stereoselectively in high yields. Loading 1 mol % of the catalyst was enough to obtain high yields of the products in convenient reaction time in many cases. The reaction likely proceeds through stepwise [2 + 2] cycloaddition via a triplet biradical intermediate.
在
铱光催化剂存在下,通过发射 455 nm 光的 LED 照射N -(ω-烯基)
异喹啉,以高产率立体选择性地得到相应的
环丁烷稠合苯并 [ b ]
喹啉衍
生物。在许多情况下,负载 1 mol% 的催化剂足以在方便的反应时间内获得高产率的产品。该反应可能通过三重双自由基中间体逐步进行 [2 + 2] 环加成。