Dimethylformamide → HCID 86613953, compound

Participants

Reaction Steps

To 5-(8-methoxy-1-piperidin-4-ylmethyl-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethyl)thiazolidine-2,4-dione (20 μmol, 1.0 eq.) was added a DMF (200 μl) solution of 2-methylbenzaldehyde (24 μmol, 1.2 eq) and acetic acid (10 μl). Si-sodium cyanoborohydride was added further thereto. The solution was shaken for several minutes, diisopropylethylamine (30 μl) was added, and a reaction was carried out at room temperature overnight. The resin was removed by filtration and washed with dichloromethane. The solvent was distilled off from the filtrate in a nitrogen gas stream, and the residue was purified by HPLC (UV-trigger, column: CAPCELL PAK C18, UG 120 S-5, 20 mm×50 mm, 0.05% trifluoroacetic acid-H2O, 0.05% trifluoroacetic acid-CH3CN). The structure was confirmed by LC-MS, and freeze-drying was conducted, giving 5-{8-methoxy-1-[1-(2-methylbenzyl)piperidin-4-yl]methyl-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethyl}thiazolidine-2,4-dione in 50.5% yield.

Provenance & Evidence