(S)-[4-(3-bromo-4-fluoro-phenyl)-4-methyl-5,6-dihydro-4H-[1,3]thiazin-2-yl]-carbamic acid tert-butyl ester 、
2-(三正丁基锡)吡嗪 在
四(三苯基膦)钯 silica gel 、
正己烷 、
ethyl acetate n-hexane 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.67h,
以to give the title compound (14% yield, 90% purity as determined by LCMS)的产率得到(S)-tert-butyl 4-(4-fluoro-3-(pyrazin-2-yl)phenyl)-4-methyl-5,6-dihydro-4H-1,3-thiazin-2-ylcarbamate