Nickel-Catalyzed Decarbonylative Cycloaddition of Benzofuran-2,3-diones with Alkynes to Flavones
Using dppe as the ligand, the Nickel-catalyzed decarbonylative cycloaddition of benzofuran-2,3-diones with alkynes was established, and a variety of functional flavones were synthesized in 65–99% yields. Terminal alkynes with substituted phenyl groups and internal alkynes such as aryl acyl acetylenes and diphenylacetylenes are suitable for this reaction. The effects of bases on the reactions of different types of alkyne substrates were also investigated and discussed. (Figure presented.).
Zhang, Yu-Yang,Li, Han,Jiang, Xiaoding,Subba Reddy, Chitreddy V,Liang, Hao,Zhang, Yaqi,Cao, Rihui,Sun, Raymond Wai-Yin,Tse, Man Kin,Qiu, Liqin
supporting information
p. 525 - 530
(2021/12/22)
Ruthenium-Me-BIPAM-catalyzed addition reaction of aryl-boronic acids to benzofuran-2,3-diones for the enantioselective synthesis of 3-aryl-3-hydroxybenzofuran-2-ones
We have developed an enantioselective synthesis of 3-aryl-3-hydroxybenzofuran-2-ones via the ruthenium-catalyzed 1,2-addition of arylboronic acids to benzofuran-2,3-diones. The use of RuCl2(PPh3)3 with a chiral bidentate p
Yohda, Masaaki,Yamamoto, Yasunori
p. 1430 - 1435
(2015/12/09)
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