New Advances in Chemical Research in 2021. In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 18514-76-6, name is 5-Nitroquinoxaline, introducing its new discovery. Recommanded Product: 18514-76-6
The rapid and efficient direct C2-arylation of free (NH)-indoles with arylsulfinic acids proceeded through a microwave-accelerated palladium-catalyzed desulfitation reaction. By using PdCl2 as a catalyst, silver acetate as an oxidant, and H2SO4 as an additive, arylsulfinic acids with both electron-donating and electron-withdrawing groups underwent desulfitative coupling with an array of free (NH)-indoles, thereby selectively providing C2-arylindoles in good yields. From C2 shining sea: The direct C2-arylation of free (NH)-indoles with arylsulfinic acids proceeded through a Pd-catalyzed desulfitation reaction. In the presence of an oxidant and an additive, 2-arylindoles were selectively afforded in good yields. Copyright
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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N886 | ChemSpider