An efficient synthesis of fused tricycles with a benzene core via intramolecular double ring-closing enyne metathesis
摘要:
A double enyne metathesis reaction has been developed for the efficient synthesis of tricyclic products with a benzene core in good yields. By this protocol, bisannulated benzenes with different ring sizes may he simultaneously constructed from the corresponding precursors in just 'one shot'. (c) 2006 Elsevier Ltd. All rights reserved.
An efficient synthesis of fused tricycles with a benzene core via intramolecular double ring-closing enyne metathesis
摘要:
A double enyne metathesis reaction has been developed for the efficient synthesis of tricyclic products with a benzene core in good yields. By this protocol, bisannulated benzenes with different ring sizes may he simultaneously constructed from the corresponding precursors in just 'one shot'. (c) 2006 Elsevier Ltd. All rights reserved.
Palladium-Catalyzed Double Annulations To Construct Multisubstituted Benzodifurans
作者:Zhiqiang Liang、Shengming Ma、Jihong Yu、Ruren Xu
DOI:10.1021/jo7016263
日期:2007.11.1
Efficient synthetic routes to construct multisubstituted benzo[1,2-b:5,4-b‘]difurans and benzo[1,2-b:4,5-b‘]difurans from bis(allyloxy)bis(alkynyl)benzenes or bis(alkynyl)dihydroxybenzenes and allylic halides utilizing palladium-catalyzed double annulations is reported. By further applying a double ring-closing metathesis reaction, pentacyclic compounds were also prepared.
有效的合成路线来构建多取代苯并[1,2- b:5,4- b “] difurans和苯并[1,2- b:4,5- b ”]由二difurans(烯丙氧基)双(炔基)苯或据报道,利用钯催化的双环双(炔基)二羟基苯和烯丙基卤化物。通过进一步进行双闭环复分解反应,还制备了五环化合物。