PREPARATION METHODS OF 6-SUBSTITUTED AMINO-3-CYANOQUINOLINE COMPOUNDS AND THE INTERMEDIATES THEREOF
申请人:Mao Yongjun
公开号:US20110263860A1
公开(公告)日:2011-10-27
The present invention relates to a method for preparing 6-substituted amino-3-cyanoquinoline compounds (compound A for short) and the intermediates thereof, more particularly, to a compound of the following formula (I), the preparation method thereof, the intermediates thereof and use thereof for preparing the compound A. The compound of the formula (I) is cyclized in the presence of an alkali to give a compound of formula A, wherein W is OH; or the compound of the formula (I) is cyclized in the presence of an alkali, and then chlorinated to give a compound of the formula A, wherein W is Cl. Compared with the known methods in the literature, the method for preparing the compound A from the compound of formula (I) according to the present invention can avoid using high-temperature condition and high boiling point solvents, and is safe and environment-friendly, mild in reaction condition, easy in operation with a high yield and high product purity.
本发明涉及一种制备6-取代氨基-3-氰基喹啉化合物(简称为化合物A)及其中间体的方法,更具体地,涉及以下式(I)的化合物,其制备方法,中间体及其用于制备化合物A的用途。在碱的存在下,式(I)的化合物经环化反应得到式A的化合物,其中W为OH;或者在碱的存在下,式(I)的化合物经环化反应,然后氯化得到式A的化合物,其中W为Cl。与文献中已知的方法相比,根据本发明从式(I)的化合物制备化合物A的方法可以避免使用高温条件和高沸点溶剂,安全环保,反应条件温和,操作简便,产率高,产品纯度高。