Effect of <i>M</i><i>eso-</i>Substituents on the Osmium Tetraoxide Reaction and Pinacol−Pinacolone Rearrangement of the Corresponding <i>v</i><i>ic</i>-Dihydroxyporphyrins
作者:Yihui Chen、Craig J. Medforth、Kevin M. Smith、James Alderfer、Thomas J. Dougherty、Ravindra K. Pandey
DOI:10.1021/jo0100143
日期:2001.6.1
exclusively. These results indicate that it is not possible to predict the reactivity of meso-substituted porphyrins in the osmium tetraoxide reaction nor the general substituent migratoryaptitudes in the pinacol-pinacolone rearrangement based on simple electronic arguments, most likely because many parameters (e.g., meso-beta-pyrrolic steric crowding and long-range electronic effects) ultimately determine