Electrocyclic ring closure of [2.2.6]paracyclophanepentaene. Structure and dynamic stereochemistry of the product
作者:David Tanner、Olof Wennerström、Thomas Olsson
DOI:10.1016/s0040-4039(00)87881-8
日期:——
The structure and dynamic stereochemistry of a novel paracyclophane formed by electrocyclicringclosure of a hexatriene-bridged precursor are described.
描述了一种新的对环烷的结构和动态立体化学,该对环烷由己三烯桥连的前体通过电环闭合而形成。
The newly modified McMurry reaction toward the improved synthesis of cyclic paraphenylacetylenes
作者:Takeshi Kawase、Noriko Ueda、Kenji Tanaka、Yohko Seirai、Masaji Oda
DOI:10.1016/s0040-4039(01)00862-0
日期:2001.8
low-valent titanium generated in a mixed solvent of DME and toluene favored reductive cyclo-oligomerization to give macrocyclic cyclophanepolyenes in relatively good yields leading to improved or new synthesis of a series of cyclic paraphenylacetylenes ([6] to [9]CPPAs).