A Convenient Selective N-Alkylation of 4-Oxo-1,4-dihydro-2-quinoline Carboxylic Acid
作者:Dolorès Edmont、Jacques Chenault
DOI:10.1055/s-2001-14588
日期:——
The selective N-alkylation of 4-oxo-1,4-dihydro-2-quinoline carboxylic acid has been achieved from 1,2-dihydro[1,4]oxazino[4,3-a]quinoline-4,6-dione by the 2-morpholinone ring opening. In the same time, we have developed a new methodology to obtain the 1,2-dihydro[1,4]oxazino[4,3-a]quinoline-4,6-dione that involves an intramolecular cyclization of the 2-chloroethyl 6-fluoro-4-oxo, 1,4-dihydro-2-quinoline carboxylate.
通过 2-吗啉酮开环,我们从 1,2-二氢[1,4]恶嗪并[4,3-a]喹啉-4,6-二酮中获得了 4-氧代-1,4-二氢-2-喹啉羧酸的选择性 N-烷基化。同时,我们还开发了一种获得 1,2-二氢[1,4]恶嗪并[4,3-a]喹啉-4,6-二酮的新方法,该方法涉及 2-Cloroethyl 6-fluoro-4-oxo, 1,4-dihydro-2-quinoline carboxylate 的分子内环化。