Dichloromethane → 5-(2-Ethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one

Participants

Reaction Steps

A stirred solution of ethyl-{2-[2-(6-fluoro-2-oxo-indan-1-ylidenemethyl)-3-methyl-4-oxo-1,4,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-5-yl]-ethyl}-carbamic acid tert-butyl ester (1.2 g, 2.5 mmol) obtained from Example 116 in dichloromethane (25 ml) was added dropwise slowly with 2.5 ml of trifluoroacetic acid. Upon the completion of the addition, the mixture was stirred for 2 hours at room temperature. The mixture was concentrated under reduced pressure to give 5-(2-ethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol-3-ylidenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridin-4-one (0.94 g, 98%) as a yellow solid.

Provenance & Evidence