Laticyclische 1,5-konjugation in azoverbindungen mit parallel benachbarten dreiringeinheiten
作者:Siegfried Hünig、Schmitt Michael
DOI:10.1016/s0040-4039(00)96553-5
日期:1987.1
[2+2]-photocycloadditions between (hetero) threemembered rings and azo groups have been performed with systems 3, 5 and 7 which are transformed into cage compounds 4, 6 and 8. By competing reactions under different conditions photoreduction of the azo group in 5a or 7 induces a new type of transannular reaction yielding 9 and 10.
(杂)三元环与偶氮基团之间的第一个[2 + 2]-光环加成反应已通过系统3、5和7进行,该系统已转化为笼状化合物4、6和8。通过在不同条件下竞争反应,5a或7中偶氮基的光还原诱导了一种新型的跨环反应,产生9和10。