The invention relates to a novel process for preparing Spiro derivatives, in particular 7-methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1,7-diazaspiro[4.4]nonan-6-one, and to novel intermediates for use in said process along with processes for preparing said intermediates.
这项发明涉及一种制备螺环衍
生物的新工艺,特别是7-甲基-2-[4-甲基-6-[4-(三
氟甲基)苯基]
嘧啶-2-基]-
1,7-二氮杂螺[4.4]壬烷-6-酮,以及用于该工艺的新中间体,以及制备该中间体的工艺。