2-(3-(methylamino)propyl)-1H-benzimidazole → rac-(1R*,8R*,9R*)-9-(2-{[3-(1H-Benzoimidazol-2-yl)-propyl]-methyl-amino}-ethyl)-tricyclo[6.2.2.02,7]dodeca-2,4,6-trien-9-ol

Participants

Reaction Conditions

Reaction Steps

A mixture of 1000 mg of rac-toluene-4-sulfonic acid (1R*,8R*,9R*)-2-(9-hydroxy-tricyclo[6.2.2.02,7]dodeca-2,4,6-trien-9-yl)ethyl ester and 508 mg of [3-(1H-benzoimidazol-2-yl)-propyl]-methyl-amine in 2 mL of DIPEA was heated to 110° C. for 30 min. The reaction mixture was cooled to rt, quenched with MeOH-water and extracted with EtOAc. The organic phase was separated, dried over Na2SO4 and concentrated in vacuo to obtain 1.0 g as beige solid. A part of the crude product was purified by CC with EtOAc/MeOH (2:1) to obtain the desired compound as beige foam.

Provenance & Evidence