6-Methoxy-2-oxo-1,2-dihydroquinoline-3,4-dicarbonitriles, A Red Compound Class with Solvent and pH Independent Green Fluorescence Maxima
作者:G. C. Enoua、G. Lahm、G. Uray、W. Stadlbauer
DOI:10.1002/jhet.1758
日期:2014.3
The sodium p‐toluenesulfinate mediated reaction of potassium cyanide with 4‐chlorocarbostyrils 8, 16, 18, and 23 gave in all cases the highly fluorescent and stable 6‐methoxy‐2‐oxoquinoline‐3,4‐dicarbonitrile 9 (λexc 460 nm and λem 545 nm). This is remarkable, because starting carbostyrils 8, 16, 18, and 23 had a chloro substituent, a nitro substituent, an acetylamino substituent, or a piperidinyl
钠p氰化钾与4- chlorocarbostyrils -toluenesulfinate介导的反应8,16,18,和23在所有情况下,高度荧光和稳定6-甲氧基-2-氧代喹啉-3,4-二甲腈,得到9(λ EXC 460nm处和λem 545 nm)。这是显着的,因为开始的喹诺酮类8,16,18和23在第3位有一个氯取代基,一个硝基取代基,一个乙酰氨基取代基或一个哌啶基取代基。因此,我们不仅观察到氰基亲核试剂取代了4-氯取代基和预期的3-氯取代基,而且还交换了a硝基取代基,乙酰取代基,并且在位置3的取代基导致的多步插入一个哌啶基的取代基8,16,18,和23,从4-羟基-6- methoxyquinolone开始4,容易从得到的p -anisidine和丙二酸。位置3的取代产生4-羟基-3-硝基和3-氯中间体,这些中间体被转化为3,4-二氯卡巴斯蒂尔8和4-氯-3-硝基羰基乙腈16。3-硝基