Novel Synthetic Route to Octasubstituted Naphthalenes from Four Alkynes and One Olefin Unit via Zirconacyclopentadienes and 1,2-Diiodo-3,4,5,6-tetraalkylbenzene
作者:Xin Zhou、Zhiping Li、Hui Wang、Masanori Kitamura、Ken-ichiro Kanno、Kiyohiko Nakajima、Tamotsu Takahashi
DOI:10.1021/jo0497297
日期:2004.6.1
amount of sulfuric acid. Reaction of the 1,2-diiodo-3,4,5,6-tetraalkylbenzenes with zirconacyclopentadienes in the presence of a stoichiometric amount of CuCl gave sterically crowded octasubstituted naphthalenes in moderate yields.
在NiCl 2(PPh 3)2存在下,通过氧化锆环戊二烯与乙烯基溴的反应制备1,2,3,4-四取代苯衍生物。通过在催化量的硫酸存在下用碘和高碘酸处理1,2,3,4-四烷基苯形成1,2-二碘-3,4,5,6-四烷基苯。在化学计量的CuCl存在下,1,2-二碘-3,4,5,6-四烷基苯与氧化锆环戊二烯的反应以中等收率得到空间拥挤的八取代萘。