Chemical Properties
white to light brownish crystalline powder
Uses
5-Methoxyindole (cas# 1006-94-6) is a compound useful in organic synthesis. It can be used to synthesis 1-(Phenylsulfonyl)-5-methoxy-1H-indole.
Definition
ChEBI: 5-methoxyindole is a member of indoles.
Preparation
The synthesis of 5-methoxyindole from 5-methoxy-2-oxindole: Conversion of 5-methoxy-2-oxindole to 5-methoxyindole was accomplishedby the chlorination of 5-methoxy-2-oxindole with triphenylphosphine-carbontetrachloride in acetonitrile followed by the catalytic reduction of a chlorine atom in 66% total yield.
Reactions
5-methoxyindole was treated with sodium hydroxide and phenylsulfonyl chloride in the presence of a catalytic amount of tetrabutylammonium bromide to afford 1-(phenylsulfonyl)indole and 5-methoxy-1-(phenylsufonyl)indole in excellent yields of 100%.
Synthesis
The synthesis method of 2-pyridinecarboxaldehyde:the three-component coupling reaction of dicarbonyl compounds, aldehydes, and urea/thiourea catalyzed by indium chloride can be efficiently synthesized.
Purification Methods
Crystallise 5-methoxyindole from cyclohexane pet ether or pet ether/Et2O. [Saito & Kikugawa J Heterocycl Chem 16 1325 1979, Beilstein 21 III/IV 765, 21/3 V 18.]
