Potassium Carbonate → 7-Chloro-5-methyl-2-(2-(1-methyl-1H-benzo[D]imidazol-2-YL)ethyl)-2,3-dihydro-1H-pyrrolo[3,4-C]pyridine-1,6(5H)-dione

Participants

Reaction Conditions

Reaction Steps

K2CO3 (8.35 g, 60.4 mmol) was added rapidly to a suspension of 2-(1-methyl-1H-benzo[d]imidazol-2-yl)ethanamine dihydrochloride (5 g, 20.15 mmol) in MeOH (50 ml) and the reaction was stirred for about 5 h. The mixture was filtered and the filtrate was concentrated. The residue and TEA (28.1 ml, 201 mmol) were added to a solution of 1-methyl-2-oxo-1,2-dihydro-3-chloro-4-methoxycarbonyl-5-chloromethyl-pyridine (5.04 g, 20.15 mmol, see compound (6) of Example b1)) in MeCN (100 ml). The mixture was heated at about 90° C. overnight. The reaction was cooled to r.t. and the mixture was filtered through a sintered glass funnel. The solid was washed with water and dried to afford the title compound (3.9 g, 10.93 mmol, 54.2% yield).

Provenance & Evidence