Triethylamine → HCID 86613660, compound

Participants

Reaction Steps

743.4 mg of acetic acid (2RS,4aRS,10bRS)-8,9-dimethoxy-6-{4-[1-(2-methyl-isothioureido)-methanoyl]-phenyl}-1,2,3,4,4a,10b-hexahydro-phenanthridin-2-yl ester (compound A1), 384.5 mg of 1-acetylpiperzine and 0.416 ml of triethylamine are stirred in 10 ml of 1,4-dioxane at 90° C. for 5 days. After 2 days another 384.5 mg of 1-acetylpiperazine are added to the reaction mixture. The solvent is removed and the residue three times coevaporated with dichloromethane, than one time with toluene. After redissolving in 25 ml of dichloromethane the solution is extracted with water and aqueous saturated KHCO3 solution successively and the aqueous KHCO3 phase reextracted with dichloromethane. After drying the combined organic layers with sodium sulfate the solvent is removed and the residue purified by chromatography on silica to yield 530 mg of the title compound.

Provenance & Evidence