1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → 5-[5-[3-Chloro-4-(1-methylethoxy)phenyl]-1,2,4-oxadiazol-3-yl]-1(2H)-isoquinolinone

Participants

Reaction Conditions

Reaction Steps

1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDCI; 5.2 g) and hydroxybenzotriazole (HOBt; 3.6 g) were added to a solution of 3-chloro-4-[(1-methylethyl)oxy]benzoic acid (D3; 2.9 g) in DMF (200 ml) at room temperature, and the resulting solution was stirred for 30 minutes. N-hydroxy-1-oxo-1,2-dihydro-5-isoquinolinecarboximidamide (D37, 2.75 g) was added and the suspension was stirred at room temperature for 2 hours. The reaction mixture was heated to 140° C. and stirred for 1 hour. The solvent was evaporated and the residue was washed with water, followed by ethyl acetate to give the title compound (2.6 g).

Provenance & Evidence