(4S,6S)-4-(2-fluoro-5-iodo-4-methylphenyl)-4-methyl-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine 、
2-((2-trimethylsilyl)acetylenyl)-5-cyanopyridine 以to give 6-((5-((4S,6S)-2-amino-4-methyl-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-4-yl)-4-fluoro-2-methylphenyl)ethynyl)nicotinonitrile as off-white solid的产率得到6-((5-((4S,6S)-2-amino-4-methyl-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-4-yl)-4-fluoro-2-methylphenyl)ethynyl)nicotinonitrile