3-bromo-2,2-dimethylpropan-1-amine;hydrobromide

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (R)-5-(2-(5-fluoro-2-methoxypyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (Preparation B; 150 mg, 0.420 mmol), EDCI (88.5 mg, 0.462 mmol), and HOBT-H2O (70.7 mg, 0.462 mmol) in DMF (10 mL) was added 3-bromo-2,2-dimethylpropan-1-amine hydrobromide (124 mg, 0.504 mmol) followed by triethylamine (55.2 mg, 0.546 mmol). The reaction was stirred for 18 hours. The solvent was removed under reduced pressure and the residue was purified by silica column chromatography, eluting with 50% EtOAc/Hexanes to provide (R)-N-(3-bromo-2,2-dimethylpropyl)-5-(2-(5-fluoro-2-methoxypyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxamide (180 mg), to which was added HCl (5 mL, 4M in dioxane). The reaction was sealed and heated to 90° C. for 2 hours. The solvent was removed under reduced pressure and the residue was purified by silica column chromatography, eluting with 20% Hexanes/EtOAc to provide the desired product (130 mg, 63% yield). The solvent was removed under reduced pressure the residue was purified by silica column chromatography eluting with 50% EtOAc/Hexanes