The synthesis of novel polycyclic heterocyclic ring systems<i>via</i>photocyclization. 23 . Naphtho[2′,1′:4,5]thieno-[2,3-<i>c</i>]naphtho[2,1-<i>f</i>]quinoline
作者:Jiann-Kuan Luo、Maria-Paz Cabal、Ronald F. Federspiel、Raymond N. Castle
DOI:10.1002/jhet.5570380119
日期:2001.1
A previously unknown heterocyclic ring system, naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[2,1-f]quinoline (14), was synthesized via oxidative photocyclization of 3-chloro-N-(2-phenanthryl)naphtho[1,2-b]-thiophene-2-carboxamide (9). Further elaboration of the lactam 10 yielded the unsubstituted ring system 14. Structural confirmation of compound 14 was accomplished by a total assignment of its 1H and 13C
通过3-氯环戊基的氧化光环化反应合成了以前未知的杂环系统,萘并[2',1':4,5]噻吩并[2,3- c ]萘并[2,1- f ]喹啉(14)。N-(2-菲基)萘并[1,2 - b ]-噻吩-2-羧酰胺(9)。进一步加工内酰胺10得到未取代的环系统14。化合物14的结构确认是通过使用协同二维nmr光谱方法对1 H和13 C nmr光谱进行总分配来完成的。