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

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-(3-chloro-4-ethyl-1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxylic acid (120 mg, 0.44 mmol), 2-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dione (171 mg, 0.44 mmol) [prepared according to Preparation 6] and n,n-diisopropylethylamine (0.39 ml, 2.22 mmol) in Dichloromethane (4.6 ml) at 25° C. was added bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (228 mg, 0.49 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-(3-chloro-4-ethyl-1-methyl-1H-pyrazol-5-yl)-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-2-thiophenecarboxamide (190 mg, 0.30 mmol, 68° A yield) as a white solid: LCMS (ES) m/e 601, 603 (M, M+2)+.

Provenance & Evidence