A catalytic enantiotopic-group-selective Suzuki reaction for the construction of chiral organoboronates
- PMID: 24564423
- PMCID: PMC4021567
- DOI: 10.1021/ja500029w
A catalytic enantiotopic-group-selective Suzuki reaction for the construction of chiral organoboronates
Abstract
Catalytic enantiotopic-group-selective cross-couplings of achiral geminal bis(pinacolboronates) provide a route for the construction of nonracemic chiral organoboronates. In the presence of a chiral monodentate taddol-derived phosphoramidite ligand, these reactions occur with high levels of asymmetric induction. Mechanistic experiments with chiral (10)B-enriched geminal bis(boronates) suggest that the reaction occurs by a stereochemistry-determining transmetalation that occurs with inversion of configuration at carbon.
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References
-
- Hall D. G.Boronic Acids, 2nd ed.; Wiley-VCH: Weinheim, 2011.
-
-
For a review of Rh-catalyzed asymmetric hydroboration, see:
- Carroll A.-M.; O’Sullivan T. P.; Guiry P. J. Adv. Synth. Catal. 2005, 347, 609.
-
For recent examples, see:
- Lee Y.; Hoveyda A. H. J. Am. Chem. Soc. 2009, 131, 3160. - PMC - PubMed
- Noh D.; Chea H.; Ju J.; Yun J. Angew. Chem., Int. Ed. 2009, 48, 6062. - PubMed
- Smith S. M.; Takacs J. M. J. Am. Chem. Soc. 2010, 132, 1740. - PMC - PubMed
- Corberán R.; Mszar N. W.; Hoveyda A. H. Angew. Chem., Int. Ed. 2011, 50, 7079. - PubMed
- Smith S. M.; Hoang G. L.; Pal R.; Khaled M. O. B.; Pelter L. S.; Zeng X. C.; Takacs J. M. Chem. Commun. 2012, 48, 12180. - PMC - PubMed
-
-
- For a review of catalytic enantioselective conjugate borylation, see:Calow A. D. J.; Whiting A. Org. Biomol. Chem. 2012, 10, 5485. - PubMed
-
- Ito H.; Ito S.; Sasaki Y.; Matsuura K.; Sawamura M. J. Am. Chem. Soc. 2007, 129, 14856. - PubMed
- Guzman-Martinez A.; Hoveyda A. H. J. Am. Chem. Soc. 2010, 132, 10634. - PMC - PubMed
- Ito H.; Kunii S.; Sawamura M. Nat. Chem. 2010, 2, 972. - PubMed
- Park J. K.; Lackey H. H.; Ondrusek B. A.; McQuade D. T. J. Am. Chem. Soc. 2011, 133, 2410. - PubMed