Stereoselective Epoxidations and Electrophilic Additions to Partial Ergot Alkaloids and Conformationally-Fixed Styrenes. Experimental and Theoretical Modeling Evidence for the Importance of Torsional Steering as a Stereocontrol Element
作者:Michael J. Martinelli、Barry C. Peterson、Vien V. Khau、Darrell R. Hutchison、M. Robert Leanna、James E. Audia、James J. Droste、Yun-Dong Wu、K. N. Houk
DOI:10.1021/jo00087a042
日期:1994.4
Partial ergot alkaloid substrates and related conformationally-fixed styrenes undergo epoxidation, osmium tetraoxide dihydroxylation, and hydrobromination with a level of stereoselectivity which cannot be explained by steric control but is consistent with electrophilic attack to minimize torsional strain. Force-field modeling is consistent with the importance of torsional steering as the dominant stereochemical control element.
LEANNA, M. ROBERT;MARTINELLI, MICHAEL J.;VARIE, DAVID L.;KRESS, THOMAS J., TETRAHEDRON LETT., 30,(1989) N0, C. 3935-3938
作者:LEANNA, M. ROBERT、MARTINELLI, MICHAEL J.、VARIE, DAVID L.、KRESS, THOMAS J.