Novel β-lactam condensed 3-thiaquinolines: an efficient synthesis and structural characterization
作者:Péter Csomós、Lajos Fodor、Gábor Bernáth、Jari Sinkkonen、Jari Salminen、Kirsti Wiinamäki、Kalevi Pihlaja
DOI:10.1016/j.tet.2007.09.079
日期:2008.2
Quinoline analog 2-aryl-4H-3,1-benzothiazine derivatives 8–13, obtained by the condensation of o-aminobenzyl chloride 1 with substituted thiobenzamides 2–7, were transformed to azeto[2,1-a][3,1]benzothiazin-1-one derivatives 18–23a,b,c and 24d,e by reaction with the corresponding substituted acetyl chlorides 14–17 in the presence of triethylamine. The structures of the new molecules were determined
喹啉模拟2-芳基-4- ħ -3,1-苯并噻嗪衍生物8 - 13,通过缩合得到ø -氨基苄基氯1与取代thiobenzamides 2 - 7,转化到azeto [2,1-一个] [3, 1]苯并噻嗪-1-酮衍生物18 – 23a,b,c和24d,e与相应的取代乙酰氯14 – 17反应在三乙胺存在下。通过NMR光谱和电子电离(EI)质谱法确定新分子的结构。典型EI +质谱的碎裂8 - 13和18 - 23A,b,c ^和24D,ê进行了详细讨论。