97310-92-4Relevant academic research and scientific papers
Synthesis of Novel 1-Phenyl-1H-indole-2-carboxylic Acids. II. Preparation of 3-Dialkylamino, 3-Alkylthio, 3-Alkylsulfinyl, and 3-Alkylsulfonyl Derivatives
Unangst, Paul C.,Connor, David T.,Stabler, S. Russell
, p. 817 - 820 (2007/10/02)
The synthesis of novel indole-2-carboxylic acids with amino- and sulfur-containing substituents in the indole 3-position is described.An Ullmann reaction with bromobenzene converted 1H-indoles with 3-(acetylamino)- and 3-(diethylamino)-substituents into 1-phenyl-1H-indoles.Reaction of 3-unsubstituted indoles with thionyl chloride provided indole 3-sulfinyl chlorides, which reacted with alkyl and aryl Grignard reagents to form the corresponding sulfoxides.The indole sulfoxides thus obtained were reduced to sulfides or oxidized to sulfones.
SYNTHESIS OF N-(INDOL-3-YL)-N',N'-DIALKYLAMIDINES BY THE VILSMEIER REACTION WITH 3-AMINOINDOLES
Simakov, S. V.,Velezheva, V. S.,Kozik, T. A.,Suvorov, N. N.
, p. 61 - 65 (2007/10/02)
3-Aminoindoles substituted at C-2 and C-5 of the indole ring are converted by the action of Vilsmeier complexes into N-(indol-3-yl)-N',N'-dialkylamidines.When C-2 is unsubstituted, the formylation proceeds but not the acetylation of this position.N-(Indol-3-yl)-N',N'-dimethylacetamidine reacts with the complex obtained from DMF and POCl3 to give 2-dimethylamino-3-formyl-δ-carboline.The optimal conditions were found for the conversion of amidines to amides.
