Benzocyclobutenes. Part 6. Reactions of substituted benzocyclobutene-1,2-diones with o-phenylenediamine
作者:Omar Abou-Teim、Nigel P. Hacker、Robert B. Jansen、John F. W. McOmie、David H. Perry
DOI:10.1039/p19810000988
日期:——
of benzocyclobutene-1,2-dione with o-phenylenediamine gave the corresponding 5,10-diazabenzo[b]biphenylenes, (13)–(16) whereas the similar condensation of the 4-methoxy-(6), 4,5-dimethoxy-(7), and 4,5-dibromo-(8) derivatives, also cyclobuta(l)phenanthrene-1,2-dione, unexpectedly gave derivatives of dibenzo[b,f][1,4]-diazocine-6,11(5H,12H)-dione (20)–(23). Treatment of the 4-hydroxy-dione (3) with 1
苯并环丁烯-1,2-二酮的4-羟基-(3),4,5-二氯-(4),3,6-二甲氧基-(5)和4,5-苯并-(9)衍生物的缩合用邻苯二胺制得相应的5,10-二氮杂苯并[ b ]联苯撑,(13)-(16),而4-甲氧基-(6),4,5-二甲氧基-(7)和4的类似缩合反应,5-二溴-(8)衍生物,还有环丁(l)菲-1,2-二酮,出乎意料地得到了二苯并[ b,f ] [1,4]-重氮-6,11(5 H,12 H)-二酮(20)-(23)。用1.4当量的邻位化合物处理4-羟基二酮(3)-苯二胺制得1,2-双-(2-氨基苯基亚氨基)苯并环丁烯-4-醇(18),在二酸酐存在下将菲二酮与二胺缩合,制得二苯并[ a,c ]异吲哚并[2,1- a ] -苯并咪唑-15-一(25)。