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Crafty catalysts: Friedel–Crafts alkylation of indoles with nitroalkenes proceeded in the presence of phosphoric acid 1 and 3 Å molecular sieves to give Friedel–Crafts adducts with excellent enantioselectivities (see scheme). Supporting information for this article is available on the WWW under http: //www. wiley-vch. de/contents/jc₂002/2008/z800770ₛ. pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Itoh et al. (Wed,) studied this question.
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