申请人:Nippon Kayaku Kabushiki Kaisha
公开号:US04620003A1
公开(公告)日:1986-10-28
The present invention relates to a process for preparing a 2-quinoxalinol compound, in the free form, of the following formula (II); ##STR1## wherein R is hydrogen, halogen or a trifluoromethyl group, which comprises reducing a 2-quinoxalinol-4-oxide compound, in the free form, of the following formula (I); ##STR2## wherein R is a defined above, with hydrazine in the presence of a Raney catalyst and a hydroxide of an alkali metal or an alkaline earth metal or ammonium hydroxide.
本发明涉及一种制备2-喹啉醇类化合物的过程,其为以下式(II)的自由形式:##STR1## 其中R为氢、卤素或三氟甲基基团,包括在Raney催化剂和碱金属或碱土金属的氢氧化物或氨水存在下,用肼还原以下式(I)的自由形式的2-喹啉醇-4-氧化物化合物:##STR2## 其中R如上所述。