As for this invention formula I:< Conversion 7 >So being manufacturing method of the chemical compound which is shown, formula III:< Conversion 8 >So it reacts with chemical compound and chloridation okisariru which are shown, in water phase, in hot state it processes the product which is obtained with hydrazine, and the hydroxide alkaline metal it makes 3 phase system after the processing ending including ether, it relates to the manufacturing method which features that the chemical compound of formula I am obtained the center as an acidity. This invention furthermore regards the multiform phase of the chemical compound which is shown with formula I.本発明は式I:【化7】で示される化合物の製造法であって、式III:【化8】で示される化合物と塩化オキサリルとを反応させ、得られる生成物を水相中、高温状態でヒドラジンおよび水酸化アルカリ金属で処理し、処理終了後にエーテルを加えて3相系とし、その中間層を酸性として式Iの化合物を得ることを特徴とする製造法に関わる。本発明はさらに式Iで示される化合物の多形相に関する。
