Diisopropylethylamine → 3-((1S,3R,4S)-3-ethyl-4-(6-tosyl-6H-pyrrolo[2,3-e][1,2,4]triazolo[4,3-a]pyrazin-1-yl)cyclopentylamino)-4-(3,3,3-trifluoropropylamino)cyclobut-3-ene-1,2-dione

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-((1S,3R,4S)-3-ethyl-4-(6-tosyl-6H-pyrrolo[2,3-e][1,2,4]triazolo[4,3-a]pyrazin-1-yl)cyclopentylamino)-4-methoxycyclobut-3-ene-1,2-dione (0.090 g, 0.17 mmol, Preparation #29), 3,3,3-trifluoropropan-1-amine hydrochloride (0.050 g, 0.337 mmol, Fluorochem Limited), DIEA (0.18 mL, 1.0 mmol) and MeOH (1.2 mL) was heated at about 50° C. After about 18 h, the reaction was cooled to rt. The solid was collected via vacuum filtration, while washing with MeOH (about 3-5 mL), and then dried in a vacuum oven at about 60° C. to give 3-((1S,3R,4S)-3-ethyl-4-(6-tosyl-6H-pyrrolo[2,3-e][1,2,4]triazolo[4,3-a]pyrazin-1-yl)cyclopentylamino)-4-(3,3,3-trifluoropropylamino)cyclobut-3-ene-1,2-dione (0.083 g, 79%) as an off-white solid: LC/MS (Table 1, Method a) Rt=2.27 min; MS m/z: 616 (M+H)+.

Provenance & Evidence