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Published October 14, 2009 | Accepted Version + Supplemental Material
Journal Article Open

Asymmetric Carbon−Carbon Bond Formation γ to a Carbonyl Group: Phosphine-Catalyzed Addition of Nitromethane to Allenes

Abstract

A chiral phosphine catalyzes the addition of a carbon nucleophile to the γ position of an electron-poor allene (amide-, ester-, or phosphonate-substituted), in preference to isomerization to a 1,3-diene, in good ee and yield. This strategy provides an attractive method for the catalytic asymmetric γ functionalization of carbonyl (and related) compounds.

Additional Information

© 2009 American Chemical Society. Received August 4, 2009. Support has been provided by the National Institutes of Health (National Institute of General Medical Sciences, Grant R01-GM57034), Merck Research Laboratories, and Novartis. We thank Dr. Nicolas Marion for assistance, Evonik Degussa for providing samples of phosphepines 1−4, and Prof. Qi-Lin Zhou for providing a precursor to phosphine 5. Funding for the MIT Department of Chemistry Instrumentation Facility has been furnished in part by NIH IS10RR13886 and NSF DBI-9729592.

Attached Files

Accepted Version - nihms147483.pdf

Supplemental Material - ja9061823_si_001.pdf

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Additional details

Created:
August 21, 2023
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October 20, 2023