Diisopropylethylamine → 1-(4-benzoylpiperazin-1-yl)-2-[7-(4-methoxyphenyl)-1H-pyrrolo[3,2-b]pyridin-3-yl]ethane-1,2-dione

Participants

Reaction Steps

The procedure for the preparation of Examples 65-67 is the same as that described previously for the preparation of Precursor 5a and is as follows: Potassium 7-(4-methoxyphenyl)-4-azaindole-3-glyoxylate, Precursor 4c (147 mg, 0.44 mmol), an appropriate 1-benzoylpiperazine derivative (0.44 mmol), 3-(diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one (DEPBT) (101 mg, 0.44 mol) and Hunig's Base (0.5 mL) were combined in 5 mL of DMF. The mixture was stirred at rt for 8 h. DMF was removed via evaporation at reduced pressure and the residue was purified using a Shimadzu automated preparative HPLC System to give the corresponding 1-benzoyl-4-[(7-(4-methoxyphenyl)-4-azaindol-3-yl)-oxoacetyl]-piperazine derivative.

Provenance & Evidence