- Synthesis of di-tert-butylphenol [...] biphenyl compounds (by machine translation)
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The invention discloses a method for synthesizing tert-[...] biphenyl compounds, which belongs to the field of organic synthesis. In the oxygen free atmosphere, in order to di-tert-butylphenol [...] as raw material, under the action of the palladium catalyst, with the O-bromophenylacetic reaction, then the obtained by coupling with aryl boric acid di-tert-butylphenol [...] biphenyl compound. Compared with the prior art the invention less reaction steps, the operation is simple, high yield, is more suitable for industrial production. (by machine translation)
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Paragraph 0014
(2019/03/06)
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- Palladium-catalyzed R2(O)P directed C(sp2)-H acetoxylation
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A novel and efficient Pd-catalyzed C-H acetoxylation is described. The approach uses R2(O)P as a directing group to synthesize various substituted 2′-phosphorylbiphenyl-2-OAc compounds. Notably, the reaction exhibits smooth operation under mild conditions and shows good functional group tolerance. Products are obtained with high selectivity and yields. This journal is the Partner Organisations 2014.
- Zhang, Heng,Hu, Rong-Bin,Zhang, Xiao-Yu,Li, Shi-Xia,Yang, Shang-Dong
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supporting information
p. 4686 - 4689
(2014/05/06)
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- An Improved Synthesis of Functionalized Biphenyl-Based Phosphine Ligands
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Functionalized dicyclohexyl- and di-tert-butylphosphinobiphenyl ligands are prepared by the reaction of arylmagnesium halides with benzyne, followed by the addition of a chlorodialkylphosphine. This one-pot procedure is considerably less expensive and time-consuming than the method used previously to prepare such ligands. The cost of introducing the dicyclohexylphosphine group can be decreased by preparing chlorodicyclohexylphosphine from PCl3 and cyclohexylmagnesium chloride, and using the reagent without further purification. The new method is significant, as a variety of ligands can be produced in useful amounts by a procedure that is simple, with starting materials that are relatively inexpensive, and, in most cases, without chromatographic purification.
- Tomori, Hiroshi,Fox, Joseph M.,Buchwald, Stephen L.
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p. 5334 - 5341
(2007/10/03)
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- Highly active and selective catalysts for the formation of α-aryl ketones
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Bulky, electron-rich phosphine ligands with a biphenyl backbone, when combined with Pd(OAc)2, give highly active catalysts for the α-arylation of ketones. The ligand 2-methyl-2'-dicyclohexylphosphinobiphenyl is particularly effective, and with
- Fox, Joseph M.,Huang, Xiaohua,Chieffi, Andre,Buchwald, Stephen L.
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p. 1360 - 1370
(2007/10/03)
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