作者:Meng-Yang Chang、Chung-Han Lin、Yeh-Long Chen、Ru-Ting Hsu、Ching-Yao Chang
DOI:10.1016/j.tetlet.2010.04.049
日期:2010.6
heterocycles by the repeated treatment of boron trifluoride etherate (BF3-OEt2) is reported. The overall transformation from ketones 1 to spiro-fused indenes 3 proceeds via Wittig olefination, deconjugation, Grignard addition, and intramolecular electrophilic cyclization in moderate yields. It presents a novel rearrangement reaction catalyzed by boron trifluoride etherate and broadens the scope of application
据报道,通过重复处理三氟化硼醚化物(BF 3 -OEt 2),可以容易而直接地合成螺茚基杂环。从酮1到螺环稠合的茚满3的总体转化过程是通过Wittig烯烃化,去共轭,格利雅(Grignard)加成和分子内亲电环化进行的,产率中等。它提出了一种新的由三氟化硼醚化物催化的重排反应,并拓宽了其应用范围。