Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 22, Issue 41, Pages 14618-14624Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201602719
Keywords
allylboron; borenium; borocation; carboboration; main group
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Funding
- EPSRC [EP/N02320X/1]
- Fonds der Chemischen Industrie
- EPSRC [EP/N02320X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/N02320X/1] Funding Source: researchfish
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A diverse range of Lewis acidic alkyl, vinyl and aryl boranes and borenium compounds that are capable of new carbon-carbon bond formation through selective migratory group transfer have been synthesised. Utilising a series of heteroleptic boranes [PhB(C6F5)(2) (1), PhCH2CH2B(C6F5)(2) (2), and E-B(C6F5)(2)(C6F5)C=C(I)R (R=Ph 3a, nBu 3b)] and borenium cations [phenylquinolatoborenium cation ([QOBPh][AlCl4], 4)], it has been shown that these boron-based compounds are capable of producing novel allyl- boron and boronium compounds through complex rearrangement reactions with various propargyl esters and carbamates. These reactions yield highly functionalised, synthetically useful boron substituted organic compounds with substantial molecular complexity in a one-pot reaction.
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