205578-44-5Relevant articles and documents
Method for synthesizing carbazole derivative
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Paragraph 0013; 0060-0061, (2021/10/05)
The invention aims to provide a method for synthesizing a carbazole derivative. The method is characterized in that palladium chloride is used as a catalyst, 2, 2' - dibromobiphenyl is used as an electrophilic reagent, primary amine is taken as a nucleophile, and the carbazole derivative is directly cross-coupled under the conditions of toluene as a solvent and an air atmosphere. The method has the advantages of high yield, high selectivity, simplicity and convenience in operation and the like.
Synthesis of N-Alkyl and N-H-Carbazoles through SNAr-Based Aminations of Dibenzothiophene Dioxides
Kaga, Atsushi,Nogi, Keisuke,Yorimitsu, Hideki
supporting information, p. 14780 - 14784 (2019/11/13)
Alkyl amines have become available for the synthesis of diverse N-alkyl carbazoles through twofold SNAr aminations of dibenzothiophene dioxides by using alkali metal bases. Of particular importance is the choice of counter cations on alkali metal bases, that is, i) the use of Li base for the efficient intermolecular reaction and ii) the sequential addition of heavier alkali metal bases (Na, K, or Cs) to promote intramolecular cyclization in a one-pot manner. This protocol also enables the cascade synthesis of N-H-carbazoles by using 2-phenylethylamine by removal of the 2-phenethyl group from N-(2-phenethyl) carbazoles in a single operation.
Hypervalent iodine mediated One-Pot C-H functionalization at 2α- Or 3α -position of indole derivatives
Higuchi, Kazuhiro,Inaba, Masato,Naganuma, Asuka,Ishizaki, Takako,Tayu, Masanori,Kawasaki, Tomomi
, p. 2105 - 2121 (2015/01/09)
The one-pot 2α- and 3α-functionalization of 2,3-disubstituted indoles using a hypervalent iodine reagent has been developed. The substitution at the 2α-position of indoles took place using phenyliodinebis(trifluoroacetate) with oxygen and carbon nucleophi