1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 4-Cyano-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carboxylic acid [4-(4-methyl-piperazin-1-yl)-2-piperidin-1-yl-phenyl]-amide

Participants

Reaction Steps

A flask was charged with 4-cyano-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carboxylate potassium salt (0.043 g, 0.14 mmol) (as prepared in Example 3, step (d)), 4-(4-methyl-piperazin-1-yl)-2-piperidin-1-yl-phenylamine (0.028 g, 0.10 mmol) (as prepared in Example 5, step (b)), EDCI (0.030 g, 0.16 mmol), DMAP (0.012 g, 0.010 mmol), and DMF (0.5 mL) and was stirred for 12 h at RT and then 1 h at 60° C. The reaction mixture was loaded on a 10-g SPE cartridge (silica) and eluted with 10% MeOH/DCM to give 0.030 g (57%) of title compound. Mass spectrum (ESI, m/z): Calcd. for C27H41N7O2Si, 524.3 (M+H), found 524.1.

Provenance & Evidence