Indole carboxamide derivatives
A kind of technology of carboxamide and indole, applied in the field of indole carboxamide derivatives, can solve the problems without any reports etc.
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[0356] Hereinafter, the production method of the compound of formula (I) is demonstrated in more detail based on an Example. It should be noted that the present invention is not limited to the compounds described in the following examples. In addition, the production method of the raw material compound is shown in the production example. In addition, the production method of the compound of formula (I) is not limited to the production method of the specific examples shown below, and the compound of formula (I) can also be obtained by a combination of these production methods or methods that are obvious to those skilled in the art to manufacture.
[0357] In addition, the following abbreviations may be used in Examples, Production Examples, and Tables described later.
[0358] PEx: production example number, Ex: example number, PSyn: production example number produced by the same method, Syn: example number produced by the same method, Str: chemical structural formula (Me: me...
manufacture example 1
[0362] Sodium borohydride (1.92 g), stirred at room temperature for 2 hours. Acetic acid was added to the reaction mixture under ice cooling, followed by water, and the precipitated solid was collected by filtration and dried to obtain 5-methoxy-3-(2-nitroethyl)-1H-indole- Ethyl 2-carboxylate (4.01 g).
manufacture example 2
[0364] Using continuous hydrogenation reaction device H-Cube (registered trademark) (ThalesNano company), 5-methoxy-3-(2-nitroethyl)-1H-indole-2-carboxylic acid ethyl ester (500mg), tetrahydrofuran (40.0mL) and acetic anhydride (2.00mL) mixed solution into the Raney nickel box (catalyst box: CatCart (registered trademark) (ThalesNano company) type Raney nickel, hydrogen pressure: 60bar, reaction temperature: 60 ℃, flow rate : 1mL / s, solution concentration: 0.05M). The resulting mixture was concentrated under reduced pressure, and the resulting residue was washed with a mixed solvent of hexane:ethyl acetate=2:1 to obtain 3-(2-acetamidoethyl)-5-methoxyl in the form of a white solid - 1H-Indole-2-carboxylic acid ethyl ester (450 mg).
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