Triethylamine → HCID 71543069, compound

Participants

Reaction Steps

To a solution of (S)-3-cyclopropyl-1-fluoro-5′,6′-dihydrospiro[chromeno[2,3-c]pyridine-5,4′-[1,3]oxazine]-2′,7-diamine (0.0864 g, 0.254 mmol) and 5-chloro-2-pyridinecarboxylic acid (0.044 g, 0.279 mmol) in EtOAc (2 mL) was added triethylamine (0.106 ml, 0.762 mmol). The mixture was stirred for one minute and propylphosphonic anhydride solution, 50 wt. % in ethyl acetate (0.302 ml, 0.508 mmol) was added. Stirring continued for 1 h. The reaction was quenched with saturated NaHCO3 and extracted with EtOAc. The combined organics were dried over Na2SO4, filtered, concentrated and chromatographed on silica gel using 0-5% MeOH/DCM and repurified by HPLC to afford (S)—N-(2′-amino-3-cyclopropyl-1-fluoro-5′,6′-dihydrospiro[chromeno[2,3-c]pyridine-5,4′-[1,3]oxazin]-7-yl)-5-chloropicolinamide as a white solid (0.015 g, 0.031 mmol, 12.31% yield). MS m/z=480.0 [M+H]+.

Provenance & Evidence