Abstract
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 organocatalysis. TBS=tert-butyldimethylsilyl. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Kniep, F., Jungbauer, S. H., Zhang, Q., Walter, S. M., Schindler, S., Schnapperelle, I., … Huber, S. M. (2013). Organocatalysis by neutral multidentate halogen-bond donors. Angewandte Chemie - International Edition, 52(27), 7028–7032. https://doi.org/10.1002/anie.201301351
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