The synthesis of novel polycyclic heterocyclic ring systems<i>via</i>photocyclization.<b>19</b>. Thieno[3′,2′:4,5]thieno[2,3-<i>c</i>]-naphtho[1,2-<i>f</i>]quinoline, thieno[3′,2′:4,5]thieno[2,3-<i>c</i>]naphtho-[1,2-<i>f</i>][1,2,4]triazolo[4,3-<i>a</i>]quinoline and thieno[3′,2′:4,5]-thieno[2,3-c]naphtho[1,2-<i>f</i>]tetrazolo[1,5-<i>a</i>]quinoline
作者:Jiann-Kuan Luo、Ronald F. Federspiel、Raymond N. Castle
DOI:10.1002/jhet.5570340535
日期:1997.9
Photocyclization of 3-chloro-N-(3-phenanthryl)thieno[2,3-b]thiophene-2-carboxamide (5) yielded only one of the two possible structural isomers, thieno[3′,2′:4,5]thieno[2,3-c]naphtho[1,2-f]quinolin-6(5H)-one (6), which was further elaborated to afford the unsubstituted ring system 10, its triazole 11 and tetrazole 12. The structural confirmation of 10 was achieved by the total assignment of its 1H and
3-氯-N-(3-菲基)噻吩并[2,3 - b ]噻吩-2-羧酰胺(5)的光环化仅产生两种可能的结构异构体之一,即噻吩并[3',2':4,5 ] thieno [2,3- c ]萘[1,2 - f ]喹啉-6(5 H)-one(6)进一步精制,得到未取代的环系统10,其三唑11和四唑12。10的结构确认是通过共同利用二维nmr光谱法对1 H和13 C nmr光谱进行总分配而实现的。