Phthalamide → 4-(4-(aminomethyl)-4-fluoropiperidin-1-yl)-N-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-6-yl)furo[3,2-d]pyrimidin-2-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-((4-fluoro-1-(2-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-6-ylamino)furo[3,2-d]pyrimidin-4-yl)piperidin-4-yl)methyl)isoindoline-1,3-dione (0.510 g, 0.795 mmol, prepared using W from Preparation #X.1, V, U with phthalamide, G, A with 2,4-dichlorofuro[3,2-d]pyrimidine [ArkPharm] and B with 1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-6-amine [WO 2010/027500 Intermediate 21, Step C]) in MeOH (20 mL) was treated with hydrazine hydrate (0.190 mL, 2.50 mmol). The mixture was heated at about 70° C. for about 3 h. The mixture was cooled to rt and concentrated in vacuo. The residue was dissolved in DCM/MeOH (10:1) (30 mL) and stirred for about 30 min. The resulting suspension was filtered and the filtrate was concentrated in vacuo to give 4-(4-(aminomethyl)-4-fluoropiperidin-1-yl)-N-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-6-yl)furo[3,2-d]pyrimidin-2-amine (0.41 g, 100%). LC/MS (Table 2, Method i) Rt=1.60 min; MS m/z 512 (M+H)+.

Provenance & Evidence