Sodium Sulfate → 1-{1-[2-(1-Acetyl-6-methoxy-1,2,3,4-tetrahydroquinolin-7-yl)ethyl]piperidin-4-yl}-1H-indole-6-carboxamide

Participants

Reaction Steps

172 mg of 3-amino-4-(2,2-dimethoxyethyl)benzamide and 127 mg of 1-(2-(1-acetyl-6-methoxy-1,2,3,4-tetrahydroquinolin-7-yl)ethyl)piperidin-4-one were dissolved in 5 ml of acetic acid. Thereafter, 0.65 g of sodium sulfate was added to the reaction solution, and the obtained mixture was then stirred at room temperature for 1 hour. Thereafter, 0.16 g of sodium triacetoxyborohydride was added to the reaction solution, and the obtained mixture was then stirred for 1 hour. Thereafter, 5 ml of water was added thereto, and the obtained mixture was then stirred at 100° C. for 2 hours. The reaction solution was cooled to a room temperature, and it was then concentrated under a reduced pressure. A saturated sodium bicarbonate aqueous solution was added to the residue, followed by extraction with chloroform. The extract was dried over magnesium sulfate and then concentrated under a reduced pressure. The residue was purified by silica gel column chromatography (chloroform-methanol) and NH silica gel column chromatography (ethyl acetate-methanol), so as to obtain 146 mg of the subject compound.

Provenance & Evidence