Reacción #218176

Ecuación de reacción

NaBH4

5-(2-fluoro-4-formylphenoxy)pyrazine-2-carboxamide

amylamine

→

title compound

Rendimiento 66.0%

5-(2-Fluoro-4-pentylaminomethylphenoxy)pyrazine-2-carboxamide

Rendimiento 66.0%

Disolventes

methanol

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroDry the column in a vacuum oven at room temperature
2. 2
   OtroPurify
3. 3
   Lavadoby eluting through a 40 g ISCO® column 0% to 15% (2.0 M NH3 in methanol) in 80% (ethyl acetate in hexanes)

Procedimiento

Place 5-(2-fluoro-4-formylphenoxy)pyrazine-2-carboxamide (Example 737, Part E) (0.400 g, 1.53 mmol), amylamine (0.147 g, 1.68 mmol) and 3 {acute over (Å)} molecular sieves in a vial. Add methanol (7.7 mL), cap and stir overnight. Add NaBH4 (0.058 g, 1.53 mmol) and stir until the gasses stop evolving. Load the reaction mixture directly onto a 25 g ISCO® pre-load column. Dry the column in a vacuum oven at room temperature. Purify by eluting through a 40 g ISCO® column 0% to 15% (2.0 M NH3 in methanol) in 80% (ethyl acetate in hexanes) to give the title compound (0.334 g, 66%): TOF MS ES+ 333.2 (M+H)+, HRMS calcd for C17H22N4O2F 333.1727 (M+H)+, found 333.1722, time 0.53 min; HPLC [YMC-Pro pack C-18 (150×4.6 mm, S-5 microm), 0.05% TFA/acetonitrile in 0.05% TFA/water at 1.0 mL/min, 10-20% over 5 min, 20-95% over 18], tR=10.3 min, 96.8% purity.

Fuente