Challenge To Detect 1,4-Zwitterions Spectroscopically in a Ketene−Alkene Reaction
作者:Takahisa Machiguchi、Junko Okamoto、Yumiko Morita、Toshio Hasegawa、Shinichi Yamabe、Tsutomu Minato
DOI:10.1021/ja054619i
日期:2006.1.1
generated in a ketene-alkene reaction is reported. Also, a striking result of the intervention of an unprecedented "1,4-zwitterion neutral dimer" is presented in a new mechanistic pathway; the ketene-alkene reaction gives the product cyclobutanone from the initial cycloadduct alpha-methyleneoxetane.
报告了在乙烯酮-烯烃反应中产生的瞬态物种 1,4-两性离子的直接光谱检测的第一个例子。此外,前所未有的“1,4-两性离子中性二聚体”干预的惊人结果以新的机制途径呈现;烯酮-烯烃反应从最初的环加合物α-亚甲基氧杂环丁烷中得到产物环丁酮。