A process for preparing a compound of formula (I) or a salt thereof: (I) wherein R1 is H or optionally substituted aryl or heteroaryl; comprising reacting 2,3-dichloropyrazine with a suitable diaryl imine followed by hydrolysis.
一种制备式(I)化合物或其盐的方法:(I)其中R1为氢或可选择性取代的芳基或杂环基;包括将
2,3-二氯吡嗪与适当的二芳基
亚胺反应,然后进行
水解反应。