7208-11-9Relevant academic research and scientific papers
Bromination of 1,1-diarylethylenes with bromoethane
Yu, Ze,Jiang, Jialiang,Chen, Hongtai,Tang, Xiangyang
supporting information, p. 2544 - 2552 (2021/07/06)
Aliphatic bromide was used as a halogenation reagent in the presence of DMSO, resulting in 2,2-diarylvinyl bromides from the corresponding 1,1-diarylethylenes. This protocol not only provides a convenient and straightforward strategy for the rapid construction of various 2,2-diarylvinyl bromides without bromine and extra oxidants, but also can improve the atom economy of Kornblum oxidative reaction.
Halogenation of 1,1-diarylethylenes by N-halosuccinimides
Zhang, Ge,Bai, Rui-Xue,Li, Chu-Han,Feng, Chen-Guo,Lin, Guo-Qiang
, 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.
Palladium-Catalyzed Domino Reaction for Stereoselective Synthesis of Multisubstituted Olefins: Construction of Blue Luminogens
Hao, Tao-Tao,Liang, Hao-Ran,Ou-Yang, Ying-Han,Yin, Chang-Zhen,Zheng, Xue-Li,Yuan, Mao-Lin,Li, Rui-Xiang,Fu, Hai-Yan,Chen, Hua
, p. 4441 - 4454 (2018/04/26)
The first Pd-catalyzed multicomponent reaction of aryl iodides, alkenyl bromides, and strained alkenes has been developed, which allowed us to synthesize a variety of multisubsituted olefins in yields of 45-96% with excellent stereoselectivity. The configuration of the product was controlled by the configuration of the alkenyl bromides. Moreover, this practical methodology employing readily available substrates was found to be tolerant to a wide range of functional groups. Fifty six examples of highly stereoselective tri- or tetrasubstituted olefins have been successfully synthesized via this methodology. Most of the synthesized tetrasubstituted olefins are good aggregation-induced emission (AIE) luminogens.
Dehydrobromination of 1,1-diaryl-1,2-dibromoalkanes catalyzed by iron and iron bromides. An ion-pair-mediated reaction?
Suarez, Angela R.,Suarez, Alejandra G.,Martin, Sandra E.,Mazzieri, Maria R.
, p. 56 - 60 (2007/10/02)
The participation of ion-paired Lewis acid/Lewis base in the dehydrohalogenations of 1,2-dibromo-1,1-diarylalkanes catalyzed by Fe0 and by Fe(II) and Fe(III) bromides was investigated.The reactivities of the catalyst employed were correlated with their chemical hardness.The influence of para substituents on the phenyl rins of the substrates and the results obtained in Lewis-acid-catalyzed and thermal dehydrobromination of the same compounds were compared.The experimental results could not be explained in terms of a Lewis-acid-catalyzed dehydrobromination.Key words: dehydrohalogenation, bromoalkanes, Lewis acid catalysts, ion-pair mechanism.
Reaction of Olefins with Malonic Acid Derivatives in the Presence of Manganese(III) Acetate
Fujimoto, Noriyuki,Nishino, Hiroshi,Kurosawa, Kazu
, p. 3161 - 3168 (2007/10/02)
The reaction of methylmalonic acid with mono- and disubstituted olefins in the presence of manganese(III) acetate yielded 2-carboxy-2-methyl-4-butanolides in moderate to good yields.The reactions of bromomalonic acid and chloromalonic acid with a variety
