The present invention relates to a method of industrially advantageous production of a pyrazine compound. The present invention is a method of producing compound (b) by subjecting compound (a) to an intramolecular ring closing reaction under basic conditions. (wherein each symbol is as described in the DESCRIPTION.)
本发明涉及一种工业上有利的
吡嗪化合物生产方法。本发明是通过在碱性条件下使化合物(a)经历分子内环闭合反应来生产化合物(b)的方法。(其中每个符号如描述中所述。)