Synthesis of seven-membered cyclic allenes, 1-zirconacyclohepta-2,3,6-trienes, from alkynes and 1-en-3-ynes
作者:Noriyuki Suzuki、Takashi Tsuchiya、Yoshiro Masuyama
DOI:10.1016/j.jorganchem.2013.05.023
日期:2013.10
Seven-membered metallacyclic allene compounds, 1-zirconacyclohepta-2,3,6-trienes, were synthesized by intermolecular coupling between alkynes and 1-en-3-ynes on a zirconium atom. X-ray diffraction studies and NMR spectroscopic observation indicated their seven-membered structures, although the contribution from 2-alkynyl-1-zirconacyclopent-4-ene might be considered. Benzyne, an unstable alkyne, also
通过在锆原子上炔烃和1-en-3-炔烃之间的分子间偶联,合成了七元金属环烯丙基化合物1-锆碳环庚七-2,3,6-三烯。X射线衍射研究和NMR光谱观察表明它们具有七元结构,尽管可以考虑2-炔基-1-氧化锆环戊-4-烯的贡献。苯炔(一种不稳定的炔烃)还与锆和钛上的1-en-3-ynes偶联。