作者:Ken Kokubo、Kenji Matsumasa、Masahiro Miura、Masakatsu Nomura
DOI:10.1021/jo960915p
日期:1996.1.1
involve chlororhodation to the alkynes by the intermediary arylchlororhodium(III) species generated in situ followed by reductive elimination of the products, which are suggested by the results of some control experiments. In contrast to the reaction with terminal alkynes, that with some internal ones proceeds without decarbonylation to produce 2,3-disubstituted-1-indenones as the predominant products.
在催化量的[RhCl(cod)](2)和PPh(3)的存在下,芳酰氯与末端炔烃反应并伴随脱羰作用,从而以良好的产率选择性和立体选择性地生成相应的氯乙烯衍生物。催化剂效率是PPh(3)与铑种类之比的显着函数。通过使用1.0的PPh(3)/ Rh比可获得令人满意的结果。该反应可能涉及通过现场生成的中间芳基氯铑(III)物种进行氯铑酰化成炔基,然后通过还原消除产物,这是一些对照实验的结果表明。与与末端炔烃的反应相反,在不脱羰的情况下进行一些内部炔烃反应,生成2,3-二取代-1-茚满作为主要产物。