Toluene → HCID 86732128, compound

Participants

Reaction Steps

N-(3-((4S,6S)-2-amino-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-4-yl)-4-fluorophenyl)-5-bromopicolinamide (Example 52) was transferred to a microwave vial followed by the addition of diethylamine (0.580 ml, 5.55 mmol), tetrakis(triphenylphosphine)palladium (0.053 g, 0.046 mmol), copper(I) iodide (0.021 g, 0.111 mmol), cyclopropylacetylene, 70 wt. % solution in toluene (0.179 ml, 1.480 mmol) and DMF (1.5 mL). The vial was sealed, purged with N2 and heated in microwaved at 90° C. for 45 min. The reaction went to completion, diluted in water (10 mL) and extracted with EtOAc. The combined organics were dried over Na2SO4, filtered, concentrated and chromatographed on silica gel using 0-3% MeOH/DCM and 0-50% EtOAc/hexanes to afford a light yellow solid as N-(3-((4S,6S)-2-amino-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-4-yl)-4-fluorophenyl)-5-(cyclopropylethynyl)picolinamide. MS m/z=479 [M+H]+. Calculated for C23H19F5N4O2: 478.14

Provenance & Evidence