29265-81-4Relevant academic research and scientific papers
Halogenation of 1,1-diarylethylenes by N-halosuccinimides
Zhang, Ge,Bai, Rui-Xue,Li, Chu-Han,Feng, Chen-Guo,Lin, Guo-Qiang
supporting information, p. 1658 - 1662 (2018/12/11)
An efficient method for the preparation of 2,2-diarylvinyl halides from the corresponding 1,1-diarylethylenes has been developed. N-Halosuccinimides (N-bromosuccinimide or N-chlorosuccinimide) were used as the halogenation reagents. The practicability of this method is highlighted by its simple operation, broad substrate scope and capability for large-scale reaction.
Photocatalytic, Phosphoranyl Radical-Mediated N-O Cleavage of Strained Cycloketone Oximes
Xia, Peng-Ju,Ye, Zhi-Peng,Hu, Yuan-Zhuo,Song, Dan,Xiang, Hao-Yue,Chen, Xiao-Qing,Yang, Hua
supporting information, p. 2658 - 2662 (2019/04/25)
A photoinduced, phosphoranyl radical-mediated protocol for the direct N-O cleavage of strained cycloketone oximes via a polar/SET crossover process was developed for the first time. This visible-light-driven direct N-O activation mode for oxime offers beneficial features such as streamlined synthetic process and versatile photochemical reactivities. Consequently, the alkenes and α-trifluoromethyl alkenes with varied electronic and structural features acted as competent radical receptors in this protocol, enabling facile accesses to a range of elongated cyano and/or gem-difluoroalkene-bearing compounds.
Method for synthesizing alpha,beta-unsaturated selenium compound
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Paragraph 0062-0065, (2019/11/28)
The invention belongs to the field of organic selenium chemistry, and particularly relates to a method for synthesizing an alpha,beta-unsaturated selenium compound. The compound is synthesized by using an aryl boronic acid compound, elemental selenium and a diarylethene compound as reaction substrates. The method avoids toxic selenium-mercury reagents and toxic selenide reagents, conforms to the modern green development concept, and provides a green and economical method for synthesizing unsaturated selenium compounds in the future.
Metal-free oxidative cross-coupling of diazirines with arylboronic acids
Wu, Guojiao,Zhao, Xia,Ji, Wenzhi,Zhang, Yan,Wang, Jianbo
, p. 1961 - 1963 (2016/02/05)
We report herein a metal-free cross-coupling of diazirines with arylboronic acids under oxidative conditions. The reaction affords a series of substituted olefins. It is proposed that the interaction between the nitrogen on diazirine with arylboronic acid plays a key role in this transformation.
Olefin-assisted iron-catalyzed alkylation of aryl chlorides
Guelak, Samet,Gieshoff, Tim N.,Von Wangelin, Axel Jacobi
, p. 2197 - 2202 (2013/10/01)
A selective and operationally simple ironcatalyzed cross-coupling of aryl chlorides with alkylmagnesium halides has been developed. The reaction tolerates various functional groups and exhibits high chemoselectivity even in the presence of aryl bromides. Mechanistic studies indicate the essential role of the olefin substituent for substrate activation. Competing polymerization and reduction are effectively suppressed.
General and practical one-pot synthesis of dihydrobenzosiloles from styrenes
Kuznetsov, Alexey,Gevorgyan, Vladimir
supporting information; experimental part, p. 914 - 917 (2012/05/05)
A one-pot synthesis of dihydrobenzosiloles from styrenes has been developed. The reaction involves the nickel-catalyzed hydrosilylation of styrene with diphenylsilane, followed by the iridium-catalyzed dehydrogenative cyclization. This method is efficient for both electron-rich and -deficient styrenes and exhibits good functional group tolerance, as well as excellent regioselectivity. The forming dihydrobenzosiloles can be efficiently converted into valuable benzosiloles or 2-hydroxyphenethyl alcohols.
Pd-catalyzed oxidative cross-coupling of N-tosylhydrazones with arylboronic acids
Zhao, Xia,Jing, Jing,Lu, Kui,Zhang, Yan,Wang, Jianbo
supporting information; experimental part, p. 1724 - 1726 (2010/07/06)
The Pd-catalyzed reaction of N-tosylhydrazones and arylboronic acids provides olefin derivatives. This oxidative cross-coupling is suggested to proceed through a migratory insertion process of a Pd carbene intermediate.
