In the related "amide route" starting from 2-chloroisonicotinic acid, 41 ,a secondary amide directing group was used to facilitate the ortho lithiation of the pyridine 3-position.
在有关"酰胺三号"
2-氯酸、41、次要酰胺导演
锂方便邻吡啶3-立场.
In the related "amide route" starting from 2-chloroisonicotinic acid, 41 ,a secondary amide directing group was used to facilitate the ortho lithiation of the pyridine 3-position.
在有关"酰胺三号"2-氯酸、41、次要酰胺导演锂方便邻吡啶3-立场.
明：以上例句、词性分
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