Diisopropylethylamine → 2-chloro-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-1-methyl-5-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-chloro-1-methyl-5-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylic acid (0.116 g, 0.48 mmol), 2-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dione (0.186 g, 0.48 mmol)[prepared according to Preparation 5] and N,N-diisopropylethylamine (0.42 ml, 2.42 mmol) in dichloromethane (2.49 ml) at 25° C. was added bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (0.25 g, 0.53 mmol) in one portion. The solution stirred at 25° C. for 1 h and was then dry loaded onto silica and purified via column chromatography (silica, 30-70% EtOAc in hexanes) yielding 2-chloro-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-1-methyl-5-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxamide (250 mg, 0.38 mmol, 78% yield) as a clear oil: LCMS (ES) m/e 570, 572 (M, M+2)+.

Provenance & Evidence