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ChemicalBook CAS DataBase List 6-chloro-1H-Indole-5-carboxylic acid
256935-86-1

6-chloro-1H-Indole-5-carboxylic acid synthesis

2synthesis methods
-

Yield:-

Reaction Conditions:

with sodium hydroxide;water in methanol at 50; for 4 h;

Steps:

3.E

To a solution of 6-chloro-1H-indole-5-carboxylic acid methyl ester (6.0 g, 28.7 mmol) in 200 mL MeOH and 200 mL water was added NaOH (6.0 g) and the mix was heated at 50° C. for 4 h. The solution was cooled, diluted with water and acidified to pH 2-3 and extracted with EtOAc, washed with water and brine. The organic layer was dried with Na2SO4 and concentrated to give the desired product. M+H+(1196).

References:

US2004/142940,2004,A1 Location in patent:Page/Page column 14

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