56075-39-9Relevant academic research and scientific papers
Metal-Free Synthesis of Unsymmetrical Aryl Selenides and Tellurides via Visible Light-Driven Activation of Arylazo Sulfones
Fagnoni, Maurizio,Li, Ankun,Li, Yuxuan,Liu, Junjie,Lu, Kui,Protti, Stefano,Shan, Xiwen,Tian, Miaomiao,Zhao, Xia
, p. 7358 - 7367 (2020/12/01)
A protocol for the visible light driven preparation of unsymmetrical (hetero)aryl selenides and tellurides is described herein. The method exploits the peculiar photoreactivity of arylazo sulfones that act as thermally stable, precursors of aryl radicals under both photocatalyst- and additive-free conditions. The method developed shows an impressive versatility (more than fifty compounds isolated).
Visible light-promoted formation of C-B and C-S bonds under metal- A nd photocatalyst-free conditions
Blank, Lena,Fagnoni, Maurizio,Protti, Stefano,Rueping, Magnus
, p. 1243 - 1252 (2019/02/26)
A green, efficient, photoinduced synthesis of arylboronic esters and aryl sulfides has been developed. Bench stable arylazo sulfones were used as radical precursors for a photocatalyst- A nd additive-free carbon-heteroatom bond formation under visible light. The protocols are applicable to a wide range of substrates, providing products in good yields.
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.
Additive- and Photocatalyst-Free Borylation of Arylazo Sulfones under Visible Light
Xu, Yuliang,Yang, Xinying,Fang, Hao
, p. 12831 - 12837 (2018/10/20)
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.
A Visible-Light-Driven, Metal-free Route to Aromatic Amides via Radical Arylation of Isonitriles
Malacarne, Marco,Protti, Stefano,Fagnoni, Maurizio
supporting information, p. 3826 - 3830 (2017/11/15)
The photochemical metal-free carboamidation of aryl radicals has been exploited for the preparation of aromatic amides, including hetero- and polyaromatic derivatives, under visible light irradiation of arylazo sulfones in the presence of isocyanides in aqueous acetonitrile. The process was useful for the smooth preparation of the antidepressant moclobemide. (Figure presented.).
Visible light promoted metal- and photocatalyst-free synthesis of allylarenes
Dossena, Alessandro,Sampaolesi, Susanna,Palmieri, Alessandro,Protti, Stefano,Fagnoni, Maurizio
, p. 10687 - 10692 (2018/03/09)
The metal- and photocatalyst-free synthesis of substituted allylarenes has been carried out under visible light driven conditions. The process was based on the photogeneration of aryl radicals from arylazo sulfones and their ensuing reaction with allyl sulfones. The developed procedure was very efficient when using substrates bearing electron-withdrawing groups, and allowed for the preparation of α-benzyl styrenes and 2-benzyl acrylates in good yields.
