Diisopropylethylamine → 4-(1,4-dimethyl-1H-pyrazol-5-yl)-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-methyl-2-furancarboxamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-(1,4-dimethyl-1H-pyrazol-5-yl)-5-methyl-2-furancarboxylic acid (53 mg, 0.24 mmol), 2-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dione (93 mg, 0.24 mmol)[prepared according to Preparation 6] and N,N-diisopropylethylamine (0.21 ml, 1.20 mmol) in dichloromethane (2.4 ml) at 25° C. was added bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (124 mg, 0.26 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 4-(1,4-dimethyl-1H-pyrazol-5-yl)-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-methyl-2-furancarboxamide (113 mg, 0.21 mmol, 85% yield) as a white foam: LCMS (ES) m/e 551 (M+H)+.

Provenance & Evidence