作者:Stanislav Radl、Ka-Kong Chan
DOI:10.1002/jhet.5570310232
日期:1994.3
synthetic method for preparing 1-substituted 3-nitroquinolin-4(1H)-ones from corresponding 2-fluoro-α-nitroacetophenones is demonstrated by the synthesis of 6,7-difluoro derivatives 7a-c. The method involves sequential treatment of the starting nitroacetophenone with triethyl orthoformate and the appropriate amine, followed by a nucleophilic cyclization reaction under mild conditions. The C-7 fluorine atom
通过合成6,7-二氟衍生物7a-c证明了一种由相应的2-氟-α-硝基苯乙酮制备1-取代的3-硝基喹啉-4(1 H)-酮的通用合成方法。该方法包括先用原甲酸三乙酯和适当的胺顺序处理起始硝基乙酰苯,然后在温和条件下进行亲核环化反应。的C-7氟原子7可以通过环状胺置换。以这种方式制备了取代的6-氟-7-(4-甲基-1-哌嗪基)-3-硝基喹啉-4(1H)-酮8a-c。