15937-10-7Relevant articles and documents
Preparation method of compound 5,6-dihydroxy indoline and halogen acid salts thereof
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Paragraph 0059-0062, (2018/04/01)
The invention relates to a preparation method of a compound 5,6-dihydroxy indoline and halogen acid salts thereof. Phenylethylamine SM-0 sold in the market is used as a raw material and firstly reactswith acyl chloride to obtain amide SM-1; amide SM-1 rea
Studies on the Syntheses of Heterocyclic Compounds. Part 865. A Novel Synthesis of Indole Derivatives by Intramolecular Nucleophilic Aromatic Substitution
Kametani, Tetsuji,Ohsawa, Tatsushi,Ihara, Masataka
, p. 290 - 294 (2007/10/02)
Cyclisation of N-(2-bromo-4,5-dimethoxyphenethyl)acetamide (6) afforded 1-acetyl-2,3-dihydro-5,6-dimethoxy-1H-indole (13) by intramolecular nucleophilic aromatic substitution using sodium hydride and cuprous halide in dimethylformamide.The dihydroindoles (14), (15), and (16) were also synthesised from the corresponding amides (8) and (10) and the carbamate (12) in a similar manner.The dihydroindoles (13), (14), and (16) were converted into the indoles (20) and (21) in excellent yield by oxidation and subsequent alkaline hydrolysis.The 2-oxindoles (26) and (27) were also prepared under similar reaction condition from the phenylacetamide (24) and (25).