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ChemicalBook CAS DataBase List 3-(1-methyl-1,2,3,6-tetrahydropyrid-4-yl)indole
17403-03-1

3-(1-methyl-1,2,3,6-tetrahydropyrid-4-yl)indole synthesis

3synthesis methods
-

Yield:17403-03-1 80%

Reaction Conditions:

with potassium hydroxide in methanol; for 18 h;Reflux;

Steps:

11.1

11. 6-(3-Fluoro-4-methoxybenzyl)-3-methyl-2,3,4,7-tetrahydro-1 H-indolo[2,3- c][1 ,7]naphthyridine dihydrochlorideStep 1 : 3-(1-Methyl-1 ,2,3,6-tetrahydropyridin-4-yl)-1 H-indole.; Indole (15.0 g) is suspended in methanol (250 ml), 1-methylpiperidin-4-one (14.4 g) and potassium hydroxide (14.3 g) are added and the reaction mixture is refluxed for 18 h. After that, the mixture is cooled, the crystalline precipi- tate is filtered, washed with methanol and dried to obtain 21.64 g (80%) of 3-(1-methyl-1 ,2,3,6- tetrahydropyridin-4-yl)-1 H-indole. mp. 227° - 2280C.

References:

WO2010/15588,2010,A1 Location in patent:Page/Page column 105-106