Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 42, Pages 13200-13203Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201607828
Keywords
allylic compounds; enantioselectivity; nucleophilic addition; organocatalysis; silanes
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Funding
- Max Planck Society
- Deutsche Forschungsgemeinschaft
- European Research Council (Advanced Grant High Performance Lewis Acid Organocatalysis, HIPOCAT)
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The enantioselective allylation of aldehydes to form homoallylic alcohols is one of the most frequently used carbon-carbon bond-forming reaction in chemical synthesis and, for several decades, has been a testing ground for new asymmetric methodology. However, a general and highly enantioselective catalytic addition of the inexpensive, nontoxic, air-and moisture-stable allyltrimethylsilane to aldehydes, the Hosomi-Sakurai([1]) reaction, has remained elusive.([2, 3]) Reported herein is the design and synthesis of a highly acidic imidodiphosphorimidate motif (IDPi), which enables this transformation, thus converting various aldehydes with aromatic and aliphatic groups at catalyst loadings ranging from 0.05 to 2.0 mol% with excellent enantioselectivities. Our rationally constructed catalysts feature a highly tunable active site, and selectively process small substrates, thus promising utility in various other challenging chemical reactions.
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