Indole β-nucleophilic substitution. Part 2. Formation of a [2]benzoxepino[4,3-b]indole and a pyrido[4′,3′:5,6]oxepino[3,2-b]indole
作者:Melanie M. Cooper、Geoffrey J. Hignett、John A. Joule
DOI:10.1039/p19810003008
日期:——
sequences involving the first examples of intramolecular nucleophilic substitution at an indole β-position, with departure of phenylsulphinate as leaving group from nitrogen. The spectroscopic and chemical evidence supporting the structures for these new heterocyclic systems, and thus by implication the operation of indole β-nucleophilic substitution, are detailed.
描述了[2]苯并xepino [4,3 - b ]吲哚-11(6 H,12 H)-one,(12a)和12-甲基吡啶并[4',3':3,4] oxepino [3 ,2 - b ]吲哚-5(6 H,12 H)-one,(5),通过涉及吲哚β-位的分子内亲核取代的第一个例子的序列,苯磺酸盐作为离去基团离开氮。光谱和化学证据支持了这些新杂环系统的结构,并因此暗示了吲哚β-亲核取代的操作。