for converting substituted arylamine into arylazomethyl sulfone. The method comprises the following steps of: uniformly mixing arylamine, sodium nitrite and an aqueous tetrafluoroboric acid solution, conducting reacting at 0-5 DEG C for 1-2 hours, and performing filtering to remove water so as to obtain a solid aryldiazonium salt; and uniformly mixing the aryldiazonium salt, sodium methanesulfinate and a solvent, conducting reacting for 8-12 hours at a temperature of 0-5 DEG C, performing filtering to remove insoluble solids, concentrating a filtrate obtained after filtering and carrying out recrystallizing to obtain solid arylazomethyl sulfone. According to the invention, water in the aqueous tetrafluoroboric acid solution is directly used as a reaction solvent in the first step, and 1,2-dichloroethane is used as a solvent in the second step, so the problem of low yield of existing preparation methods for arylazomethyl sulfone can be well improved.
Visible-Light-Driven Synthesis of Arylstannanes from Arylazo Sulfones
Lian, Chang,Yue, Guanglu,Mao, Jinshan,Liu, Danyang,Ding, Yi,Liu, Zerong,Qiu, Di,Zhao, Xia,Lu, Kui,Fagnoni, Maurizio,Protti, Stefano
supporting information, p. 5187 - 5191 (2019/07/03)
The visible-light-driven preparation of (hetero)aryl stannanes was carried out under both photocatalyst- and metal-free conditions via irradiation of arylazo sulfones in the presence of hexaalkyldistannanes. The reaction shows a high efficiency and a wide substrates scope. The resulting crude organotin derivatives can be directly employed in a Stille protocol.
Visible Light-Driven, Photocatalyst-Free Arbuzov-Like Reaction via Arylazo Sulfones
Qiu, Di,Lian, Chang,Mao, Jinshan,Ding, Yi,Liu, Zerong,Wei, Liyan,Fagnoni, Maurizio,Protti, Stefano
supporting information, p. 5239 - 5244 (2019/11/11)
A visible light-induced formation of Aryl-Phosphorous bonds starting from arylazo sulfones and triaryl (or trialkyl)phosphites in the absence of any photoredox catalyst and any additives was developed. This reaction showed a broad substrate scope and afforded (hetero)aryl phosphonates in good yields and in up to the gram scale.
