The invention relates to a new process for the preparation of pyrazine derivatives of formula (I), which are useful as intermediates for the preparation of liquid crystalline media components or of pharmaceutically active substances.
这项发明涉及一种制备式(I)的
吡嗪衍
生物的新工艺,该衍
生物可用作制备液晶介质组分或制备药物活性物质的中间体。