Condensed Heterotricycles. Synthesis and Reactions ofb-Fused 1(2H)-Isoquinolinones with unusual enaminic properties
作者:Kuppuswamy Nagarajan、Vunnam R. Rao、Rashmi K. Shah、Sharada J. Shenoy、Hans Fritz、Wilhelm J. Richter、Dieter Muller
DOI:10.1002/hlca.19880710110
日期:1988.2.3
Homophthalic acid (1) undergoes reaction with 1,2-, 1,3-, and 1,4-diamines to give condensed 1(2H)-isoquinolinones like 2, 4, 13, and 25, which exhibit marked enamine character. These are attacked by electrophiles at the N or C terminus. Some notable reactions of imidazoisoquinolone 2 are those with maleic and acrylic acids to form the tetracycles 48 and 51, respectively. With propiolic acid, 5 underwent
高邻苯酸(1与1,2-,1,3-,和1,4-二胺)经历反应,得到稠合1(2 ħ)异喹啉酮等2,4,13,和25,其显示出标记烯胺字符。它们在N或C末端受到亲电试剂的攻击。咪唑并异喹诺酮2的一些值得注意的反应是与马来酸和丙烯酸的反应,分别形成四环48和51。与丙酸5进行了有趣的反应,形成苯并咪唑并萘啶53。从2引出了同样有趣的行为在其与甲醛的反应中,除了预期的亚甲基桥连分子59之外,新型螺环衍生物60是通过假定的氮杂二烯中间体63的二聚作用形成的。