作者:Florian Kniep、Stefan H. Jungbauer、Qi Zhang、Sebastian M. Walter、Severin Schindler、Ingo Schnapperelle、Eberhardt Herdtweck、Stefan M. Huber
DOI:10.1002/anie.201301351
日期:2013.7.1
I(n)organocatalysis: Neutral multidentate halogen‐bond donors (halogen‐based Lewis acids) catalyze the reaction of 1‐chloroisochroman with ketene silyl acetals. The organocatalytic activity is linked to the presence (and number as well as orientation) of iodine substituents. As hidden acid catalysis can be ruled out with high probability, this case constitutes strong evidence for halogen‐bond based
I(n)有机催化:中性多齿卤素键供体(基于卤素的路易斯酸)催化1-氯异色满与乙烯酮甲硅烷基缩醛的反应。有机催化活性与碘取代基的存在(以及数量和方向)有关。由于可以高效率地排除隐藏的酸催化作用,因此这种情况为基于卤素键的有机催化提供了有力的证据。TBS =叔丁基二甲基甲硅烷基。