1-Hydroxybenzotriazole → 5-[5-(2,6-Dichloro-phenylmethanesulfonyl)-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid Methyl-(1-methyl-piperidin-4-yl)-amide

Participants

Reaction Steps

To a mixture of 5-[5-(2,6-Dichloro-phenylmethanesulfonyl)-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (100 mg, 0.2 mmol), HOBt (33 mg, 1.2 eq.), EDAC.HCl (45 mg, 1.2 eq.) and methyl-(1-methyl-piperidin-4-yl)-amine (284 mg, 1.1 eq.) in DMF (2 mL) was added TEA (0.069 mL, 2.5 eq.). After stirring at rt for 2 days, the reaction was concentrated, diluted with DCM and added solid sodium bicarbonate. After stirring at rt for 15 mins, the suspension was loaded onto a silica gel column to give the titled compound as an orange solid.

Provenance & Evidence