133776-80-4Relevant academic research and scientific papers
Polysubstituted ethylene compound as well as preparation method and application thereof
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Paragraph 0125-0129; 0310-0314, (2020/12/30)
The invention discloses a polysubstituted ethylene compound as well as a preparation method and application thereof. The invention particularly discloses a preparation method of a polysubstituted ethylene compound as shown in a formula III, which comprises the following step: in an organic solvent, carrying out reaction as shown in the specification on a compound as shown in a formula I and a compound as shown in a formula II in the presence of a palladium catalyst, a phosphine ligand and alkali to obtain the polysubstituted ethylene compound as shown in the formula III. The preparation methodcan be suitable for various types of substrates, and the configuration of double bonds is controllable.
Palladium- and nickel-catalyzed kumada cross-coupling reactions of gem -difluoroalkenes and monofluoroalkenes with Grignard reagents
Dai, Wenpeng,Xiao, Juan,Jin, Guanyi,Wu, Jingjing,Cao, Song
, p. 10537 - 10546 (2015/02/19)
A novel Kumada-Tamao-Corriu cross-coupling reaction of gem-di- or monofluoroalkenes with Grignard reagents, with or without β-hydrogen atoms, in the presence of a catalytic amount of palladium- or nickel-based catalysts has been developed. The reaction is performed under mild conditions (room temperature or reflux in diethyl ether for 1-2 h) and leads to di-cross- or mono-cross-coupled products in good to high yields.
Ipso substitution of triarylvinyl cations by alkoxide anions
Kitamura, Tsugio,Kabashima, Takashi,Nakamura, Ichizo,Fukuda, Tetsuro,Taniguchi, Hiroshi
, p. 7255 - 7261 (2007/10/02)
Photolysis and solvolysis of triarylbromoethanes 1 in the presence of alkoxide anions in alcohols resulted in significant formation of products derived from ipso substitution by alkoxide anions. Photolysis of 1-aryl-1-bromo-2,2-diphenylethenes 1Aa and 1Ab
