Abnormal reactions of 2-methoxy-4,9-dimethyl-1-nitroacridine with selenous acid and selenium(IV) oxide. Synthesis of 1H-selenopheno[2,3,4-k,l]acridine-1-one: A new seleno-containing ring system
作者:Oleg S. Radchenko、Elena N. Sigida、Nadezhda N. Balaneva、Pavel S. Dmitrenok、Vyacheslav L. Novikov
DOI:10.1002/jhet.512
日期:2011.1
reaction was revealed on the oxidation of functionally substituted acridine containing the activated methyl groups by well‐known oxidants, such as selenous acid and selenium(IV) oxide. Treatment of 2‐methoxy‐4,9‐dimethyl‐1‐nitroacridine (5) with an excess of H2SeO3 in boiling ethanol gave a mixture of the normal reaction products, 2‐methoxy‐4‐methyl‐1‐nitro‐9‐formylacridine (11) (isolated yield 29%) and
该反应的异常过程是通过众所周知的氧化剂(例如亚硒酸和氧化硒(IV))氧化含有被激活的甲基的功能性取代a啶而发现的。在沸腾的乙醇中用过量的H 2 SeO 3处理2-甲氧基-4,9-二甲基-1-硝基ac啶(5)得到正常反应产物2-甲氧基-4-甲基-1-硝基硝基的混合物9-甲酰内酰胺(11)(分离产率29%)和2-甲氧基-4-甲基-1-硝基ac啶-9-羧酸(12)(36%)以及异常产物3-甲氧基-5-甲基‐1 H ‐硒代苯[2,3,4‐ k,l ] ac啶-1-一(13)(21%),这是新的含硒环系统的第一个例子。使用SeO 2时,硒酸内酯13的产率要低得多。J.杂环化学.2011。