Insights into the Molecular Structure and Reactivity of α,ω-Dialkoxy-Substituted Ethyne and Butadiyne
作者:Rolf Gleiter、Daniel B. Werz、Frank Rominger、Evgeny Zhutov、Nikolay S. Zefirov、Marina V. Proskurnina
DOI:10.1002/ejoc.200700617
日期:2007.12
photoelectron spectrum of bis(tert-butoxy)butadiyne (4a) are reported. Bis(tert-butoxy)ethyne (3a) and 4a were treated with highly electrophilic [η2-bis(tert-butylsulfonyl)ethyne](carbonyl)(η5-cyclopentadienyl)cobalt (10). In both cases a CpCo-stabilized cyclobutadiene ring resulted substituted by two tert-butylsulfonyl groups and either two tert-butoxy groups (11) or one tert-butoxy group and one tert-butoxyethynyl
报告了通过 X 射线晶体学和双(叔丁氧基)丁二炔 (4a) 的 He(I) 光电子光谱得出的分子结构。双(叔丁氧基)乙炔(3a)和4a用高度亲电子的[η2-双(叔丁基磺酰基)乙炔](羰基)(η5-环戊二烯基)钴(10)处理。在这两种情况下,CpCo 稳定的环丁二烯环都被两个叔丁基磺酰基和两个叔丁氧基 (11) 或一个叔丁氧基和一个叔丁氧基乙炔基 (12) 取代。报告了 11 和(η4-四(叔丁氧基)环戊二烯酮)(环戊二烯基)钴 (15) 的结构数据,并与相关物种进行了比较。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)